OPERATING MANUAL 8.1/9

Adult

Pediatric

Neonate

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Servo Ventilator 300 A

CRITICAL CARE

© MAQUET Critical Care AB, Electromedical Systems Division,1996-2000. All rights reserved. No part of thispublication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the copyrightowner i writing. Subject to alterations without prior notice.Issued by MAQUET Critical Care AB, SE-171 95 SOLNA, Sweden.

Printed in Sweden.Price: Group 6.0109 1.55th English edition,June 2000.

Servo Ventilator 300/300A – Operating Manual 8.1/9.1Art.-Nr. 64 08 004 E313E

SE

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O V

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300/300A O

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.1/9

.1

SERVO VENTILATOR 300/300A

OPERATING MANUAL 8.1/9.1

NotesImportantImportantImportantImportantImportant

The Servo Ventilator 300/300A is not designed to withstand severenegative pressures. If a negative suction pressure exceeding 100 cmH2O (-100 cm H2O) is applied to the system, the pressure transducersmay be damaged causing the system to become inoperable.Observe the following for the Servo Ventilator 300/300A.When using closed system suctioning:• If the suctioning flow is higher than that which is delivered by the

ventilator, a negaitve pressure may be generated which will beapplied to the lung and the ventilator breathing system.

• Do not use the Stand by position, Inspiratory pause hold, orExpiratory pause hold during the closed suctioning procedure.

Function test for ”Insp. time %”and ”PEEP” potentiometers

Insp. time %• Set ”Insp. tid %” to 80 %.

• Turn the knob slowly counter-clockwise to10% simultaneously watch the reading onthe display ”Insp.period s” . The readingmust decrease evenly, digit by digit,without any sudden jumps (up or down).

• Set ”Insp. time %” back to 25 %.

PEEP• Set ”PEEP” to 50 cm H2O.

• Turn the knob slowly counter-clockwise to0 cm H2O. Simultaneously watch the twodiodes showing preset PEEP as well asthe two diodes showing actual pressureon the ”Airway pressure” bargraph. Thevalues indicated must follow each otherevenly, decreasing step by step, withoutany sudden jumps (up or down).

Insp. time %

PEEP

Insp. period s

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Servo Ventilator 300 A-20

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499

498

9 . 9

40

l/min

Adult

Pediatric

Neonate

Airway press.cm H2O

Upper press. limit

Peak

Mean

Mians

Pressure ControlLevel above PEEP

Measured freq.b/min

CMV freq. b/min

Set freq.b/min

Stand by

Ventilator offBattery charging

Pause

End. Exp.

Insp. period s

Insp. flow l/s

Insp. time %

Pressure SupportLevel above PEEP Pause time %

PEEP

Trig. sensitivityLevel below PEEP

Insp. rise time %

SIMV freq. b/minAlarm limitsNeonate 1/10

Upper alarm limit

Lower alarm limit

Exp. minute vol.l/min

Reset

2 min

Insp.

Exp.

Volume

Pause hold

Oxygen breaths

Start breath

Oxygen breath running

O2 conc. %

Alarms and messages

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

SIMV (Vol. Contr.)+ Pressure Support

SIMV (Press. Contr.)+ Pressure Support

Volume Support

Pressure SupportCPAP

Optional

VolumeTidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml

3000225E

Press. Reg. Vol.Control/Support

VolumeControl/Support

PressureControl/Support

On

Off

Support

Automode

Log sheetLog sheet

Cleaning

Autoclaving

Exchange parts

Date andsignature

Date andsignature

Cleaning

Autoclaving

Exchange parts

Date andsignature

Exchange parts

Date andsignature

Exchange parts

Date andsignature

Date andsignature

Leakage test

Upper pressure limit alarm

Minute volume alarms

Apnea alarm

O2 alarm

Gas supply system

Battery operation

Automode

Date andsignature

Leakage test

Pressure levels

Trigger function

Upper pressure limit alarm

Tidal and minute volumes

Minute volume alarms

Check of neonate range

Check tubings alarm

Apnea alarm

Safety valve

O2 alarm

Gas supply system

Battery operation

Automode

Date andsignature

Important

Connection

• A pre-use check must always be donebefore connecting the ventilator to apatient.

• When connected to a patient, theventilator must never be left unattended.

• Accessories and auxiliary equipment mustnot be connected or disconnected duringoperation or when the ventilator isconnected to mains. Such connection ordisconnection may interfere with thefunctioning of the ventilator.

• All gases must fulfill the specifications formedical grade gas. The gases suppliedmust be free from water, oil and particles.Air ....................................... H2O < 5 mg/m3

Oil < 0.5 mg/m3

Oxygen ............................. H2O < 20 mg/m3

Operation

• To protect the patient against high airwaypressures, the “Upper press. limit” mustalways be set according to the operatinginstructions so as to provide adequatepatient safety.

• The “Upper alarm limit” and “Loweralarm limit” for minute volume mustalways be set according to the operatinginstructions so as to provide adequatepatient safety.

• If a Bi-Phasic Ventilation Module forSV 300 is connected to a Servo Ventilator300A the “Automode” must be turnedoff.

• The “Automode” must be turned off iftwo SV 300A are connected with asynchronization cable for Master-Slaveapplication.

• During operation the water traps must bechecked regularly and if necessaryemptied.

General information

• The symbol on the unit means:Attention, consult accompanyingdocuments.

• The information in this Operating Manualis valid for Servo Ventilator 300 8.1 andServo Ventilator 300/300A 9.1 unlessstated otherwise.

• The Servo Ventilator 300/300A must beoperated only by authorized personnelwho are well trained in its use. It must beoperated according to the instructions inthis Operating Manual.

• The Servo Ventilator 300 can havedifferent software versions lower than 8.0with corresponding versions of theOperating Manual. Before use, make surethe information on the label on the controlunit corresponds to the version numberon the Operating Manual.

• After unpacking, perform a function checkand, if necessary, a calibration.

• All data on pressures for Servo Ventilator300/300A are given in cm H2O.1 kPa (kilopascal N10 cm H2O100 kPa = 1 bar N 1 atm N1 kgf/cm2 (kp/cm2)100 kPa N15 psi

• Responsibility for the safe functioning ofthe equipment reverts to the owner oruser in all cases in which service or repairhas been done by a non-professional or bypersons who are not employed by orauthorized by MAQUET, and when theequipment is used for other than itsintended purpose.

• Documentation for the Servo Ventilator300/300A consists of:– Operating Manual– Service Manual– Spare Parts Catalogue– Circuit Diagram

Important

• The device complies with therequirements of the Medical Device

Directive 93/42/EEC.

• Regarding electromagnetic compatibilityit is the responsibility of the user to takenecessary measures in order to ascertainthat the specified limits are not exceededas this may impair the safety of theventilator.

Such measures should include, but arenot limited to:

– Normal precautions with regard torelative humidity and conductivecharacteristics of clothing in order tominimize the build-up of electrostaticcharges.

– avoiding the use of radio emittingdevices in close proximity to theventilator, such as high-frequencysurgery apparatus or cordless (mobile)telephones, resulting in a field levelexceeding 3 V/m (IEC 601-1-2)

• Magnetic fields of MR equipment havingflux densities above 20 mT may causedeactivation of the ventilator functionsand may result in permanent damage tothe Servo Ventilator.

• The apnea alarm is not intended to andwill not monitor for disconnections.

• The apnea alarm is not functional in themodes “Volume Control/Support”,“Pressure Control/Support”, or “PressureReg. Volume Control/Support”.

• As an extra safety a resuscitator mustalways be readily accessible.

• This lung ventilator is not intended to beused with any anesthetic agents.

• Antistatic or electrically conductivebreathing tubes should not be used withthis lung ventilator.

Service

• The Servo Ventilator 300/300A must beserviced at regular intervals by speciallytrained personnel. Any maintenance mustbe noted in a log book provided for thatpurpose in accordance with nationalregulations. We recommend that serviceis done as a part of a service contract withMAQUET.

• A 1000 hour overhaul must be performedafter 1000 hours of operation or, at thelatest, every six months. In addition, theventilator shall undergo a technical safetycheck (Function check) twice a year, at sixmonth intervals or according to nationalregulations.

• A 3000 hour overhaul must be performedafter every 3000 hours of operation or, atthe latest, once every year.

• The internal battery shall be replacedevery 3 years according to instructions inthe Service Manual. The batteries can onlybe guaranteed if they are used only as aback-up at mains failure approx. 30 min.

• Service and repair of the ventilator may bedone only by MAQUET-authorizedpersonnel.

• Only original parts from MAQUET must beused in the ventilator.

• Old non-functioning batteriesand O2 cells must be returned to the

place of purchase or to a placewhere they can be disposed of

properly. Batteries and O2 cells must notbe disposed of with ordinary waste.

0413

Important

Cleaning

• The ventilator must not be gas sterilized.

• The flow transducer must not be cleanedin a dish washing machine, by ultrasonicmethods or by using agents that containaldehydes.

• Agents used for cleaning must have a pHbetween 4 – 8.5.

• Complete cleaning should be done afterevery 3000 hours of operation or, at thelatest, once every year according to chapter3000 hour overhaul with completecleaning.

Accessories and auxiliary equipment

• Only accessories, supplies or auxiliaryequipment (“Products and accessories”catalogs 64 74 725 E323E, 64 74 717E323E and “Spare and exchange parts”catalog 90 34 570 E323E including"Supplement for Spare Parts" 64 08 822E404E) should be connected to or used inconjunction with the ventilator.Warning: Use of accessories and auxiliaryequipment other than those specified inthe documents mentioned above mayresult in degraded performance and safetyof the ventilator.

• If a Bi-Phasic Ventilation Module for SV 300is connected to a Servo Ventilator 300A the“Automode” must be turned off.

• Values measured at the signal outputs ofthe Servo Ventilator 300/300A and whichhave been processed in auxiliaryequipment must not be used as asubstitute for therapeutic or diagnosticdecisions. Such decisions can be madeonly by staff with medical expertise,according to established and acceptedpractice. If auxiliary equipment that has notbeen manufactured by MAQUET is used,MAQUET denies all responsibility for theaccuracy of signal processing.

• If there should be any deviation betweeninformation shown on the front panel of theventilator and that shown by the auxiliaryequipment, the ventilatory parameters shownon the front panel shall be considered theprimary source for information. It is theresponsibility of the user to ensure that anyaccessories, supplies and auxiliary equipmentare compatible with the ventilator and thattheir use does not affect the normalfunctionality of the ventilator. In case ofdoubt, contact a MAQUET representative.Accessories, supplies and auxiliaryequipment that are not compatible withServo Ventilator 300/300A may interfere withthe functioning of the ventilator.

• If a front panel cover is used, do not attachanything (e.g. stickers) on the cover. Vitalinformation can then be hidden impairingpatient safety.

1

List of contents

General description...................................................

Control Panel ............................................................

Ventilation modes .....................................................

Patient safety............................................................

Set-ups and connection to patient ............................

Pre-use check ...........................................................

Troubleshooting ........................................................

Quick exchange of expiratory channel ......................

Routine cleaning .......................................................

1000 hour overhaul ...................................................

3000 hour overhaul with complete cleaning .............

Exchange of O2 cell ..................................................

Calibration.................................................................

Function check .........................................................

1

ContentsSystem SV 300 .......................................... 2

Servo Ventilator 300/SV 300A .................. 3

Control unit

General ................................................... 4

Sounds................................................... 5

Lights ..................................................... 5

Displays ................................................. 7

Knobs .................................................... 7

Touchpads ............................................. 9

Set Parameter Guide ............................ 10

Conversion tables for flow

and volume .......................................... 13

Patient unit

General ................................................. 15

Gas modules ....................................... 15

Gas flow through the patient unit ......... 16

Technical specifications ......................... 18

Labels .................................................. 22

Connectors .......................................... 23

General description

2

The Servo Ventilator 300/300A is the mainpart of the System SV 300, a versatilesystem for the critically ill patient.

This system offers a wide range of productsand accessories, e.g., carts, breathingsystems, compressors, external powersupply, humidifiers, a screen for graphicalpresentation of curves and loops, nebulizationand CO

2 measurements.

For additional information aboutaccessories, contact your MAQUETrepresentative or see our catalog “Productsand accessories”.

To help you use the System SV 300 to itsfullest potential a comprehensive series ofeducational materials is available. Thisincludes a set of Pocket Guides coveringclinical as well as technical aspects, aclinical workbook including cases, severalvideo programs and scientific publications.

The educational materials are constantlybeing improved and extended. For moreinformation contact your MAQUETrepresentative.

System SV 300

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3000208E

Control Unit

Patient Unit


Stand by




SIMV (Vol. Contr.)+ Pressure


Volume Support

Optional


Oxygen breaths

Start breath


On

Off

Support

Automode

Airway press.cm H2O

Upper press. limit

Peak

Mean


Measured freq.b/min

CMV freq. b/min

Set freq.b/min

Pause

End. Exp.

Insp. period s

Insp. flow l/s

Insp. time %

Pressure SupportLevel above PEEP

Alarms and messages

Alarm limitsNeonate 1/10

Upper alarm limit


VolumeTidalvol.

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml

Pause time %

PEEP


Insp. rise time %

SIMV freq. b/min

Volume

Lower alarm limit

Insp.

Exp.

Pause hold

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

Reset

2 min

Mains

O2 conc. %

Adult

Pediatric

Neonate

Resp. pattern

Pressure Reg.Volume Control

Stand by


Volume Control

Pressure Control



Volume Support

Optional


Oxygen breaths

Start breath

Oxygen breath runningAirway press.cm H2O

Upper press. limit

Peak

Mean


Measured freq.b/min

CMV freq. b/min

Set freq.b/min

Pause

End. Exp.

Insp. period s

Insp. flow l/s

Insp. time %


Alarms and messages


Upper alarm limit


VolumeTidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml

Pause time %

PEEP


Insp. rise time %

SIMV freq. b/min

Volume

Lower alarm limit

Insp.

Exp.

Pause hold

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

Reset

2 min

Mains

O2 conc. %

Adult

Pediatric

Neonate

Resp. pattern

Servo Ventilator 300/SV 300A

Servo Ventilator 300AThe Servo Ventilator 300A is a lungventilator intended for adult, pediatric andneonatal patients.

The ventilator has two main units:

• Control unit.

• Patient unit.

The control unit and the patient unit areconnected with a 2.9 meter long cable, thusmaking possible innumerable functionalarrangements.

Servo Ventilator 300The Servo Ventilator 300 is essentially thesame as the Servo Ventilator 300A butwithout the “Automode” function.

4

General description – Control unit

GeneralThe control unit contains the electroniccircuits necessary for control of ventilation.

Settings are made using different knobs onthe control panel. Information about thesettings as well as the patient’s breathing isshown on a number of displays andbargraphs. Touchpads are used to obtainadditional information.

Use of the panel settings and displays isdescribed in the chapter Control panel.

Information necessary for the regulatingsystems is sent to the patient unit.

The control unit is fragile and must behandled carefully.

!

Servo Ventilator 300A-20

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40

l/min

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Pediatric

Neonate

Airway press.cm H2O

Upper press. limit

Peak

Mean

Mains


Measured freq.b/min

CMV freq. b/min

Set freq.b/min

Stand by


Pause

End. Exp.

Insp. period s

Insp. flow l/s

Insp. time %

Pressure SupportLevel above PEEP Pause time %

PEEP


Insp. rise time %

SIMV freq. b/minAlarm limitsNeonate 1/10

Upper alarm limit

Lower alarm limit


Reset

2 min

Insp.

Exp.

Volume

Pause hold

Oxygen breaths

Start breath


O2 conc. %

Alarms and messages

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical



Volume Support


Optional

VolumeTidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml

3000225E




On

Off

Support

Automode

5

Green light

The green light “Mains” is lit when theventilator is connected to mains.

SoundsThere are two different audible signals fromthe ventilator:

• Alarm. A signal with increasing volume.

• Caution signal. A clicking sound.

In this Operating Manual the symbols shownto the left are used for the different signals.

General description – Control unit30

0-F

64E

Alarm Caution sound

LightsLights can be green, yellow or red and eithersteady or flashing.

In this Operating Manual the symbols to theleft are used.

Flashing light Steady light300-

F63

E

3000340E

Mains

Alarm Caution sound

6

A steady yellow light in the “Alarms andmessages” section indicates:

• that a previous high priority alarm conditionhas been corrected, and that the conditionhas been stored in memory.

• that certain alarm limits have beenoverridden and the alarm has been turnedoff manually. (May be accompanied by acaution signal).

(For details see chapter Patient safety).


Yellow light

The yellow lights can be steady or flashingdepending on the situation.

A steady yellow light at a knob is anindication that the knob is active.

When using the Set Parameter Guide (SPG),the lights can be steady or flashing.

The SPG is described in detail on pp 10–12.

Red light

A red flashing light indicates an alarmcondition which requires immediate action.

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Upper press. limit

XXXXXXXXXAlarms and messages

AirwayPressure

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Exp. minutevolume

Apnea

Gas supply

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Technical

3000

235E

7

DisplaysDisplays with green digits show set orcalculated values.

Displays with red digits show measuredvalues.

Knob typesRed

Functions with red knobs are very importantfor patient safety. They include:

– “Upper press. limit” for airway pressure.

– “Upper alarm limit” and “Lower alarmlimit” for expired minute volume.

With red tops

The following knobs have red tops as well asred marked areas showing that settingsshould be chosen with caution since theymay involve certain risks for the patient.

–“Pressure Control Level above PEEP”.

–“Pressure Support Level above PEEP”.

–“PEEP”.

With green markings

The green markings shall be seen aspreliminary settings. The final settings mustbe made to suit each patient´s individualneeds.


3000236X

3000237X

8

To pass a safety catch:

• Turn the knob to a black marking.

• Press the center of the knob to pass thesafety catch.


With safety catches

For safety reasons the following knobs havesafety catches:

• “Upper press. limit”.

• “Pressure Control Level above PEEP”.

• “Pressure Support Level above PEEP”.

• “PEEP”.

• “Insp. time %”.

• “Pause time %”.

• “Insp. rise time %”.

• “O2 conc. %”.

3000238X

Spring-loaded

The following knobs will automatically goback to their middle, neutral position whenreleased:

• “Oxygen breaths”/ “Start breath”.

• “Reset”/“2 min”.

• “Pause hold”.

3000239X

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110120

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I34X

9

TouchpadsThe touchpads are used:

• for reading of alarm messages stored in thememory. See chapter Patient safety.

• for the Set Parameter Guide (SPG). Seenext page.

• for alternative information on the respiratorypattern displays. See chapter Control panel.

• during the calibration procedure. Seechapter Calibration.

Touch one or two touchpads depending onwhat you want to do.


3000240X

10

Set Parameter GuideThe Set Parameter Guide (SPG) is anelectronic aid to help the user make allsettings in a fast and safe way. Yellow lightsand an audible signal indicate which knobsare active in the different modes.

Note! The “Automode” control on theSV 300A is not included in the SPG.

3000

242E

Volume Control


Setting an active mode using SPG.

• Set mode selector to the selected mode.Yellow lights will now show all activeknobs. This example shows “VolumeControl” mode.

• Touch the “Volume Control” touchpad. Theyellow light at “Volume Control” will startflashing.

• The light at the first knob to be set (alwaysthe patient range selector) will now beflashing. The lights at all other knobs willbe dark.

• Set the patient range.

• Touch the touchpad at “Volume Control”again to continue to the next setting.Repeat until all active knobs have beenset. The yellow lights at all active knobswill then be lit and three audible signals willbe heard.


Volume Control

3000

241E Volume

Control/Support

11

Investigating an inactive mode using SPG

When using a selected mode of ventilation,it is possible to see which knobs would beactive in another mode.

This example shows which knobs would beset in “Pressure Control” while using“Volume Control”.

• Set to “Volume Control”.

• Touch the “Pressure Control” touchpad.The light at “Pressure Control” will startflashing.

At the first activation of the touchpad, alllights at the knobs active in “PressureControl” will be lit and the lights at theknobs unique for “Volume Control” willbe dark.

At the next activation, all lights whichwould be active in “Pressure Control” arelit.

The difference is that the yellow lights atthe knobs common for both modes willbe flashing at a higher frequency.

The lights for the knobs unique to theinactive mode (“Pressure Control”) willbe flashing at the normal frequency.


Volume Control

3000

243E

Pressure Control

Volume Control/Support

Pressure Control/Support

12

Stand by mode using SPG

In the “Stand by” mode it is possible to seethe knobs which would be active in anymode.

• Touch the touchpad for the desired modeand follow the procedure described for theactive mode (page 10).

Note! Only the display or bargraph for theparameter to be set will be lit, one at atime.

Cancelling of SPG

To cancel the SPG without completing the fullsequence:

• Touch the touchpad at “Stand by”.

The SPG will also be cancelled if no touchpadhas been activated within 1 minute of theprevious activation.

General description – Control unit30

0-I4

3E

Stand by

3000

244E

Pressure Control

Stand by


13


Conversion of flow and volume to get reference to ambientpressure

In the SV 300/300A flow measurements andall preset and indicated volumes (as well asall flow or volume output signal values onconnectors N 77, N 78, N 81, N 82, N 83 andN 84) are referenced to standard pressure(1013 mbar, 760 mm Hg).If any flow or volume is to be referenced toambient pressure:

1. Read the actual barometric pressure.See Use of touchpads in chapterCalibration.

2. Use the table on the next page to findthe closest conversion factor for theread value.

To convert ventilator settings

To set a volume referenced to ambientpressure:

• Multiply the intended value by theconversion factor for ventilator settings.

To convert ventilator readings

To get a read value referenced to ambientpressure:

• Multiply the read value by the conversionfactor for ventilator readings.

See table and examples on next page.

14

Barometric pressure Conversion factor Conversion factormbar mm Hg for ventilator settings for ventilator readings700 525 0.69 1.45720 540 0.71 1.41740 555 0.73 1.37760 570 0.75 1.33780 585 0.77 1.30800 600 0.79 1.27820 615 0.81 1.24840 630 0.83 1.21860 645 0.85 1.18880 660 0.87 1.15900 675 0.89 1.13920 690 0.91 1.10940 705 0.93 1.08960 720 0.95 1.06980 735 0.97 1.031000 750 0.99 1.011013 760 1.00 1.001020 765 1.01 0.991040 780 1.03 0.971060 795 1.05 0.961080 810 1.07 0.941100 825 1.09 0.92


Examples for a ventilator used at an altitude of 1500 m(4500 feet)

To convert ventilator readings

Actual barometric pressure: 637 mm Hg

Displayed values:

– Insp. flow: 0.33 l/s

– ...tidal volume: 415 ml

– ...minute volume: 8.3 l/min.

• Read the conversion factor for ventilatorreading at 630 mm Hg. The conversionfactor is 1.21.

• Multiply the displayed value by 1.21.

• This gives the following results:

– Insp. flow: 0.33 x 1.21 = 0.40 l/s

– ...tidal volume: 415 x 1.21 = 500 ml

– ...minute volume: 8.3 x 1.21 = 10 l/min.

To convert ventilator settings

Actual barometric pressure: 637 mm Hg

Intended values referenced to ambientpressure:

– Insp. flow: 0.40 l/s

– Tidal volume: 500 ml

– Minute volume: 10 l/min.

• Read the conversion factor for ventilatorsetting at 630 mm Hg. The conversionfactor is 0.83.

• Multiply the intended values by 0.83.

• This gives the following settings:

– Insp. flow: 0.40 x 0.83 = 0.33 l/s

– Tidal volume: 500 x 0.83 = 415 ml

– Minute volume: 10 x 0.83 = 8.3 l/min.

15

General description – Patient unit

GeneralIn the patient unit flow and pressure arecontrolled by a feed-back system.Transducers continually measure the flowand pressures. The information is comparedwith the front panel settings, and a differencebetween the actual and the preset valuesresults in correction signals to the controlvalves.

Gas modulesThe Servo Ventilator 300/300A has two gasmodules, one for air and one for O

2.

The modules have a mechanical pin codingsystem so that they cannot be put in thewrong slot.

The modules shall be connected to a medicalpipeline system, an air compressor or to gastanks with an outlet pressure between 2 and6.5 bar.

Each module has a bacteria filter at the gasinlet to protect the ventilator from particulatematter as well as bacterials coming from thepipeline system.

300-

F67

X

16

Gas flow through the patient unit


12

1

45 3

6

7

10

8

9 11

300-

F71

X

2

17


1. Gas inlet for air. The connected airmust have a pressure between 2 and 6.5bar.

2. Gas inlet for O2. The connected O

2

must have a pressure between 2 and 6.5bar.

3. The gas flow is regulated by the gasmodules.

4. The gases are mixed in the inspiratorymixing part.

5. The pressure of the mixed gas deliveredto the patient is measured by a pressuretransducer. The transducer is protectedby a bacteria filter.

6. The inspiratory pipe leads the mixed gasto the patient system. The inspiratorypipe also contains a safety valve, aholder for an O

2 cell and the inspiratory

outlet.

7. The oxygen concentration is measuredby an O

2 cell. The O

2 cell is protected by

a bacteria filter.

8. The patient system’s expiratory gas tubeis connected at the expiratory inlet. Theexpiratory inlet also contains a moisturetrap.

9. The gas flow through the expiratorychannel is measured by the expiratoryflow transducer. For flow triggering thepatient´s breathing efforts are sensed asa decrease in a continuous expiratoryflow.

10. The expiratory pressure is measured bythe expiratory pressure transducer. Thetransducer is protected by a bacteriafilter. For pressure triggering thepatient´s breathing efforts are sensed bythis pressure transducer.

11. The pressure (PEEP pressure) in thepatient system is regulated by theexpiratory valve.

12. The gas from the patient system leavesthe ventilator via the expiratory outlet. Theoutlet contains a non-return valve.

18

General description –Technical specifications

GeneralDimensions ....................................................... Control unit:

W 431 x D 150 x H 325 mmPatient unit:W 242 x D 370 x H 240 mm

Weight ............................................................... Approx. 24 kg

Classification ...................................................... Class I equipment

according to IEC 601-1/EN 60 601-1

Type B

Patient range ...................................................... Adult/Pediatric/Neonate

Method of triggering ........................................... Flow and pressure

Flow range ......................................................... 0.1 ml/s – 3 l/s

Operating conditionsOperating temperature range .............................. +15 to +35°C (60 to 90°F)

Relative humidity ............................................... 30 to 75%

Atmospheric pressure ........................................ 700 to 1060 hPa

Non-Operating conditionsImpact ................................................................ In accordance with IEC 68-2-29Eb

Peak acceleration: 15 gPulse duration: 6 msNumber of impacts: 1000

Storage temperature range ................................. -25 to +70°C (-13 to 158°F)

In the Servo Ventilator 300/300A flow measurements and all preset and indicated volumesare referenced to standard pressure (1013 mbar, 760 mm Hg).

Gas and power supplyInlet gas pressure ............................................... 2 – 6.5 bar (29 – 94 PSI), air and O

2

Gas delivery system .......................................... Microprocessor controlled valves

Power supply ..................................................... 100, 120, 220 and 240 V AC ±10%,50 – 60 Hz

Battery back-up .................................................. 2 built-in rechargeable 12 V, 1.9 Ah

Battery back-up time .......................................... Approx. 30 min. The batteries can only beguaranteed if they are used only as a back-upat mains failure.

19


Recharge time .................................................... Approx. 10 h

External battery input .......................................... 24 V DC

Power consumption ........................................... A VA W100V/120V 2 190 140220V/240V 1 190 140

Communication/Interface (optional)Serial port ........................................................... RS-232C

Analog terminal .................................................. For analog outputs

Master/slave connection ..................................... For ILV (Independent Lung Ventilation)synchronization

Auxiliary equipment ............................................ For optional equipment

ModesSV 300/SV 300A

Controlled ventilation:

Pressure Control (PC) ........................................ Pressure controlled ventilation

Volume Control (VC) .......................................... Volume controlled ventilation

Pressure Reg. Volume Control (PRVC) .............. Pressure regulated volume controlledventilation

Supported ventilation:

Volume Support (VS) .......................................... Volume supported ventilation

Pressure Support (PS) ........................................ Pressure supported ventilation

CPAP ................................................................. Continuous Positive Airway Pressureventilation

Combined ventilation:

SIMV (Vol. Contr.) + Pressure Support ............... Synchronized Intermittent MandatorySIMV (VC) + PS Ventilation based on volume controlled

ventilation with pressure support

SIMV (Press. Contr.) +Pressure Support ............ Synchronized Intermittent MandatorySIMV (PC) + PC Ventilation based on pressure controlled

ventilation with pressure support

Combined ventilation SV 300A Automode

Pressure Control/Support (PC/S) ........................ After two consecutive patient trigs theVolume Control/Support (VC/S) ventilator shifts from controlled toPressure Reg. Volume Control/Support supported ventilation and remains in the

support mode as long as the patient keepstriggering. If the patient stops breathing, theventilator shifts back to the control modeafter: Adult 12 s, Pediatric 8 s, Neonatal 5 s.

20


Other settings .................................................... Ventilator off Battery charging

Stand by

Optional (On present ventilators the selectorcannot be set in this position)

Knob settingsCMV frequency .................................................. 5 – 150 breaths/minute

SIMV frequency ................................................. 0.5 – 40 breaths/minute

Inspiration time .................................................. 10 – 80% of breath cycle time (stepless)

Pause time ........................................................ 0 – 30% of breath cycle time (stepless)

Pressure control ................................................. 0 – 100 cm H2O

Pressure support ................................................ 0 – 100 cm H2O

PEEP.................................................................. 0 – 50 cm H2O

Trigger sensitivity ............................................... Flow 3 – 32 ml/s (green marked area)Pressure -17 – 0 cm H

2O

Trigger bias flow ................................................ Neonate 8 ml/s (0.5 l/min)

Pediatric 16 ml/s (1 l/min)

Adult 32 ml/s (2 l/min)

Inspiration rise time ............................................ 0 – 10% of breath cycle time (stepless)

Preset tidal volume ............................................ Adult range: 50 – 4000 ml

Pediatric range: 10 – 400 ml

Neonate range: 2 – 40 ml

Preset minute volume........................................ 0.2 – 60 l/min ±6% or ±0.15 l/min

Oxygen breaths .................................................. 100% for 20 breaths or max 1 minute

Start breath ........................................................ Initiation of 1 breath in all modes

Pause hold ......................................................... Insp. or exp.

Alarm silence ..................................................... 2 minute or reset

O2 concentration ................................................. 21 – 100 ±3% O

2

Automode (SV 300A) ......................................... Automode On/Off

21


AlarmsAirway pressure (upper) ..................................... 15 – 120 cm H

2O

High continuous pressure ................................... Set PEEP-level +15 cm H2O for more than 15

seconds

O2 concentration ................................................. Set value ±6%. Lower alarm limit cannot go

below 18% or exceed 90%

Expired minute volume (Upper alarm limit) ........ Adult/Pediatric range: 0 – 60 l/min

Neonate range: 0 – 6 l/min

Expired minute volume (Lower alarm limit) ........ Adult/Pediatric range: 0.3 – 40 l/min

Neonate range: 0.06 – 4 l/min

Apnea .................................................................Adult: 20 s. Pediatric: 15 s. Neonates: 10 s

Gas supply ......................................................... Outside the range 2 (-5%) to 6.5 (+5%) bar

Battery ............................................................... Limited battery capacity: <23 V

No battery capacity: <21 V

High battery: >33.5 V

Technical ............................................................ See table in chapter Patient safety.

MonitoringFrequency (breath cycle time) ............................ CMV or SIMV frequency ±1% or ±0.5 b/min

Pressures .......................................................... Peak, Pause, Mean and End exp. ±5% or ±2cm H

2O

Airway pressure ................................................. Measured

Insp. tidal volume............................................... Adult range: 50 – 3999 ml ±6% or ±3 mlPediatric range: 10 – 399 ml ±6% or ±0.5 mlNeonate range: 2.0 – 39 ml ±6% or ±0.5 ml

Exp. tidal volume ............................................... Adult range: 50 – 3999 ml ±6% or ±3 mlPediatric range: 10 – 399 ml ±6% or ±0.5 mlNeonate range: 2.0 – 39 ml ±6% or ±0.5 ml

Exp. minute volume ........................................... Adult range: 4.0 – 60 l/min ±6% or±0.1 l/minPediatric range: 1.0 – 5.0 l/min ±6% or±0.05 l/minNeonate range: 0.20 – 1.50 l/min ±6% or±0.02 l/min

Flow rate ............................................................ 0.00 – 3.00 l/s or 0.00 – 180 l/min (alt SPG)±1% or ±1 digit

O2 concentration ................................................. ±5% of read value

Supply pressure ................................................. Measured

Battery voltage ................................................... Measured (internal and external)

22

��

��

� ��

300-

F70

X

2 1

General description – Labels

Control unitThere are labels on the control unit with thefollowing information:

1. Label with model number and serialnumber.

Make sure this information is also foundon the cover of this Operating Manual.

2. Labels with version number for thesoftware incorporated on the differentPC-boards.

Patient unitThere are labels on the patient unit with thefollowing information:

1. Label showing that the equipmentcontains components that must bedisposed of according to certain rules.

2. Information about the external batteryinlet.

3. Information about the two fuses at themains inlet.

4. CE-marking.Information about the grounding terminal.

5. Information about the mains voltage.

6. Information about model number andserial number.

23

Only accessories supplies or auxiliaryequipment (“Products and accessories”catalogs 64 74 725 E323E, 64 74 717E323E, and “Spare and exchange parts”catalog 90 34 570 E323E including"Supplement for Spare Parts" 64 08 822E404E) should be connected to or usedin conjunction with the ventilator.Warning: Use of accessories andauxiliary equipment other than thosespecified in the documents mentionedabove may result in degradedperformance and safety of the ventilator.

General description – Connectors

Patient unit• Mains inlet.

• External battery inlet.

• N77 and N78. For auxiliary equipment.

The pin configuration is described in theService Manual.

N 77

N 78

300-

F68

X

Control unitAs an option a Communication Interface(CI-)-board with five connectors is available:

• N80. For synchronization of two ServoVentilator 300.Note! If a SV 300A is used the“Automode” must be turned Off.

• N81. For connection of monitoring/recording equipment.

• N82. For data communication.

• N83. For data communication.

• N84. Optional input interface.

N 80

N 81N 82

N 83

N 84

300-F66X

1

Control panel

ContentsFront panel design and symbols ................. 2

Patient range selection ................................ 3

Airway pressure

Knobs .................................................... 4

Triggering system ................................... 6

Displays ................................................. 8

Mode selection ......................................... 10

Automode SV 300A .................................. 13

Respiratory pattern

Knobs .................................................. 14

Displays ............................................... 16

Volume

Knobs .................................................. 18

Displays, set values ............................. 19

Displays, measured values .................. 19

O2 concentration

Knobs .................................................. 22

Displays ............................................... 23

Alarms and messages

General ................................................ 24

Alarms ................................................. 24

Touchpads............................................ 24

Pause hold ............................................... 26

2

Front panelFor easy and safe operation, the front panel is divided into different fields. The Set ParameterGuide is an additional help when making necessary settings.

Control panel – Design and symbols

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02 40 %

!

Patient rangeselection

Airway pressure

Mode selection O2 concentration Automode

Respiratory pattern Volume

Alarms andmessages

Pause hold3000

226E

Mains Pressure Reg.Volume Control



Volume Support

Volume Control

Pressure Control

Stand by



Optional

Adult

Pediatric

Neonate

Airway press.cm H2O

Upper press. limit

Peak

Mean

Pause

End. Exp.Pressure ControlLevel above PEEP


Automode

Measured freq.b/min

CMV freq. b/min

Set freq.b/min

Insp. period s

Insp. flow l/s

Insp. time %

Pause time %

Volume Volume

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml


PEEP


Insp. rise time %

SIMV freq. b/min


Upper alarm limit

Lower alarm limit

Reset

2 min

Alarms and messages

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

Insp.

Exp.

Pause hold

Oxygen breaths

Start breath


O2 conc. %

On

Off

Support




Mains

3

Patient range selectorWith this knob the patient range is selected.It has three different positions:

• “Adult”

• “Pediatric”

• “Neonate”

The setting affects the:

– continuous flow during expiration.

– maximum inspiratory peak flow.

– maximum measured tidal volume.

– apnea alarm time.

Continuous flow

“Adult” ............................... 32 ml/s (2 l/min)

“Pediatric” .......................... 16 ml/s (1 l/min)

“Neonate”.......................... 8 ml/s (0.5 l/min)

Max inspiratory peak flow

“Adult” range ................................. 200 l/min

“Pediatric” range .............................. 33 l/min

“Neonate” range .............................. 13 l/min

Max measured tidal volume

“Adult” ............................................ 3999 ml

“Pediatric” ......................................... 399 ml

“Neonate”............................................ 39 ml

Apnea alarm time

“Adult” .................................................. 20 s

“Pediatric” ............................................. 15 s

“Neonate”.............................................. 10 s

Control panel – Patient range selection

Adult

Pediatric

Neonate

300-I40E

4

Control panel – Airway pressure

The airway pressure section of the controlpanel has knobs for settings, displays and abargraph for monitoring.

Knobs“Upper press. limit”

With this knob the upper limit for airwaypressure is set. For patient safety the“Upper press. limit” should always be setas low as possible in all modes.

The range is 16 – 120 cm H2O. There aresafety catches at 60, 80 and 100 cm H2O.

If the set upper limit is reached, the alarm isactivated, inspiration is immediatelystopped and expiration started.

“Pressure Control Level above PEEP”

With this knob the pressure control level forthe pressure controlled breaths is set. It isactive in:

– “Pressure Control”

– “SIMV (Press. Contr.) + PressureSupport”.

The range is 0 – 100 cm H2O. There are

safety catches at 30, 60 and 80 cm H2O.

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30

5

Airway press.cm H2O

Upper press. limit

Peak

Mean

Pause


PEEP



300-

I02E

5


“Pressure Support Level above PEEP”

With this knob the pressure support level forthe pressure supported breaths is set. It isactive in:

– “Pressure Support”

– “SIMV (Vol. Contr.) + Pressure Support”

– “SIMV (Press. Contr.) + PressureSupport”.

– SV 300A Automode “Pressure Control/Support”.

The range is 0 – 100 cm H2O. There are

safety catches at 30, 60 and 80 cm H2O.

“PEEP”

With this knob the positive end expiratorypressure level is set. It is active in allmodes.

The range is 0 – 50 cm H2O. There is a

safety catch at 20 cm H2O.

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Airway press.cm H2O

Upper press. limit

Peak

Mean

Pause


PEEP



300-

I03E

6

“Trig. sensitivity Level below PEEP”

With this knob the trigger sensitivity, that isthe strength of the effort the patient mustmake to trigger a breath, is set. It is activein all modes.

Triggering systemThe SV 300/300A has a triggering systemwhere flow or pressure triggering can beused.

Normally flow triggering is preferable andthe sensitivity is set as high as possiblewithout self-triggering.

Flow triggering

The flow triggering system is based onchanges in a continuous flow deliveredfrom the ventilator during the entireexpiratory phase.

The flow is automatically set according tothe selected patient range.

A breath is delivered when the patient hasinhaled a certain part of the continuous flowmeasured by the expiratory flowtransducer.

Pressure triggering

A breath is delivered when the patient hasinhaled the continuous flow and created acertain negative pressure below PEEP.


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Airway press.cm H2O

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Mean

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PEEP



300-

I04E

7

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300-F83X

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-2-2

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Pressure triggerlessmore


A triggered breath is indicated by twoyellow flashing diodes at the bottom end ofthe airway pressure bargraph.

How to set the trigger sensitivity

The normal setting for flow triggering iswithin the green range on the knob scale.Depending on the set patient range and theset sensitivity the patient has to inhale acertain part of the continuous flow to get abreath.

With settings closer to 0 the risk for self-triggering is decreased but it also meansthat the patient has to inhale more of thecontinuous flow to get a breath.

In the red range the patient only has toinhale a very small part of the continuousflow to get a breath. The risk for self-triggering is increased.

If pressure triggering is required the knob isset within the 0 to -17 cm H

2O range. Then

the patient has to inhale the continuousflow and create a pressure below PEEPaccording to the set trigger sensitivity(cm H

2O) to get a breath.

Flow

trigg

er

300-A77E

8

Displays“Peak”

This display shows the measured value ofthe peak pressure at the end of inspiratorytime for each breath. The display valuecorresponds to the right peak pressureindicating diode on the airway pressurebargraph.

“Pause”

This display shows the pressure at the endof the inspiration pause time period for eachbreath. When “Pause hold” is set at“Insp.”during “Volume Control” and “SIMV(Vol. Contr.) + Pressure Support”, thedisplay shows the actual airway pressuremeasured by the exp. pressure transducer.

“Mean”

This display shows the calculated meanpressure value in the breathing system,based on the actual pressures for eachcomplete breath cycle.

“End exp.”

This display shows the pressure at the endof expiration for each breath.

When “Pause hold” is set at “Exp.”, thedisplay shows the total static end exp. lungpressure, including intrinsic PEEP (auto-PEEP), and the set PEEP, that is, totalPEEP.


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300-

I05E

9

40

60

¨Upper press. Limit¨

¨Pressure Control LevelAbove PEEP¨

¨Pressure Support Levelabove PEEP¨

¨PEEP¨

¨Trig. sensitivity Levelbelow PEEP¨

Actual pressure

INSP. EXP.

300-

F88

E

Bargraph

The measured airway pressure and controlknob settings are shown by red, yellowand green diodes on the bargraph.

The diodes on the left are always red.Those on the right are red from 100 to 60,yellow from 60 to 40, green from 40 to 0and yellow below 0.


Airway pressure bargraph indications

Preset “Upper press. limit” is shown by fourdiodes. The set limit should be read at thetwo lower diodes. These two diodes startflashing when the set upper pressure limit isreached or when the limit is set above 100cm H

2O.

Preset “Pressure Control Level above PEEP”is shown by two diodes.

Preset “Pressure Support Level abovePEEP” is shown by two diodes. If“Pressure Support Level above PEEP” isset higher than “Pressure Control Levelabove PEEP”, the diodes indicating bothknobs will start flashing.

The actual pressure is shown by twoflashing diodes, the left showing thepressure on the inspiratory side and theright showing the pressure on theexpiratory side.

Two diodes show preset “PEEP”.

Two diodes show preset “Trig. sensitivityLevel below PEEP”.

300-

F88E

10

Control panel – Mode selection

!

Mains Pressure Reg.Volume Control



Volume Support

Volume Control

Pressure Control

Stand by



Optional

300-I06E

Ventilation modesThe mode selector can be set in 9 differentpositions, providing 8 different modes ofventilation.

A yellow light shows which mode has beenselected.

When any mode is set from “Ventilator offBattery charging” or “Stand by” thesealarms are muted for 20 seconds:

• Expired minute volume.

• Overrange.

• Apnea.

Controlled ventilation

• “Pressure Control”. Pressure controlledventilation.

• “Volume Control”. Volume controlledventilation.

• “Pressure Reg. Volume Control”.Pressure regulated volume controlledventilation.

Supported ventilation

• “Volume Support”. Volume supportedventilation.

• “Pressure Support”. Pressure supportedventilation.

• “CPAP”. Continuous Positive AirwayPressure ventilation.

Combined ventilation

• “SIMV (Vol. Contr.) + Pressure Support”.SIMV based on volume controlledventilation with pressure support added.

• “SIMV (Press. Contr.) + PressureSupport”. SIMV based on pressurecontrolled ventilation with pressuresupport added.

11

SV 300A – Ventilation modesOn the SV 300A the function of the modeselector is exactly the same as on theSV 300 as long as the knob “Automode” isin position “Off”.

When the “Automode” is active (“On”) andthe patient triggers, the ventilator shifts tosupported ventilation in the followingmodes:

• “Volume Control/Support”.

• “Pressure Control/Support”.

• “Pressure Reg. Volume Control/Support”.

These modes are marked in blue on themode selector.

The ventilator will remain in the supportmode as long as the patient triggers. If hestops breathing the ventilator shifts back tothe control mode again.

For a detailed description see chapterVentilation modes.

!

3000227E

Mains Press. Reg. Vol.Control/Support



Volume Support



Stand by



Optional


12


“Optional”

This position is intended for future upgrades.The selector cannot be set in this position ontoday´s ventilators.

Other positions“Ventilator off Battery charging”

When the ventilator is not used, it shouldalways be connected to mains and themode selector should be set to “Ventilatoroff Battery charging” to ensure charging ofthe internal battery.

If mains is not available, an external batterycan be connected. The internal battery willthen be charged from the external battery.The external battery should only beconnected by means of a cable delivered byMAQUET.

“Stand by”

In this position all electronic circuits arepower supplied for warming up and theventilator is ready for use.

All necessary settings for a specific patientcan be made in this position, using the SPGsystem.

In position “Stand by”:

• the inspiratory valve is closed

• the expiratory valve is closed

• the safety valve is closed

• the caution sound will be heard

• all displays are off except the “Alarmsand messages” display which showsSTAND BY if no active alarms exist.

300-

I08E

Stand by

300-

I07E Ventilator off

Battery charging

Optional

300-

I06E

13

Control panel – Automode

The control “Automode” has two positions“On” and “Off”.

“On”

When set to this position and with the modeselector set to “Volume Control/Support”,“Pressure Control/Support” or “PressureReg. Volume Control/Support” the automodeis active. That is:

– the ventilator switches to a support modewhen the patient triggers breaths andremains in this mode as long as the patientkeeps triggering. If he stops triggering, theventilator shifts back to the control modeagain.

A yellow light shows that “Automode” isactive.

On

Off

Support

Automode

3000209E

“Off”

In this position the ventilator operates as anSV 300.

On

Off

Support

Automode

3000210E

“Support”

A yellow light shows that the patient hastriggered breaths and that the ventilator hasswitched from controlled to supportedventilation.

For a detailed description, se chapterVentilation modes.

On

Off

Support

Automode

3000211E

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Resp. patternMeasured freq.b/min

CMV freq. b/min

Set freq.b/min

Insp. period s

Insp. flow l/s

Insp. time %

Pause time %

Insp. rise time %

SIMV freq. b/min

Control panel – Respiratory pattern

KnobsThe respiratory pattern section of the controlpanel has knobs for settings, displays, and abargraph for monitoring.

“CMV freq. b/min”

With this knob the number of ventilatorbreaths/minute during ControlledMechanical Ventilation (CMV) is set.

It must be set in all modes, even inspontaneous modes in which the knobsetting determines the breath cycle timeand frequency reference.

The range is 5 – 150 breaths/minute.

“Insp. time %”

With this knob the inspiration time is set.

It must be set in all modes except“Pressure Support/CPAP”.

The range is 10 - 80% of the breath cycletime. There are safety catches at 20, 50and 70%.

If the “Insp. time %” is set for shortertimes than 80 ms, the yellow light at theknob will start flashing.

15


“Pause time %”

With this knob the pause time is set. It isactive in “Volume Control” and “SIMV (Vol.Contr.) + Pressure Support”.

The range is 0 - 30% of the breath cycle.There is a safety catch at 20%.

Note! The expiration can never be less than20% of the breath cycle. If the result of the“Insp. time %” and “Pause time %”settings is more than 80% of the breathcycle, the pause time is reduced. Seeexamples. The reduced pause time isshown by a flashing yellow light at theknob.

“Insp. rise time %”

With this knob the time period under whichflow/pressure shall increase to its presetlevel in the beginning of the inspiration isset. It is active in all modes.

The range is from 0 – 10% of the presetbreath cycle time. There is a safety catch at1%.

If the knob is set to 0, the flow/pressurewill increase to its preset level instantly atthe start of inspiration.

For better patient comfort, the start ofinspiration can be made softer by increasingthe setting.

“SIMV freq. b/min”

With this knob the number of mandatorybreaths/minute in the SIMV-modes is set.

The range is 0.5 – 40 breaths/minute.

If the “SIMV freq. b/min” is set to a valuehigher than or equal to “CMV freq. b/min”,the yellow light at “SIMV freq. b/min” willstart flashing.

Example 1“Insp. time %” = 60% = 60% inspiration“Pause time %” = 30% = 20% pause

20% expirationExample 2“Insp. time %” = 80% = 80% inspiration“Pause time %” = 30% = 0% pause

20% expiration

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Insp. period s

Insp. flow l/s

Pause time %

Insp. rise time %

SIMV freq. b/min

Insp. time %

16


Displays“Measured freq. b/min”

This red display shows the measuredbreathing frequency.

The displayed value is the total number ofbreaths, i.e. the preset respiratory rate plusspontaneous breaths.

“Set freq. b/min”

This green display normally shows the set“CMV freq. b/min”. In the SIMV modes theset mandatory frequency is shown.

For alternative display information, see nextpage.

“Insp. period s”

This green display normally shows theresulting calculated time in seconds for the“CMV freq. b/min”, “Insp. time%”, and“Pause time%” setting.

For alternative display information, see nextpage.

“Insp. flow l/s”

This green display normally shows thecalculated flow rate in l/second related tothe “Insp. time%”, “Volume” and “Insp.rise time%” settings.

The display is only active in volumecontrolled modes (“Volume Control” and“SIMV (Vol. Contr.) + Pressure Support”).

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I12E

Resp. patternMeasured freq.b/min

CMV freq. b/min

Set freq.b/min

Insp. period s

Insp. flow l/s

Insp. time %

Pause time %

Insp. rise time %

SIMV freq. b/min

17

In the SV 300/300A flow measurementsand all preset and indicated volumes arereferenced to standard pressure(1013 mbar, 760 mm Hg), see page 13 inGeneral description.


12.0 t (s)

2.0: I:E

6.0 /min

Volume Control

Stand by

3000

246E

Set freq.b/min

Insp. period s

Insp. flow l/s

Set freq.b/min

Insp. period s

Insp. flow l/s


Stand by

Alternative use of resp. pattern displays

If the “Stand by” touchpad and a touchpadfor an actual mode are activatedsimultaneously, the displays change toshow:

• Breath cycle time in seconds alternatingwith the text t(s).

• I:E ratio alternating with the text I:E.

• Flow rate in l/min alternating with the text/min.

The values shown on displays with aflashing light can be adjusted.

If the “Stand by” touchpad is activatedagain, the display will change back tonormal operation. This will also occurautomatically after 1 minute.

18

Control panel – Volume

The Volume section of the control panel hasknobs for settings, displays, and twobargraphs for monitoring.

Knobs“Volume”

With this knob the minute and tidal volumesare set. It is active in:

• “Volume Control”

• “Pressure Reg. Volume Control”

• “Volume Support”

• “SIMV (Vol. Contr.) + Pressure Support”

The tidal volume is calculated from the“Volume” and “CMV freq. b/min” settings.

“Lower alarm limit”

The lower alarm limit must always be set ata suitable value for each patient.The range is:• “Adult” 0.3 – 40 l/min.

• “Pediatric” 0.3 – 40 l/min.

• “Neonate” 0.06 – 4 l/min.

“Alarm limits”

During the Set Parameter Guide sequencethis light flashes to indicate when the alarmlimits shall be set.

“Upper alarm limit”

The upper alarm limit must always be set ata suitable value for each patient.The range is:• “Adult” 0 – 60 l/min.

• “Pediatric” 0 – 60 l/min.

• “Neonate” 0 – 6 l/min.

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9 . 9

Volume Volume

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml



Upper alarm limit

Lower alarm limit

300-

I16E

19


In the SV 300/300A flow measurementsand all preset and shown volumes arereferenced to standard pressure(1013 mbar, 760 mm Hg), see page 13 inGeneral description.

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Volume Volume

Tidal vol.ml

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Upper alarm limit

Lower alarm limit

300-

I17E

Displays, set values

“Tidal vol. ml”

This green display shows the preset tidalvolume in milliliters as related to the setminute volume and set CMV frequency.

The range is 2 – 4000 ml.

“Minute vol. l/min”

This green display shows the set minutevolume in liters/minute.

In “SIMV (Vol. Contr.) + Pressure Support”,the mandatory minute volumecorresponding to set tidal volume and setSIMV rate is shown.

Displays, measured values

“Insp. tidal vol. ml”

This red display shows the measuredinspired tidal volume value for each breath.

The capability to measure tidal volume isbased on the selected patient range. Themaximum measurable tidal volume is:

• “Adult” 3999 ml.

• “Pediatric” 399 ml.

• “Neonate” 39 ml.

The display flashes and the OVERRANGEalarm is activated whenever these levelsare exceeded. See chapter Patient safety.

20


“Exp. tidal vol. ml”

This red display shows the measured exp.tidal volume for each breath.

The display flashes when the maximumlevels, as described for “Insp. tidal vol. ml”,are exceeded.

“Exp. minute vol. l/min”

This red display shows the measuredexpired minute volume.

The display flashes at the same time as“Exp. tidal vol. ml” flashes if the maximummeasurable exp. tidal volume is exceeded.

“Neonate 1/10”

This light is lit when the “Neonate” rangehas been selected, indicating that thescales on the alarm limit settings have beenchanged.

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I19E

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Upper alarm limit

Lower alarm limit

Exp. tidal vol.ml


300-

I18E

21


Volume bargraph

There are two volume bargraphs, the leftshowing readings from 0 to 2 l/min and theright showing readings from 2 to 20 l/min.

Volume bargraph indications

Preset “Upper alarm limit” is shown by twored and two green diodes.The set limitshould be read at the two lower diodes. Thetwo lower diodes flash when the limit is setabove 20 l/min and all four diodes flash ifthe set upper alarm limit is exceeded.

The measured expired minute volume isshown by one red and one green flashingdiode.

Preset “Minute volume” is shown by onered and one green diode. When themeasured and preset minute volumes areequal, this indication will be hidden behindthe measured minute volume indication.

Preset “Lower alarm limit” is shown by twored and two green diodes. The set limitshould be read at the two lower diodes. Thediodes flash when the limit is set at thelower end position or if the set lower alarmlimit is exceeded.

Measured minute volume

Preset upper alarm limit

Preset lower alarm limit

Preset minute volume

300-G24E

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Upper alarm limit

Lower alarm limit

300-

I20E

22

Control panel – O2 concentration

Knobs“O2 conc. %”

With this knob the O2 concentration and the

alarm limits are set at the same time.

The setting range for the gas mixer is 21 to100% O

2. There is a safety catch at

60% O2.

The alarm limits are automatically set atapproximately 6% O2 above and below theset concentration value.

There is also an absolute minimum alarmlimit of 18% O

2 which is independent of

operator settings.

21

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40


O2 conc. %

300-I21E

“Oxygen breaths”

Before or after suctioning it may benecessary to give the patient extra oxygen.By setting this knob to “Oxygen breaths”,100% O

2 will be given during 20 breaths or

during max. 1 minute.After one minute breaths with thepreviously set O

2 concentration will be

given again even if 20 oxygen breaths havenot been delivered.

To cancel before 20 oxygen breaths aregiven, set the knob to “Oxygen breaths”again.

Oxygen breaths are shown by the yellowlight “Oxygen breath running” and thedisplay “O

2 conc.%” showing 100%.

When oxygen breaths are activated the O2

concentration alarm is muted for amaximum time of 55 seconds. The alarmsfor expired minute volume, apnea andoverrange will be muted during the oxygenbreaths.


Oxygen breaths

Start breath

300-I23E

23

Control panel – O2 concentration

“Start breath”

With this knob it is possible to give thepatient a breath with preset values at anytime.

In the SIMV modes, turning the knob to“Start breath” will start a mandatory breath.

At repeated activation, make sure thepatient has sufficient time to expirebetween breaths.

This green display shows the set O2 conc.

value.

Displays

21

30

40

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80

90

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40


O2 conc. %

300-I21E

Oxygen breaths

Start breath


300-I24E

24

Control panel – Alarms and messages

GeneralThis section is described in more detail inchapter “Patient safety”.

Alarm signalsAudible

There are two different audible signals:

– alarm with increasing volume.

– caution signal, a “ticking” sound.

Visual

A flashing red light indicates a high priorityalarm.

A steady yellow light indicates that:

– an alarm condition has been stored inmemory or

– an alarm has been reset and changed toa caution situation.

By touching the pad to the right of thealarm lamps, different messages will bedisplayed.

Touchpads

02 20.9 %Alarms and messages

3000248E

AirwayPressure

O2 concentration

Alarm Caution sound

Flashing light Steady light

3000

247E

25

Control panel – Alarms and messages

“Reset”

Some alarms are manually reset by turningthe knob to “Reset”. See details on eachalarm in chapter Patient safety.

“2 min”

Most audible alarms can be silenced for 2minutes by turning the knob to “2 min”.

Alarm muting before disconnect

Audible alarms for expired minute volume,apnea and overrange, can be cancelled inadvance for 2 minutes by holding the knobat “2 min” for more than 2 seconds.

A short beep indicates that the alarms havebeen muted. The display “Alarms andmessages” also shows ALARMS MUTED.

A detailed description of all alarms andsafety devices is found in chapter Patientsafety.

Reset

2 min

300-I26E

Reset

2 min

300-I25E

26

“Exp.”

In position “Exp.”, the inspiratory andexpiratory valves are closed after expirationas long as the knob is kept in this positionbut with a built-in limit of 30 seconds.

This gives an exact static measurement ofthe end expiratory lung pressure, and alsomakes it possible to measure intrinsic PEEP(auto-PEEP).

Control panel – Pause hold

Insp.

Exp.

Pause hold

300-I27E

Insp.

Exp.

Pause hold

300-I28E

“Insp.”

In position “Insp.” the inspiratory andexpiratory valves close after inspiration. Thepause is prolonged as long as the knob iskept in this position but with a built-in limitof 5 seconds.

This allows for an exact staticmeasurement of the end inspiratory pausepressure.

1

Contents

Pressure Regulated Volume Control ........... 2

Volume Support ......................................... 8

Pressure Control ...................................... 16

Volume Control ........................................ 22

Pressure Support/CPAP ........................... 28

SIMV (Vol. Contr.) + Pressure Support ..... 34

SIMV (Pressure Contr.)+ Pressure Support .................................. 42

Automode SV 300A ................................. 50

Ventilation modes

The curves in this chapter can beobtained from, e.g., a Servo Screen 390.

The suggestions made in thetroubleshooting sections are onlyexamples of some symptoms andsolutions. The symptoms mentioned canbe caused by several other reasons.

2

Pressure Regulated Volume Control

Ventilation modes – PRVC

Pressure

TimeFlow

Time

300-H00E

PEEP

In this control mode the breaths are delivered with preset tidal volume and frequencyduring the preset inspiratory time.

The ventilator will automatically, breath by breath, adapt the inspiratory pressure controllevel to changes in the mechanical properties of the lung/thorax to ensure that the lowestpossible level is always used to deliver the preset tidal and minute volume.

The inspiratory pressure is kept constant during the whole preset inspiratory time.

The inspiratory flow is decelerating.

Aim of mode

The aim of this mode is to:

• deliver a preset tidal/minute volume with apreset frequency and with a constantpressure during the entire inspiration.

• deliver a decelerating inspiratory flow.

• deliver a controlled respiratory rate andI:E ratio.

• deliver a set tidal volume at the minimumpressure level necessary.

3

Applicable patients

This mode can be suitable for:

• patients with lung injury.

• patients with asthma.

• patients with chronic obstructive bronchitis.

• pediatric patients.

• postoperative patients.

• patients with no breathing capacity.

• patients who initially need high initial flowrates to open up closed lungcompartments.

• patients in whom unnecessary highairway pressures should be avoided.

• patients in whom you need to control thevolume during pressure controlledventilation when alveolar improvementoccurs, e.g., during surfactant therapy.

Important considerations

• Ensure that minute volume alarms areappropriately set.

• The upper pressure limit setting has twofunctions in this mode:

1. If the upper pressure limit is reached,the ventilator will immediately shift toexpiration and give alarm for high airwaypressure.

2. A deterioration in the patient´scompliance/resistance can lead to anincreased pressure necessary to deliverthe set volume. If the peak airwaypressure rises to 5 cm H2O below theset upper pressure limit a “Limitedpressure” alarm is given. The breath willstill be delivered but the tidal volumewill be lower than preset.

• Maximum allowed inspiratory time is 80%of the respiratory cycle.

• Inspiratory rise time can be set to adjustthe time during which the pressure risesto its preset level.

• The patient can initiate breaths dependingon the trigger sensitivity setting. Thebreaths will be delivered according to theset parameters.

• If the patient is disconnected for anyreason and then reconnected, the returnto the set tidal volume is accomplished bya reactivation of a test breath sequence.Target tidal volume will thus be restoredwithin a few breaths.

For patient safety, always set “Upperpress. limit” as low as possible.


4

3000249X

TroubleshootingThis is a short clinical troubleshooting guide for this specific mode. For generaltroubleshooting see chapter Troubleshooting and for alarms and other safety issues, seePatient safety.

Symptom Cause Solution

Settings

The following knobs shall be used.

• Patient range selector

• “Upper press. limit”

• “PEEP”

• “Trig. sensitivity Level below PEEP”

• “CMV freq. b/min”

• “Insp. time %”

• “Insp. rise time %”

• “Volume”

• “Upper alarm limit”/“Lower alarm limit”

• “O2 conc. %”

SV 300A• “Automode”


Inspiratory pressureincrease.

Increased resistance ordecreased compliance.

Reevaluate the patient andact according to findings.

If resistance increasesbecause of:

Secretions � suctioning.

Bronchospasm �bronchodilators.

If compliance decreases:

Increase PEEP if cycling onthe low part of the Volume-Pressure curve.

Decrease PEEP if cyclingon the high part of theVolume-Pressure curve.

5

Technical mode description


The first breath is a test breath with apressure level of 10 cm H

2O (5 cm H

2O in

earlier software versions) above PEEP.

After a few breaths the target volume willbe achieved.

Maximum available pressure level is5 cm H

2O below preset upper pressure

limit.

The ventilator is continuously, breath bybreath, adapting the inspiratory pressure tochanges in the volume/pressurerelationship.

When the target volume has been achievedand the measured volume increases aboveor decreases below the preset tidal volume,the pressure level is regulated in smallsteps of max 3 cm H

2O until preset

volumes are delivered.

When measured tidal volume correspondsto preset value, the pressure level remainsconstant.

When the ventilator regulates the inspira-tory pressure the displayed set andmeasured tidal volumes can differ.

Pressure

TimeFlow

300-H05E

Constantpressure

Time

PEEP

300-H47E

Pressure

TimeFlow

Time

Upper Pressure Limit

5 cm H2O10 cm H2O

PEEP

��

��

��

��

��

��

6

Curves and loops obtained from Servo Screen 390


��

��

��

��

�

��

�

��

� �

��

�

��

��

�

��

��

��

��

� ��

��

��

� ��

��

��

��!�!��"��

#��

$��"��

%& �$'��

�()��

��!� !�*% %�!�+�!��

� ��

��

��

��

��

��

��,�

Curves from a patient with moderate lung injury.

Dynamic characteristics are low compared to static compliance due to moderatebronchospasm.

7

Notes


8

Volume Support

Ventilation modes – VS

Trig. Trig. Trig. Trig. Trig.

Time

Time

Pressure

Flow

300-H07E

PEEP

In this support mode the patient triggers each breath. If he can breathe without support,true spontaneous breathing with monitoring of achieved volumes is possible. If he needssupport the ventilator will automatically, breath by breath, adapt the inspiratory pressuresupport level to changes in the mechanical properties of the lung/thorax to ensure that thelowest possible pressure level is always used to deliver the preset tidal and minutevolumes.

The inspiratory pressure is kept constant.

The inspiratory flow is decelerating.

In case of apnea there is an automatic back-up with PRVC.

Aim of mode

The aim of this mode is:

• to get ventilation in which every breath ispatient initiated.

• to achieve a desired tidal/minute volumefor the patient.

• to have variable support depending onthe patient´s requirements for eachbreath.

• to allow for variations in both breathingcapacity and work of breathing.

• to provide adequate support for patientswho can trigger the ventilator but do nothave sufficient capacity to breathe bythemselves.

• to facilitate the weaning process.

• to ensure a back-up ventilation in theevent of apnea.

9

contd.


Applicable patients


• patients with some but not enoughbreathing capacity.

• patients requiring breath by breathvariations in inspiratory pressure support.

• patients ready to be weaned.

• patients requiring prolonged phases ofweaning from ventilator dependence.

• postoperative patients with intactrespiratory drive.

• patients requiring some level of pressuresupport but with a minimum volumeguarantee.

• patients recovering from lung injury.

• patients not requiring full ventilation butonly partial support.


• Initial values for expected “spontaneous”tidal volumes should be set.

• Inspiration stops and expiration startswhen the peak flow drops to 5% of thegenerated initial flow.

• CMV rate and inspiratory time (time or I:Eratio) must be set.

• Maximum allowed inspiratory time for theback-up rate is 80% of the respiratorycycle.

• The upper pressure limit setting has twofunctions in this mode:

1. If the upper pressure limit is reached,the ventilator will immediately shift toexpiration and give alarm for high airwaypressure.

2.A deterioration in the patient’scompliance/resistance can lead to anincreased pressure necessary to deliverthe set volume. If the peak airwaypressure rises to 5 cm H

2O below the

set upper pressure limit a “Limitedpressure”alarm is given. The breath willhowever still be delivered but the tidalvolume will be lower than preset.

10

3000250X

Important considerations, continued


• Inspiratory rise time can be adjusted tochange the onset of the inspiratory flowto the patient.

• If the patient is disconnected for anyreason and then reconnected, the returnto the set tidal volume is accomplished bya reactivation of a test breath sequence.Target tidal volume will thus be restoredwithin a few breaths.


• If the specified apnea delay time isexceeded, the ventilator will automaticallyrevert to the PRVC mode at the set CMVrate, inspiratory time and with the sametidal volume as in the volume supportmode.

The ventilator will remain in this modeuntil the alarm is reset by the operator.When the apnea alarm has been reset theventilator switches back to “VolumeSupport”.

• The patient triggers every breath.Mandatory breaths are only provided inthe event of apnea.

• The patient determines the breath rateand the inspiratory time.

Settings

Note that all parameters used in PRVC mustbe preset for the apnea ventilation!




• “PEEP”





• “Volume”

• “Upper alarm limit” and “Lower alarmlimit”

• “O2 conc. %”

11

TroubleshootingThis is a short clinical troubleshooting guide for this specific mode. For general troubleshootingsee chapter Troubleshooting, and for alarms and other safety issues see Patient safety.


Apnea and shift to PRVC. Hyperventilation. (CO2 level

too low).

No drive.

Decrease ventilation.

Reevaluate patient.

Sedation?

CNS status?

Irregular breathing. Mismatch between setfrequency and patientfrequency.

If patient frequency is within50-150% of preset – OK!

If outside that range,readjust set frequency andvolume.

CNS malfunction. Depends on problem.

Increase in supportpressure.

Decreased compliance.

Increased resistance.

Decreased patient effort.

Clinical evaluation. Actionaccording to findings.

No decrease in supportpressure.

Usually undetectedsecondary problem inpatient. Very seldom thatthe patient is toocomfortable.

Find the cause and treatsecondary problem.

Decrease to lowest possiblevolume.

Low support pressure. Normal when patient is ableto breathe on his own.

Consider extubation ifextubation criteria arefulfilled.


12


The first trig during start up initiates a testbreath with a pressure level of 10 cm H

2O

(5 cm H2O in earlier software versions)

above PEEP.

Maximum available pressure support is5 cm H

2O below preset upper pressure

limit.


The ventilator is continuously, breath bybreath, adapting the inspiratory pressure tochanges in the volume/pressurerelationship.

If the measured volumes decrease belowthe set volumes the pressure support levelis increased in small steps of max.3 cm H

2O until preset volumes are

delivered.

The following applies as long as thepatient’s breathing frequency is lower thanthe preset CMV-frequency:

If the support pressure level causes largerminute volumes than preset, the supportpressure is lowered in small steps of max.3 cm H

2O until preset minute volume is

delivered.

The following applies as long as thepatient’s breathing frequency is higher thanpreset CMV-frequency:

If the support pressure level causes largertidal volume than preset the supportpressure is lowered in small steps of max.3 cm H

2O until the preset tidal volume is

delivered.

Trig. Trig. Trig. Trig.300-H03E

Pressure

TimeFlow

Time

max 3 cm H2O

PEEP

Trig. Trig. Trig.300-H02E

Pressure

TimeFlow

Time


5 cm H2O10 cm H2O

PEEP

13


321

Apnea

Pressure

Flow Time

Time

300-H11E

= Set frequency = Patient frequency

Apnea delaytime

Trig.Trig.Trig.Trig.

1. If the patient increases his respiratory rateabove the set rate, the preset tidal volumewill still be maintained and the minutevolume will increase.

2. If the patient breathes at a lower than set(expected) frequency, a new targetvolume based on preset minute volumeis calculated by the ventilator. Thecalculated target volume will be theventilator´s reference for regulation ofthe inspiratory support pressure. Themaximum tidal volume is 150% of thepreset.

Example

Set (expected) frequency = 10 breaths/min.Set tidal volume = 500 ml (5 l/min.)If the patient´s frequency drops below 10breaths/min. the tidal volume will increaseto meet preset minute. (max. 1.5 × 500 ml= 750 ml.) Under certain conditions thepatient can actively breathe more than thisvolume.

3. Exceeded apnea alarm limit results inalarm and automatic switch to PRVC.

14



602179

9.8

3116

STOP

FREEZE

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cm H2O

100

1.3

50

10

Flow-Time Flow-Volume

Pressure-Time Volume-Pressure cm H2O

NUMERIC MENU

TREND MENU

PATIENT MENU

SYSTEM MENU

VTiml

PmeancmH20

PEEPcmH20

PEEPtotcmH2012:41

MVel/min

Csml/cmH2012:42

Dyn.Charml/cmH20

Freqb/min

NOPRINTER

INFOCURVE MENU

Patient ID Date & time

UN-FREEZE

300-H12E

Curves from a patient with lung injury. There is no static compliance due to difficulty intaking measurements in a spontaneously breathing patient.

Since flow triggering is used there is no deflection at the beginning of the Volume-Pressurecurve.

15


Notes

16

Pressure

Flow Time

Time

300-H13E

PEEP


Ventilation modes – PC

Pressure Control

In this control mode the ventilator delivers breaths with a constant preset pressure, with adecelerating flow during a preset inspiratory time, and at a preset frequency.

Aim of mode


• provide a constant pressure level duringthe entire inspiration.

• avoid unnecessarily high peak airwaypressures.

• provide a decelerating flow pattern.

• enable controlled respiratory rate and I:Eratio.

17


Applicable patients


• patients with no breathing capacity.

• patients who have a leakage at theendotracheal tube.

• patients who need a high initial flow ratein order to open up closed lungcompartments.

• patients in whom variations in lungpressures and high peak airway pressuresmust be avoided.

• patients with lung injury.

• patients with asthma.

• patients with chronic obstructivebronchitis.

• patients with bronchospasm.

• pediatric patients with uncuffed tubes.

• postoperative patients.



• The inspiratory time must be set, eitheras an exact time or as an I:E ratio, todefine the length of the inspiration.

• As pause is not used, expiration will startas soon as the set inspiratory time hasbeen achieved.

• Carefully monitor tidal volume closely asthis parameter varies according tochanges in the patient´s lung/thoraxcompliance/resistance. These changescan at times be considerable.

• Maximum allowable inspiratory time is80% of the respiratory cycle.

18

3000251X

TroubleshootingThis is a short clinical troubleshooting guide for this specific mode. For general troubleshootingsee chapter Troubleshooting, and for alarms and other safety issues see Patient safety.


Settings

Steep increase ininspiratory pressure.


Increase “Insp. rise time%”.

Volume too low. Reevaluate patient.

Increase inspiratorypressure and treat problemaccording to findings.

Inspiratory pressure too lowin present condition.

Decreased compliance orincreased resistance.

Volume too high.

Decrease inspiratorypressure.

Inspiratory pressure toohigh in present condition.

Increased compliance ordecreased resistance.

Normal but can be adjusted.




• “Pressure Control Level above PEEP”

• “PEEP”






• “O2 conc. %”


• “Pressure Support Level above PEEP”

19

Technical mode descriptionVentilation is started by the ventilator or by apatient triggering effort and a breath is givenwith the preset values.

The preset “Pressure Control Level abovePEEP” is maintained during the presetinspiration time.

The flow is decelerating.


Pressure

Flow Time

Time

300-H18E

PEEP


Pressure

Flow Time

Time300-H17E


PEEP

Pressure

Flow Time

Time

300-H15E


PEEP

Pressure

Flow Time

Time

300-H16E


PEEP

Inspiratory flow at the end of inspirationtime may be low or even zero.

If relatively long inspiration time is used, theflow may reach zero before the end ofinspiration.

If the set upper pressure limit is reached,the ventilator will immediately shift toexpiration and give alarm for high airwaypressure.

20

Curves obtained from Servo Screen 390


566138

12.4

3614

9

42

FREEZE

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH20

100

1.3

50

300-H43E

10

NUMERIC MENU

TREND MENU

PATIENT MENU

SYSTEM MENU NO

PRINTERINFOCURVE

MENU UN-FREEZE



VTiml

PmeancmH20

PEEPcmH20

PEEPtotcmH2012:41

MVel/min

Csml/cmH2012:42

Dyn.Charml/cmH20

Freqb/min


Curves from a postoperative patient with a bowel perforation and sepsis.

21


Notes

22

Pressure

Flow Time

Time

300-H19E

PEEP

Ventilation modes – VC

Volume Control.

In this control mode the ventilator delivers the preset tidal volume with a constant flowduring the preset inspiratory time, preset pause time, and at the preset frequency.

Aim of mode


• provide controlled ventilation.

• deliver a preset tidal/minute volume with apreset respiratory rate independent ofchanges in lung/thorax resistance/compliance.

• provide a controlled inspiratory time andpause time (if set).

23


Applicable patients


• patients with “normal” lungs beingventilated for other reasons.

• general postoperative patients, againpreferably with “normal” lungs.



• If the patient creates a pressure belowthe set PEEP level during inspiration, theventilator will provide a higher flow. Thepressure is regulated to the set PEEPlevel to provide an “on-demand flow”corresponding to the patient´s needs. Thepatient should never be able to generate apressure lower than the set sensitivitydue to the fact that flow demands arematched providing for bettersynchronization with the ventilator.

• Carefully monitor patient airwaypressures at all times, as these canchange, sometimes quite dramatically, asthe patient´s lung/thorax resistance/compliance changes.


• If the upper pressure limit is reached theventilator will immediately shift toexpiration and give alarm for high airwaypressure.

24

3000252X

TroubleshootingThis is a short clinical troubleshooting guide for this specific mode. For general trouble-shooting see chapter Troubleshooting and for alarms and other safety issues, see Patientsafety.



Settings



• “Upper press.limit”

• “PEEP”


• “CMV freq. b/min.”


• “Pause time %”


• “Volume”


• “O2 conc. %”


FRC increasing. If consistent, consider airtrapping.

FRC decreasing.

Water in the flowtransducer.

Inspired tidal volumelarger than expiredtidal volume.

Expired tidal volumelarger than inspiredtidal volume.

If consistent, considerwhether desired, otherwiseincrease PEEP.

Dry the flow transducer.

25

Technical mode descriptionThe preset tidal volume is delivered at thepreset frequency, during preset inspirationtime, with preset pause time and withconstant flow.

The pressure increases the more the lungsare filled.

If the patient triggers to preset triggersensitivity level, a volume controlled breathis delivered earlier according to presetvalues.


Pressure

FlowTime

Time

300-H20E

PEEP

Pressure

Flow Time

Time

300-H23E

PEEP

Upper Pressure Limit If the set upper pressure limit is reached,the ventilator will immediately shift toexpiration and give alarm for high airwaypressure.

300-H21E

Pressure

Flow Time

Time

PEEP

Pressure

Flow Time

Time

300-H22E

PEEP

If the patient’s breathing effort reaches2 cm H

2O below preset PEEP level, the

ventilator permits a higher flow.

The pressure is then regulated to 2 cm H2O

above PEEP level. The patient can therebyincrease the tidal volume to meet his needsduring the inspiration time.

If the patient’s breathing effort is enough toreach 2 cm below preset PEEP level but notenough to complete preset inspiratory tidalvolume, the ventilator detects thedecreasing flow and switches back to thevolume controlled breath so that the presettidal volume will be obtained.

26



566157

12.9

462322

10

i

9

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH20

100

1.3

50



NUMERIC MENU

TREND MENU

PATIENT MENU

SYSTEM MENU

VTiml

PmeancmH20

PEEPcmH20

PEEPtotcmH2012:41

MVel/min

Csml/cmH2012:42

Dyn.Charml/cmH20

Freqb/min

NOPRINTER

INFOCURVE MENU


UN-FREEZE

300-H41E

Curves from a patient with moderate lung injury and moderate bronchospasm. The Volume-Pressure loop shows that the tidal volume is a little bit too high (beaking at top ofinspiration)

27


Notes

28

Trig. Trig. Trig. Trig.

Pressure

FlowTime

Time

300-H24E

PEEP


Ventilation modes – Pressure Support/CPAP

Pressure Support/CPAP

In this support mode the ventilator will deliver breaths with the preset pressure keptconstant during the entire inspiration and with a decelerating flow.

All breaths are triggered by the patient.

Aim of mode

The aim of this mode is:

• to provide support during the patient´sinspiration according to the presetpressure support level.

• to provide a fast and flexible response tothe patient´s needs.

• to provide CPAP either on its own or, ifrequired, combined with pressuresupport.

• to provide monitoring and alarm function forsafety reasons in a spontaneous mode.

• to provide ventilation in which every breathis patient triggered.

• to provide adequate support for patientswho do not have sufficient capacity toobtain adequate ventilation.

• to facilitate the weaning process.

29


Applicable patients

This mode can be suitable for patients :

• with intact respiratory drive.

• who can trigger breaths but cannot achieveadequate minute ventilation.

• during weaning.

• with changing ventilatory needs.

• who can breathe spontaneously but requireCPAP to prevent airway closure/collapse.

• who breathe spontaneously but still requireadditional monitoring.

• who are sensitive to the work of breathingimposed by tracheal tube and ventilator andrequire support to match and overcomethis resistance.

• requiring prolonged phases of weaningfrom ventilator dependence.

• where it is important to prevent muscularexhaustion during weaning.


• Ensure that the minute volume alarms areappropriately set.

• Tidal volumes should be closely monitoredas they can vary as changes in lung/thoraxmechanics occur.

• The PSV breath will terminate when theinspiratory flow drops to 5% of whateverthe peak flow necessary to deliver thebreath was.

• CMV rate and inspiratory time (time or I:Eratio) must be set to ensure the timing ofthe safety feature for cessation ofpressure support.

• If the inspiratory time should exceed80% of the cycle (determined by theCMV rate setting), the ventilator will shiftto expiration.

• A suitable trigger sensitivity level shouldbe set.

30

3000253X

TroubleshootingThis is a short clinical troubleshooting guide for this specific mode. For generaltroubleshooting see chapter Troubleshooting, and for alarms and other safety issues seePatient safety.



Settings





• “PEEP”




• ”Upper alarm limit” and “Lower alarmlimit”

• “O2 conc. %”

Trigger sensitivity set toolow.

Set ”Trig. Sensitivity Levelbelow PEEP” to a moresensitive position.

Decrease support pressure.Consider using VS.

Reevalutate patient.

Too high support level.

No drive.

Increased patient frequencyor ventilation too low.

Too low support level. Increase support pressure.Consider using VS.

Difficult for the patient totrigger breaths.

Apnea or low frequency.

31

20

3040 50 60

70

80

90100

100

0

300-H46E




When the patient triggers, the inspiration isassisted by pressure at preset pressuresupport level.

The patient determines respiratory rate andI:E ratio which may vary from breath tobreath.

If the upper pressure limit is reached, theventilator will immediately shift to expirationand give alarm for high airway pressure.

Trig. Trig.

Pressure

Flow Time

Time

300-H26E

PEEP


Trig. Trig.

Pressure

Flow Time

Time

300-H27E

PEEP


To get CPAP breathing, set “PressureSupport Level above PEEP” to zero.

32



Curves from a postoperative patient following abdominal surgery due to bowel perforation.During the operation septic. Initially ventilated on PRVC, after 24 hours shifted to PC.

589128

7.2

4614

FREEZE

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH2O

100

1.3

50

589128

7.2

4614

FREEZE

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH2O

100

1.3

50

10

STOP

300-H58E



NUMERIC MENU

TREND MENU

PATIENT MENU

SYSTEM MENU

VTiml

PmeancmH20

PEEPcmH20

PEEPtotcmH20

MVel/min

Csml/cmH20

Dyn.Charml/cmH20

Freqb/min

NOPRINTER

INFOCURVE MENU


UN-FREEZE

33


Notes

34

SIMV (Volume Control) + Pressure Support

Ventilation modes – SIMV (VC)+PS

Trig. Trig. Trig. Trig.

Pressure

FlowTime

Time

300-H28E

SIMV-period

SIMV-cyclePressure SupportLevel above PEEP

PEEP

In this combination mode the ventilator will deliver mandatory breaths, as describedunder VC, and assisted breaths triggered by the patient, as described under PS.

Aim of mode


• provide some mandatory, volumecontrolled breaths according to presetvalues.

• give the patient inspiratory pressuresupport during spontaneous breaths.

• deliver mandatory breaths (SIMV breaths)with a preset tidal/minute volume and apreset respiratory rate independent ofchanges in resistance/compliance.

• provide a constant flow for the mandatorybreaths.

35

Applicable patients

This mode can be suitable for patients:

• with some but not sufficient breathingcapacity.

• who need some breaths with controlledtidal volumes, inspiratory time and I:Eratio.

• during weaning.



• The time in seconds for one SIMV cycle is

Each SIMV cycle is made up of two parts:

1. The SIMV period during which themandatory breath (or synchronizedbreath) will occur.

2. The spontaneous period during whichthe patient can breathe on his own withan inspiratory pressure support.

The SIMV period is set for each individualpatient by the CMV rate setting.

Example:

SIMV rate:10 � breath cycle time = 6 seconds.

CMV rate:30 � SIMV period = 2 seconds.

The cycle is then based on the SIMVperiod. For example, if the set inspiratorytime is 25%, the inspiratory time will be25% of 2 seconds = 0.5 second. Theexpiratory time will then be 1.5 secondswhich means an I:E ratio of 1:3. Theremaining time is available forspontaneous breathing.

A breathing effort from the patientduring the SIMV period will initiate theSIMV breath according to preset timingand with preset tidal volume.

A breathing effort from the patientduring the spontaneous period willresult in either a purely spontaneousbreath or a pressure supported breath.

If the patient has insufficient sponta-neous breathing capabilities, themaximum time between any two SIMVbreaths is just over one cycle. To ensureadequate ventilation, the apnea alarm isactivated if the time between any twoconsecutive breaths exceeds the apneadelay time.

• The PSV breath will terminate when theflow drops to 5% of the peak flownecessary to deliver the breath.

• If the inspiratory time should exceed80% of the cycle (determined by theCMV rate setting), the ventilator willshift to expiration.

60preset SIMV-rate.

6010

6030

36

• If the patient creates a pressure belowthe set PEEP level during inspiration inSIMV breaths, the ventilator will providea higher flow. The pressure is regulatedto the set PEEP level to provide an “on-demand” flow corresponding to thepatient´s needs. The patient shouldnever be able to generate a pressurelower than the set sensitivity due to thefact that flow demands are matchedproviding for better synchronization withthe ventilator.

• Pause can be added in this mode.During a mandatory breath the pause iscounted as a part of the total inspiratorytime.


Example:

Inspiratory time 25%

Pause time 10%

The maximum allowable inspiratory timeis 80% (I:E ratio 4:1).

• Carefully monitor airway pressures for themandatory breaths at all times as thesecan change, sometimes quitedramatically, as the patient’s lung/thoraxresistance/compliance changes.

• If the upper pressure limit is reached theventilator will immediately shift toexpiration and give alarm for high airwaypressure.

Total inspiratory� time=35%

(I:E ratio 1:1.9)

37

3000254X

Settings





• “PEEP”




• “Pause time %”


• “SIMV freq. b/min”

• “Volume”


• “O2 conc. %”


Increased inspiratorypressure.

Reevaluate thepatient. Act accordingto findings.

Increased resistanceor decreasedcompliance.

TroubleshootingThis is a short clinical troubleshooting guide for this specific mode. For generaltroubleshooting see chapter Troubleshooting, and for alarms and other safety issues seePatient safety.


38



The ventilator is triggered by flow orpressure. A new breath (SIMV breath orassisted breath) is delivered when the trig.sensitivity level is reached.

Trig. Trig.

Pressure

Flow Time

Time

300-H30E


PEEP

The first time the patient triggers within theSIMV period the delivered SIMV breath is avolume controlled breath. During each SIMVbreath the patient can get an increased flowif needed. See VC description.

The number of supported breaths triggeredwithin the SIMV cycle depends on thepatient´s breathing efforts.

Trig. Trig.

Pressure

Flow

Time

Time

300-H32E

SIMV-periodSIMV-cycle

PEEP


39


Each time the patient triggers after theSIMV breath (within the same SIMV cycle),a supported breath is given with pressuresupport at the preset “Pressure SupportLevel above PEEP”. The patient determinesrespiratory rate, tidal volume and inspirationtime. The number of assisted breathstriggered within the SIMV cycle depends onthe patient’s breathing efforts.

If a SIMV period passes without anybreathing effort, a mandatory volumecontrolled breath is started by the ventilatorat the end of the SIMV period. During thevolume controlled breaths, the patient hasthe possibility to increase the flow.

Pressure

FlowTime

Time

300-H51E

SIMV-period

SIMV-cycle Pressure SupportLevel above PEEP

PEEP

Trig Trig

Pressure

FlowTime

Time

300-H50E

SIMV-period

SIMV-cycle

PEEP


Trig.

40


372156

12.1

2128

9

42

FREEZE

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH20

100

1.3

50

372156

12.1

2128

9

42

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH20

100

1.3

50

10

UN-FREEZE

300-H44E



NUMERIC MENU

TREND MENU

PATIENT MENU

SYSTEM MENU

VTiml

PmeancmH20

PEEPcmH20

PEEPtotcmH2012:41

MVel/min

Csml/cmH2012:42

Dyn.Charml/cmH20

Freqb/min

NOPRINTER

INFOCURVE MENU


STOP

Curves from a COPD patient, Resistance high (Ppeak

– PPause

).

Dynamic characteristics low compared to Static compliance. Pattern recognition on theFlow-Volume and Volume-Pressure curves demonstrate the same.

.


41


Notes

42

SIMV (Pressure Control) + Pressure Support

Ventilation modes – SIMV (PC)+PS

Trig. Trig. Trig. Trig. Trig. Trig.

Pressure

FlowTime

Time

300-H35E

SIMV-period


PEEP

SIMV-cyclePressure ControlLevel above PEEP

In this combination mode the ventilator will deliver mandatory breaths, as describedunder PC, and assisted breaths triggered by the patient, as described under PS.

Aim of mode


• provide some mandatory breaths at aconstant pressure level during the entireinspiration.

• avoid unnecessarily high peak airwaypressures.

• provide a decelerating flow pattern forboth mandatory and spontaneous breaths.

• give support to the patient´s spontaneousbreaths.

43

contd.


Applicable patients

This mode can be suitable for patients:

• with some but not sufficient breathingcapacity.

• who have a leakage at the endotrachealtube.

• who need some breaths with adecelerating flow, controlled according toset pressure and inspiratory time.

• who need a high initial flow rate in orderto open up closed lung compartments.

• in whom variations in lung pressures andhigh peak airway pressures must beavoided.

• during weaning.

• who require a reduced work of breathing.



• The inspiratory time must be set (eitheras an exact time or as an I:E ratio) todefine the length of the inspiration. Whenthe inspiratory time has been completed,expiration will follow.

• The “Pressure Control Level abovePEEP” must be set to decide theinspiratory pressure level.

• As pause is not used, expiration will startas soon as the set inspiratory time hasbeen achieved.

• Carefully monitor tidal volume closely asthis parameter varies according tochanges in the patient´s lung/thoraxresistance/compliance. These changescan at times be considerable.

• If the patient triggers during the SIMVperiod, he will receive a breath accordingto the set parameters.

If he triggers during the spontaneousperiod, he will get either a purelyspontaneous breath or a pressuresupported breath.

• The onset of inspiration can be adjustedby altering the “Insp. rise time %” knob.

• Maximum allowable inspiratory time is80% of the respiratory cycle.

44

Important considerations, continued

• The time in seconds for one SIMV cycle is

Each SIMV cycle is made up of two parts:

1. The SIMV period during which themandatory breath (or synchronizedbreath) will occur.

2.The spontaneous period during whichthe patient can breathe on his own withan inspiratory pressure support.

The SIMV period is set for each individualpatient by the CMV rate setting.

Example:

SIMV rate:10 � breath cycle time = 6 seconds.

CMV rate:30 � SIMV period = 2 seconds.

The cycle is then based on the SIMV period.For example, if the set inspiratory time is25% the inspiratory time will be 25% of 2seconds = 0.5 second. The expiratory timewill then be 1.5 seconds which means anI:E ratio of 1:3. The remaining time isavailable for spontaneous breathing.


A breathing effort from the patient duringthe SIMV period will initiate the SIMVbreath according to preset timing andwith preset tidal volume.

A breathing effort from the patient duringthe spontaneous period will result ineither a purely spontaneous breath or apressure supported breath.

If the patient has insufficient sponta-neous breathing capabilities, themaximum time between any two SIMVbreaths is just over one cycle. To ensureadequate ventilation, the apnea alarm isactivated if the time between any twoconsecutive breaths exceeds the apneadelay time.

• The PSV breath will terminate when theflow drops to 5% of the peak flownecessary to deliver the breath.

• If the inspiratory time should exceed80% of the cycle (determined by theCMV rate setting), the ventilator willshift to expiration.

60preset SIMV-rate.

6010

6030

45

3000255X


Settings




• “Pressure Control Level above PEEP”


• “PEEP”





• “SIMV freq. b/min”


• “O2 conc. %”

TroubleshootingThis is a short clinical troubleshooting guide for this specific mode. For generaltroubleshooting see chapter Troubleshooting and for alarms and other safety issues, seePatient safety.


Irregular breathing. Mismatch betweenmandatory and assistedbreaths.

Increase pressure support.

The patient is fighting theventilator.

The same as above or toolow CMV frequency.

Consider more pressuresupport and/or less SIMV,or consider using VS.

46



The ventilator is triggered by flow orpressure. A new breath (SIMV breath orassisted breath) is delivered when the trig.sensitivity level is reached.

Trig. Trig. Trig.

Pressure

Flow Time

Time

300-H37E


PEEP


Pressure

Flow Time

Time

300-H38E

SIMV-period

SIMV-cycle


PEEP


Trig.Trig. Trig.

The first time the patient triggers within theSIMV period the delivered SIMV breath is apressure controlled breath. See PCdescription.

The number of supported breaths triggeredwithin the SIMV cycle depends on thepatient’s breathing efforts.

Each time the patient triggers after theSIMV breath (within the same SIMV cycle),a supported breath is given with pressuresupport at the preset “Pressure SupportLevel above PEEP”. The patient determinesrespiratory rate, tidal volume and inspirationtime. The number of assisted breathstriggered within the SIMV cycle depends onthe patient’s breathing efforts.

47


If a SIMV period passes without anybreathing effort, a mandatory pressurecontrolled SIMV breath is started by theventilator at the end of the SIMV period.

Pressure

Flow Time

Time

300-H49E

SIMV-cycle

SIMV-period


PEEP


Trig.

48



685158

10.9

3716

9

42

FREEZE

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH20

100

1.3

50

685158

10.9

3716

9

42

FREEZE

i

1.5l/s

0

1.5

s l

1.3l/s

1.3

1.3

s

50cmH20

100

1.3

50

10

300-H45E

NUMERIC MENU

TREND MENU

PATIENT MENU

SYSTEM MENU NO

PRINTERINFOCURVE

MENU UN-FREEZE



VTiml

PmeancmH20

PEEPcmH20

PEEPtotcmH2012:41

MVel/min

Csml/cmH2012:42

Dyn.Charml/cmH20

Freqb/min


Curves from a patient with lung injury. Resistance low. Compliance reasonably high due toPEEP.

49


Notes

50

Ventilation modes – Automode (SV 300A)

• The “Automode” can be used in “VolumeControl/Support” where the supportmode is “Volume Support”, “PressureControl/Support” where the supportmode is “Pressure Support” and“Pressure Reg. Volume Control/Support”where the support mode is “VolumeSupport”.

• If the patient can trigger the ventilator in acontrol mode and maintain spontaneousbreathing the ventilator will switch fromcontrolled to supported ventilation. Theshift is shown by the yellow light“Support”.

• If the patient cannot maintainspontaneous breathing, the ventilator willshift back to controlled ventilation againafter: Adult 12 seconds, Pediatric 8seconds and Neonate 5 seconds.

• If a Bi-Phasic Ventilation Module for SV 300 is connected to a SV 300A the“Automode” must be turned off.

• Normally, the “Automode” operateswithout problems, however the followingcan disturb the functionality if the triggersensitivity is set too close to the red area.

– a short apnea period might occur aftersuctioning.

– artifactual triggering can be induced:

– by leakage or endotracheal tubesuctioning

– in patients with stiff lungs and highcardiac output.

– by external manipulation, e.g., physio-therapy or manipulation of patienttubings.

Settings

• The same as for the SV 300 but with theaddition of the controls “Automode” and,in “Pressure Control/Support”, “PressureSupport Level above PEEP”. Beforeactivating the “Automode” in “PressureControl”, make sure the “PressureSupport Level above PEEP” is set to asuitable level for the patient.

Automode“Automode” on SV 300A is a feature wheretwo consecutive triggering efforts from thepatient will shift the ventilator status from acontrol mode to a support mode. Theventilator will remain in the support mode aslong as the patient keeps triggering. If thepatient stops breathing the ventilator willshift back to the control mode.

The “Automode” includes the followingcombinations of control and supportmodes:

Control mode Support mode

Volume Control �� Volume Support

Pressure Control �� Pressure Support

Pressure Reg.Volume Control �� Volume Support

Aim of mode

• The aim of the “Automode” is to adapt theventilator status to the patient’s breathingefforts, including respiratory drive. Thismeans that the discontinuation ofmechanical ventilation can start as soon asthe patient makes his first breathingefforts. Patient comfort should alsoincrease due to less fighting of theventilator. Conceivably this may set aplatform for a decrease in sedation leveland also a shorter stay on the ventilator.

Applicable patients

• The same as for Servo Ventilator 300.Note! The “Automode” is not applicablefor patients with neuromuscular block ordrugs that severely depress therespiratory drive.


• The mode descriptions for the SV 300apply to SV 300A except for thedescription on the following pages.

51


Mode description – PressureReg. Volume Control/Support

When the “Automode” is set to “On” and the patient triggers two consecutive breaths,the ventilator shifts from Pressure Reg. Volume Control (PRVC) to Volume Support.

At the second trig the ventilator delivers one more PRVC-breath. The next breath will be avolume supported breath with a pressure level equal to the last PRVC breath.

Then each breath has to be triggered by the patient, and the pressure support will varywith each breath aiming at the same tidal volume a set in PRVC.

Pressure

Flow Time

Time

��

��

��

��

��

��

� �

��

��

3 cm H2O


Pressure

Flow

Time

Time

PEEP

3000207E

If the airway pressure exceeds thecalculated inspiratory pressure by morethan 3 cm H

2O during the controlled breaths

inspiration will immediately stop andexpiration start.

At a lower than set spontaneous frequency, the target tidal volume will increase tocompensate for the loss in minute volume.

If the patient does not trigger the ventilator will switch back to the control mode after:

Adult:12 seconds. Pediatric: 8 seconds and Neonats: 5 seconds

For detailed technical mode descriptions, see Ventilation modes: Pressure Reg. VolumeControl and Volume Support.

52


Mode description – VolumeControl/Support

When the “Automode” is set to “On” and the patient triggers two consecutive breathsduring the expiration time, the ventilator shifts from Volume Control (VC) to VolumeSupport.

At the second trig the ventilator delivers on more VC-breath. The next breath will be avolume supported breath with a pressure level equal to the pause pressure in VC, or, if nopause time is set, calculated with the formula: (P

peak-PEEP) × 50% + PEEP.

Then each breath has to be triggered by the patient, and the pressure support will varywith each breath aiming at the same tidal volume a set in VC.

At a lower than set spontaneous frequency, the target tidal volume will increase tocompensate for the loss in minute volume.

If the patient does not trigger, the ventilator will switch back to the control mode after:

Adult: 12 seconds, Pediatric: 8 seconds and Neonate: 5 seconds.

For detailed technical mode descriptions, see Ventilation modes: Volume Control andVolume Support.

Pressure

Flow Time

Time

��

��

��

��

��

��

� �

��

��

53


3 cm H2O


Pressure

Flow

Time

Time

PEEP

3000207E

Pressure

Flow Time

Time

No patient trig.

Controlledventilation

Supportedventilation

Controlledventilation

Trig. Trig. Trig.

PEEP

3000205E

Trig.

Mode description – PressureControl/Support

When the “Automode” is set to “On” and the patient triggers two consecutive breaths,the ventilator shifts from Pressure Control (PC) to Pressure Support.

At the second trig the ventilator delivers on more PC-breath. The next breath will be apressure supported breath with a pressure level equal to the set “Pressure Support Levelabove PEEP”.

Then each breath has to be triggered by the patient, and the pressure support will be thesame for each breath.

If the patient does not trigger, the ventilator will switch back to the control mode after:Adult: 12 seconds. Pediatric: 8 seconds and Neonate: 5 seconds.For detailed technical mode descriptions, see Ventilation modes: Pressure Control andPressure Support.

If the airway pressure exceeds the setinspiratory pressure by more than 3 cm H

2O

during the controlled breaths, inspirationwill immediately stop and expiration start.

1

Contents

General ....................................................... 2

”Alarms and messages” displayand alarm memory ..................................... 3

Airway pressure ......................................... 4

O2 concentration ......................................... 6

Expired minute volume ............................... 7

Apnea alarm ............................................... 8

Gas supply ................................................. 9

Battery ...................................................... 10

Technical .................................................. 11

Table of clinical alarms ........................ 14-15

Table of all alarms ............................... 16-17

Table explanations .................................... 18

Patient safety

2

The Servo Ventilator 300/300A has a numberof alarms for the protection of the patientand for alerting the staff of changes inpatient conditions or possible malfunctionsof the ventilator.

The primary alarm is a micro-processorsystem. There is also a back-up alarmsystem for airway pressure, expired minutevolume and oxygen concentration.

The back-up alarm system is only inoperation if the microprocessor system fails.

High priority alarm

High priority alarm is given with red flashinglight and an audible signal with an increasingvolume except for airway pressure alarmwhere the alarm starts at maximum level.

A text with information about the alarmcause will automatically be displayed on the“Alarms and messages” display.

If more than one alarm is active, the alarmwith the highest priority according to thetable on pp 16 – 17 will be displayed. Theother alarm texts will be shown when thecorresponding touchpad is activated.

Caution signal

When the caution signal, a ticking sound anda yellow light, is active the reason and themeasured oxygen concentration are shownalternating on the display.

The caution signal is also active whencertain alarms have been reset. For details,see table on pp 16 – 17.

Patient safety – General

2 min3000

256E

Alarms and messages

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

Reset

XXXXXXXXXXXXX

Alarms and messages

3000258E

XXXXXXXXXXXXX

Alarms and messages

3000257E

3

“Alarms and messages”display

Normal display function

The display normally shows the measuredO2 concentration.

Touchpad activation

If a touchpad is activated when no alarm isactive, the display will show different textsdepending on which touchpad has beenselected.

.

Alarm memory

When a high priority alarm is no longeractive, the alarm indication is stored inmemory. This is indicated by a yellow lightat the touchpad for the alarm.

When the touchpad is activated the alarmtext is displayed.

If an alarm is reset or if mode is changed,the stored alarm text disappears.

If the audible alarm has been muted and,within 2 minutes, the knob “Reset” isactivated, the audible alarm will come back.

Alarm

When an alarm is given the reason isautomatically displayed.

Patient safety – General

02 21 %Alarms and messages

300-

G41

E

Alarms and messages

300-

G43

E

O2 conctoo low

O2 concentration

XXXXXXXXXXXXX

Alarms and messages

300-

G45

E


300-

G42

E

AirwayPressure

O2 concentration

4

Airway pressure

“Upper press. limit”

If the set “Upper press. limit” is reached, ahigh priority alarm will be given.

At the same time inspiration willimmediately stop and expiration start.

The red light at “Airway pressure” flashesand the display “Alarms and messages”shows Airway pressure too high.

This alarm cannot be muted.

Patient safety – Airway pressure

For patient safety, always set “Upperpress. limit” as low as possible in allmodes of ventilation.

Note: If airway pressure rises 6 cm H2Oabove set upper pressure limit the safetyvalve opens.

The safety valve also opens if systempressure exceeds 120 cm H2O.

Limited pressure

If the ventilator in the modes “Pressure Reg.Volume Control” and “Volume Support”cannot obtain set tidal volume within thelimited permitted pressure control level (5cm H2O below set upper pressure limit) andthis situation goes on for 3 consecutivebreaths, a high priority alarm will be given.

The red light at “Airway pressure” flashesand the display “Alarms and messages”shows the text Limited pressure.

This alarm can be muted.

3000

259E

AirwayPressure

Alarms and messages

AIRWAY PRESSURETOO HIGH

300-

G48

E

AirwayPressure

Alarms and messages

Limited pressure

5

300-

G47

XPatient safety – Airway pressure

High continuous pressure

If the airway pressure is higher than setPEEP level +15 cm H2O continuously formore than 15 seconds, a high priority alarmis given.

The red light at “Airway pressure” flashesand the display “Alarms and messages”shows High continuous pressure.


Safety valve

If the airway pressure continues to increaseand exceeds 6 cm H2O above the set“Upper press. limit”, the safety valve willopen.

The safety valve will remain open as long asthe airway pressure is too high.

An alarm is given with a continuous sound,the red light at “Airway pressure” flashesand the display “Alarms and messages”shows Airway pressure too high.

The safety valve will open mechanically ifthe pressure exceeds 120 cm H2O.

300-

G49

E

AirwayPressure

Alarms and messages

High continuouspressure

6

Lower and upper alarm limit

The alarm limits are automatically set atapprox. 6% O2 above and below the set O2value. High priority alarm is given if FIO2 isoutside the set alarm limits.

The red light at “O2 concentration” flashesand the display “Alarms and messages”shows O2 conc too low/high.


If the alarm limit is exceeded less thanabout 55 seconds the alarm memory will notbe set.

If the O2 concentration setting is changedmore than 2% the alarm is automaticallymuted for maximum 55 seconds. This alsoapplies at activation of “Oxygen breaths”.

High priority alarm is also given,independently of settings, if the oxygenconcentration drops below 18%.

O2 cell disconnect

If the O2 cell is not connected a high priorityalarm is given.

The red light at “O2 concentration” flashesand the display “Alarms and messages”shows O2 SENSOR.

This alarm can be muted with “2 min” or by“Reset”. If the alarm is reset, it will changeto a caution signal.

Patient safety – O2 concentration

Alarms and messages

300-

G50

E

O2 conc toolow/high

O2 concentration

300-

G51

E

Alarms and messages

O2 SENSOR

O2 concentration

7

Patient safety – Expired minute volume

Upper alarm limit

High priority alarm is given if the exhaledminute volume exceeds the preset alarmlimit.

The red light at “Exp. minute volume”flashes and the display “Alarms andmessages”shows Exp. minute volume too

high.


Lower alarm limit

High priority alarm is given if the exhaledminute volume drops below the presetalarm limit.

The red light at “Exp. minute volume”flashes and the display “Alarms andmessages” shows Exp. minute volume

too low.


When the control is set to its leftmostposition, the minimum alarm limit is:

“Adult” ........................................... 0.3 l/min

“Pediatric” ...................................... 0.3 l/min

“Neonate” .................................... 0.06 l/min

The limits for high and low expiredminute volume must always be properlyset for each patient.

Exp. minutevolume

300-

G52

E

Alarms and messages

Exp minute volumetoo high

Exp. minutevolume

300-

G53

E

Alarms and messages

Exp minute volume too low

8

Apnea alarm

High priority alarm is given if the timebetween two consecutive efforts to triggerthe ventilator is longer than:

“Adult” .................................................. 20 s

“Pediatric” ............................................. 15 s

“Neonate” ............................................. 10 s

The red light at “Apnea” flashes and thedisplay “Alarms and messages” showsAPNEA ALARM.


At apnea alarm in “Volume Support”, theventilator will automatically switch over to“Pressure Reg. Volume Control”. Theventilator will remain in this mode until thealarm is manually reset or if another mode isselected.

Patient safety – Apnea

Apnea

300-

G54

E

Alarms and messages

APNEA ALARM

9

Alarm

High priority alarm is given if the pressure ofany of the connected gases is outside therange 2 (-5%) to 6.5 (+5%) bar. This willoccur if:

• One gas is disconnected.• One gas module is disconnected.• Supply pressure is too high/low.

Gas supply air

If the air supply is outside the range the redlight at “Gas supply” flashes and the display“Alarms and messages” shows:Air supply pressure too low/high,

Air: X.X bar, O2: X.X bar.

The high priority alarm may be downgradedto a silent caution alarm if the set O2concentration is between 98 and 100%.

Gas supply O2

If the O2 supply is outside the range the redlight at “Gas supply” flashes and the display“Alarms and messages” shows:O2 supply pressure too low/high,

Air: X.X bar, O2: X.X bar.

The high priority alarm may be downgradedto a silent caution alarm if the set O2concentration is between 21 and 23%.

The flow from the missing gas isautomatically compensated for so that thepatient will get preset volumes andpressure.

Out of gas

If no gas supply is available, the red light at“Gas supply” flashes and the display“Alarms and messages” shows: Air supply

pressure too low, O2 supply pressure too

low Air: X.X bar, O2: X.X bar.

The safety valve and the expiratory valvewill also open.

All these alarms can be muted.

Patient safety – Gas supply30

0-G

67E

Alarms and messages

Gas supply

Air supply pressuretoo low

O2 supply pressuretoo low

Air: X.X bar O2: X.X bar

300-

G56

E

Alarms and messages

O2 supply pressure too low/high


Gas supply

300-

G55

E

Alarms and messages

Air supply pressure too low/high


Gas supply

10

Switch to battery operation

At mains failure, the ventilator will automati-cally switch over to battery operation. Theswitch will be indicated by a high priorityalarm.

When the alarm is reset, the ventilatorcontinues to operate on battery, the cautionsignal is active (yellow light at “Battery” islit) and the display “Alarms and messages”shows: BATTERY alternating with theO

2 concentration.

Limited battery capacity left

High priority alarm is given at a batteryvoltage below 23 V, indicating limited batterycapacity.

The red light at “Battery” flashes and thedisplay “Alarms and messages” shows:Limited battery capacity left Internal

X.X V.


No battery capacity left

High priority alarm is given at a batteryvoltage below 21 V, indicating no batterycapacity.

The red light at “Battery” flashes and thedisplay “Alarms and messages” shows:No battery capacity left.

This alarm cannot be muted.

At 19.5 V the gas modules close, theexpiratory valve and the safety valve openand an additional alarm sounds during 2minutes.

At this point, the ventilator must bedisconnected from the patient and thebattery must be charged.

Patient safety – Battery30

0-G

58E

Battery

300-

G59

E

Alarms and messages

Limited batterycapacity left

Internal: X.X V

Battery

300-

G60

E

Alarms and messages

No batterycapacity left

SEEOPERATING MANUAL

Battery

11

Irregularities

In the unlikely event of irregularities (e.g.flashing display, disturbed operation), normalfunction will generally be restoredautomatically within a few seconds.

In exceptional cases, such as high ESDlevels, a manual operation of the modeselector to the “Ventilator Off” positionand then back again to the originalposition may be necessary to restore fullventilatory support.

Alarms

Alarms and alarm messages are given forcertain technical problems. Most of thesehave to be remedied by local technical stafftrained by MAQUET or a service technicianfrom MAQUET and are not described in thismanual.

All alarms that are caused by a minorproblem which can be remedied by clinicalstaff are described in this chapter.

At any alarm followed by the text RESTART

on the “Alarms and messages” display,turn the ventilator off and start again. If thedisplay still shows RESTART, refer toservice technician.

Patient safety – Technical��

��

��

��

��

��

12

Overrange

If the combination of the control panelsettings or resulting insp. flow exceedsmaximum flow for the selected patientrange a high priority alarm is activated.

The red light at “Technical” flashes and thedisplay “Alarms and messages” shows:OVERRANGE: Select PEDIATRIC/ADULT.


The “Insp. tidal vol. ml”, “Exp. tidal vol. ml”and “Exp. minute vol. l/min” displays willalso be flashing if the maximum measurablevolumes (“Neonate” 39.5 ml, “Pediatric”395 ml) are exceeded.

Check tubings

This alarm may be activated by adisconnect of the exp. pressure transducertubings or by a faulty exp. pressuretransducer.

The pressures measured by the insp. andexp. pressure transducers are compared atthe point when expiration starts for everybreath.

At alarm activation the red light at“Technical” flashes and the display “Alarmsand messages” shows: Check tubings.

The safety valve and the expiratory valvewill also open for approx. 5 seconds.


Patient safety – Technical30

0-G

61E

Technical

Alarms and messages

CHECK TUBINGS

300-

G62

E

Technical

Alarms and messages

OVERRANGE:Select

PEDIATRIC/ADULT

13

Patient safety – Technical

Supply voltage

The internal power supply is monitored andan alarm will be activated if any of theinternal supply voltages exceeds its upper orlower alarm limit. Such an alarm situationwill automatically lead to opening of theSAFETY VALVE and of the EXPIRATORYVALVE and closing of the GAS MODULES. Inthis situation the primary alarm system and/or the back-up alarm system will beactivated. The back-up alarm systemgenerates an audible alarm. ”Alarms andmessages” text and/or flashing LEDindicators may also be shown on the frontpanel.

Back-up alarm

The back-up alarm system monitors:

• Airway pressure

• Expired minute volume

• Oxygen concentration

• Internal supply voltages.

The back-up alarm consists of an intermit-tent or in some cases continuous audiblealarm. This alarm tone is generated by abeeper located next to connector N 82 on theupper right-hand side of the control unit. Forchecking purpose, a few short beeps of thisback-up alarm will be heard each time theMode selector is turned from or to theposition ”Ventilator off”.

Special note concerning failure of internalsupply voltage

Should the +5 V internal supply voltage fail,all front panel indications may be turned offand the intermittent back-up alarm signalmay be the only alarm indication.This alarm situation may also occur if themains voltage is higher than specified for thepower supply.

14

Type of alarm and priority order Priority level Mutable

Airway pressure High No

Apnea High Yes(10)(11)(15)

Expired minute volume High Yes(10)(11)(15)

O2 concentration High Yes

O2 cell disconnect High/Caution(9) Yes

No battery capacity left High No

Limited battery capacity left High Yes

External power source failure High Yes

Pressure transducer error High(4) Yes

Out of gas High(3) Yes

Gas supply Air High/silent caution(14) Yes

Gas supply O2 High/silent caution(13) Yes

High continuous pressure High Yes

Overrange High Yes(10)(11)(15)

Regulation pressure limited High Yes

For a complete table of all alarm functions, see pp 16–17.

For footnotes and other explanations, see page 18.

Patient safety – Table of clinical alarms

15

Patient safety —Table of clinical alarms

Resettable Memory “Alarms and messages” text

Aut Yes Airway pressure too high

Aut(1) Yes APNEA ALARM

Aut Yes Exp. minute volume too low/high

Aut Yes(2) O2 conc too low/high

Aut/man Yes O2 SENSOR

Aut Yes No battery capacity left SEE OPERATING MANUAL

Aut Yes Limited battery capacity left Internal: X.X V

Aut/man No BATTERY

Aut Yes CHECK TUBINGS

Aut Yes Air supply pressure too low O2 supply pressure too low Air: X.X bar O2: X.X bar

Aut Yes Air supply pressure too low/high Air: X.X bar O2: X.X bar

Aut Yes O2 supply pressure too low/high Air: X.X bar O2: X.X bar

Aut Yes High continuous pressure

Aut Yes Overrange: Select pediatric/adult

Aut Yes Limited pressure

16

Type of alarm and priority order Priority level Mutable

Power failure test High Yes

Internal RAM test High Yes

Internal ROM test High Yes

Internal CPU test High Yes

Ref and timing MM error High Yes

Mixer MM error High Yes

Exp. flow MM error High Yes

Panel MM error High Yes

Range switch error High Yes

Mode switch error High Yes

Airway pressure High No

Apnea High Yes(10)(11)(15)

Expired minute volume High Yes(10)(11)(15)

O2 concentration High Yes

O2 cell disconnect High/Caution(9) Yes

No battery capacity left High No

Limited battery capacity left High Yes

High battery voltage High Yes

External power source failure High/caution(8) Yes

Pressure transducer error High(4) Yes

Power failure High Yes

O2 potentiometer error High Yes

Out of gas High(3) Yes

Gas supply Air High/silent caution(14) Yes

Gas supply O2 High/silent caution(13) Yes

High continuous pressure High Yes

CMV potentiometer error High Yes

SCM µP error High Yes

Overrange High Yes(10)(11)(15)

Barometer error High Yes

Regulation pressure limited High Yes

For footnotes and other explanations, see page 18.

Patient safety – Table of all alarms

17

Resettable Memory “Alarms and messages” text

No No Technical error code PFT RESTART

No No Technical error code RAM RESTART

No No Technical error code ROM RESTART

No No Technical error code CPU RESTART

Aut(7) Yes(6) Techn. error code µP R&T SEE OPERATING MANUAL/RESTART

Aut(7) Yes(6) Techn. error code µP Mix SEE OPERATING MANUAL/RESTART

Aut(7) Yes(6) Techn. error code µP Exp SEE OPERATING MANUAL/RESTART

Aut(7) Yes(6) Techn. error code µP Pan SEE OPERATING MANUAL/RESTART

Aut Yes Technical error code SwR SEE OPERATING MANUAL

Aut Yes Technical error code SwM SEE OPERATING MANUAL

Aut Yes Airway pressure too high

Aut(1) Yes APNEA ALARM

Aut Yes Exp. minute volume too low/high

Aut Yes(2) O2 conc too low/high

Aut/man Yes O2 SENSOR

Aut Yes No battery capacity left SEE OPERATING MANUAL

Aut Yes Limited battery capacity left Internal: X.X V

Aut Yes Internal battery voltage too high Internal: X.X V

Aut/man No BATTERY

Aut Yes CHECK TUBINGS

Aut Yes Technical error PF SEE OPERATING MANUAL

Aut Yes Technical error PoO SEE OPERATING MANUAL

Aut Yes Air supply pressure too low O2 supply pressure too low Air: X.X bar O2: X.X bar

Aut Yes Air supply pressure too low/high Air: X.X bar O2: X.X bar

Aut Yes O2 supply pressure too low/high Air: X.X bar O2: X.X bar

Aut Yes High continuous pressure

Aut Yes Technical error code PoC SEE OPERATING MANUAL

Aut(7) Yes(6) Technical error code µP SCM SEE OPERATING MANUAL/RESTART

Aut Yes Overrange: Select pediatric/adult

Aut Yes Technical error code Ba SEE OPERATING MANUAL

Aut Yes Limited pressure

Patient safety – Table of all alarms

18

Priority level

High/Caution means that the high priorityalarm changes to caution signal at reset.

Resettable

Aut means that the alarm is automaticallyreset when the reason for alarm no longerexists.

Man means that the alarm has to bemanually reset.

Table footnotes(1) Apnea alarm in Volume Support must be

manually reset even if the reason for thealarm no longer exists.

(2) Oxygen concentration alarm must beactive more than 55 seconds to set thememory.

(3) When out of gas alarm is activated, thesafety valve and the expiratory valve areopened.

(4) When pressure transducer error alarm isactivated, the safety valve is opened forapprox. 5 seconds.

(6) No memory function if the alarm isactivated during start up of the system.

(7) No reset possibility if the alarm isactivated during start up of the system.The ventilator must be turned off and onagain and the micromodules must gothrough new tests which may fail or notfail.

(8) The high priority alarm is downgraded tocaution signal by manual reset.Exception: In “Stand by” an Externalpower source failure is not resettable,only mutable.

Patient safety – Table explanations

(9) The high priority alarm is downgraded tocaution signal by manual reset.

(10) By disconnect preparation the alarm willbe muted for two minutes in advance.

(11) When starting “Oxygen breaths” thealarm will be muted in advance duringthe oxygen breaths.

(13) The high priority alarm is downgraded toa silent caution signal by manual reset ifthe preset O2 concentration is between 21and 23%.

(14) The high priority alarm is downgraded toa silent caution signal by manual reset ifthe preset O2 concentration is between 98and 100%.

(15) By changing mode from “Ventilator offBattery charging” or “Stand by” to anyother mode the alarm will be muted for20 seconds in advance.

1

Set-ups and connection to patient

ContentsSet-upsIntensive care 1 ........................................... 2

Intensive care 2 ........................................... 3

Connection to patientCompressible volume .............................. 4-5

Calculation of compressible volume ............ 6

Dead space ................................................. 7

Compensation for compressible volumeand dead space .......................................... 7

Examples .................................................... 8

2

310

14 3 2

83

7 6 5

3000

260X

9 10 11

Set-ups – Intensive care 1

This is an example of a possible set-up.Some of the equipment shown is avalibalein different variants, e.g., for children andfor adults. See the catalog Products andAccessories for more information.

1. Mobile Cart 852. Servo Screen 3903. Nipple connector4. Support arm

9. Nipple connector fornebulizer

10. Patient tubes11. Bacteria filter

5. Y-piece6. Servo Humidifier 1537. Angled connector8. Nebulizing chamber

3

15

11 27 5 489 4 6

1

10

412 14

3

3 3 33000261X

13

Set-ups – Intensive care 2

This is an example of a possible set-up.Some of the equipment shown is avalibalein different variants, e.g., for children andfor adults. See the catalog Products andAccessories for more information.

11. CO2 transducer

12. Nebulizing chamber13. Nipple connector for

nebulizer14. Water trap15. Bacteria filter

6. Patient tube heater7. Humidifier (FP)8. Support arm9. Probe housing

10. Y-piece

1. Mobile Cart 852. Servo Screen 3903. Nipple connector4. Patient tube5. Nipple connector (FP)

4

3000262X

4040 5050

6060 4040

55-17-17 00

Connection to patient

Compressible volumeSome of the inspiratory minute volume doesnot reach the patient because it is needed forcompression of gas in the tubing system andhumidifier. The compressible volume in theServo Ventilator 300/300A itself is negligible.

When setting the minute volume, includingthe compensation for dead space, thecompressible volume must be allowed forby adding a corresponding minute volumeto the minute volume for the patient. In“Volume Control” mode and “PressureRegulated Volume Control” the volume isset byt the knob “Volume”. In “PressureControl” mode a desired volume can bereached by adjusting the pressure controllevel with the knob “Pressure Control Levelabove PEEP” and wathing the measuredexpired minute volume.

Calculation of the breathing systems’compressible volume

• Assemble the complete breathing systemwhich is to be used.

• Set:– Patient range selector: “Adult”.– Mode selector: “Stand by”.– “Upper press. limit”: 60 cm H2O.– “Pressure Control Level above PEEP”:

40 cm H2O.– “CMV freq. b/min”: 40 breaths/min.– “Insp. time %”: 50%.– “Insp. rise time %”: 5%.– “Trig. sensitivity Level below PEEP”:

- 17 cm H2O.– “PEEP”: 0 cm H2O.– “Automode”: Off.

5

300-G64X

= 40

XX


• Block the opening of the Y-piece/ServoHumidifier.

• Set to “Pressure Control” mode.

• Adjust the “Pressure Control Level abovePEEP” so that the “Peak” display shows40 cm H2O.

• Note the “Insp. tidal vol.” display reading.See example on page 8.

• Make all settings as appropriate for thepatient.

• Connect the patient.

6

3000

341X

XX=

= XX

= XX


• For “Volume Control”: read the “Pause”pressure.

• For “Pressure Control”: read the “Peak”pressure.

• For “PRVC”: wait 10 breaths then readthe “Peak” pressure.

• Calculate the compensation (ml) forcompressible volume in each breath:

measured “Pause” or “Peak”pressure (cm H

2O)

Vc= ×

40 (cm H2O)

measured insp. tidal volume (ml).

• Calculate the total minute volumecompensation (ml/min) for dead spaceand compressible volume:

Total minute volume compensation =

(Vd + V

c) × set CMV frequency (b/min)

To get the minute volume compensation in l/min, divide the calculated value above(ml/min) by 1000.

7


Accessories Dead space (Vd)Servo Humidifier 151 ........................... 35 mlServo Humidifier 152 ........................... 55 mlServo Humidifier 153 ........................... 70 mlSampling adapter for Servo GasMonitor 120 ........................................... 3 ml

Dead spaceWhen setting minute volume, dead space inthe breathing system (between the Y-pieceand patient) should be compensated for.Dead space for some accessories are listedto the left.

Calculation of minute volumecompensation for dead space

Minute volume compensation (ml/min) fordead space =

Vd × CMV frequence (b/min) desired for the

patient.

Compensation for deadspace and compressiblevolumeIn Volume Control and PRVC:

Set preset minute volume = desired minutevolume (l/min) for the patient + total minutevolume compensation (l/min).See examples on next page.

Note

Always consider that the displayed measuredexpired minute volume is the sum of theexpired minute volume from the patient andthe minute volume needed for compressionof gas in the breathing system.

8

Example 1 (Adult patient)

Adult silicone rubber tubes (2 × 150 cm)Servo Humidifier 153

Estimated dead space for the patient = 150 ml

Measured “Insp. tidal vol.” = 36 ml Measured from test set up, see p. 5

Desired minute volume for the patient = 7.5 l/min.

Desired “CMV freq. b/min” = 15 breaths/min

Read pause or peak pressure = 22 cm H2O

Vd

= 150 ml

Vc

= (22 cm H2O/40 cm H

2O) × 36 ml = 19.8 ml

Total minute volume compensation = (Vd + V

c) × set CMV frequency =

(150 ml + 19.8 ml) × 15 b/min= 2547 ml/min = 2.547 l/min.

Adjust the minute volume to 7.5 + 2.5 = 10 l/min

Example 2 (Neonate patient)

Fischer & Paykel MR 600 with infant humidifying chamberInfant silicone rubber tube kit for F&P MR 600

Estimated dead space for the patient = 10 ml

Measured “Insp. tidal vol.” = 32 ml Measured from test set up, see p. 5

Desired minute volume for the patient = 0.6 l/min. Measured from test set up, see p. 5

Desired “CMV freq. b/min” = 40 breaths/min Measured from test set up, see p. 4

Read pause or peak pressure = 11 cm H2O

Vd

= 10 ml

Vc = (11 cm H2O/40 cm H2O) × 32 ml = 8.8 ml

Total minute volume compensation = (Vd + V

c) × set CMV frequency

= (10 ml + 8.8 ml) × 40 b/min = 752 ml/min= 0.752 l/min.

Adjust the minute volume to 0.6 + 0.75 = 1.35 l/min


1

Pre-use check

ContentsPreparations ................................................ 2

1. Start up ................................................. 4

2. Leakage test .......................................... 5

3. Upper pressure limit alarm .................... 6

4. Minute volume alarms .......................... 8

5. Apnea alarm ........................................ 11

6. O2 alarm .............................................. 12

7. Gas supply system ............................. 15

8. Battery operation ................................. 19

9. Automode (SV 300A only) ................... 21

10. Log sheet ............................................ 22

The pre-use check is a simplified functioncheck which can, if allowed by hospitalrules, be done instead of the functioncheck before connecting the ventilator to apatient. This pre-use check must notsubstitute for the complete functioncheck, as described in chapter Functioncheck, which must be done after cleaningand after calibration. If a complete functioncheck has been performed with thepatient system that is to be used justbefore the ventilator is connected to apatient, it replaces the pre-use check.If any malfunctions are detected duringthe pre-use check, the ventilator must notbe connected to patient. The malfunctionmust be remedied by local technical stafftrained by MAQUET or a servicetechnician from MAQUET.

For those who do not have access totubings and other accessories for adults aNeonatal kit, P/N 64 06 487 E380E, isavailable. The kit includes an alternativeOperating Manual with Pre-use check,Calibration and Function check adapted forneonatal use.

2

Pre-use check

Preparations• Set all knobs as shown.

2

1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

0.2

0

21

30

40

5060

70

80

90

100

20

30

40

5060 70 80

90

100

110120

20

3040 50 60

70

80

90100

10

0

20 30

40

50

10

05

15

25

35

45

-16

-14

-12

-10-8 -6

-4

-2

0

0,5

1

2,5

5

8 1216

20

25

3040

01

2

34 5 6

8

9

7

10

0

5

1

15

20

25

30

10

202530

40 50

60

70

80

1020

304050

70 80 90100

110120130

140150

5

10

15

2025 30 35

4045

5055

60

5

10

1520

25

30

35

40

20

3040 50 60

70

80

90

100

10

0

0

2

4

6

8

10

12

14

16

18

20

-20

-10

0

10

20

30

40

50

60

70

80

90

100

SIEMENS Servo Ventilator 300 A

21

30

40

5060

70

80

90

100

30

40

5060 70 80

90

100

11012020

SIEMENS Servo Ventilator 300

40

60

0

40

-17

20

25

10

5 60

0

0

0.5

40

60

l/min

Adult

Pediatric

Neonate

Peak

Mean

Pause

End. Exp.

Upper press. limit



PEEP

CMV freq. b/min

Insp. time %

Pause time %

Insp. rise time %

Measured freq.b/min

Set freq.b/min

Insp. flow l/s

Volume

Airway press.cm H2O

Resp. pattern Volume

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml


Upper alarm limit

Alarm limits

Neonate 1/10

Lower alarm limit

Trig. sensitivityLevel below PEEP SIMV freq. b/min

MainsPressure Reg. Vol.Control/Support



Stand by


Volume Support

SIMV (Vol. Contr.)+Pressure Support



Optional

O2 conc. %


Oxygen breaths

Start breath

Alarms and messages

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

Reset

2 min

Insp.

Exp.

3000220E

On

Off

Support

Automode

Adult

Pediatric

Neonate

Peak

Upper press. limitAirway press.cm H2O

MainsPressure Reg.Volume Control

Volume Control

Pressure Control

Stand by


Volume Support




Optional

O2 conc. %


Oxygen breaths

Start breath

3

Pre-use check30

0-D

51X

300-

H54

X

• Assemble and connect the completepatient system which is to be used.

• Attach a test lung. Only a MAQUET testlung shall be used.

• Connect gas supply: Air and O2.

Note! If a humidifier is used it shall beinactive during the pre-use check.

• Connect the ventilator to mains.

• Make sure the yellow light at “Ventilatoroff Battery charging” and the green light“Mains” are lit.

• Open the lid on the patient unit.

O2

3000

265E

AIR

3000

266E Mains Ventilator off

Battery charging

4

Pre-use check30

0022

1X

Stand by

3000267E

1. Start up• Set the mode selector to “Stand by” and

make sure:

Alarms and messages

300-

D56

E

STAND BY

– the expiratory valve closes.

– the safety valve closes with a distinctclick.

– the “Alarms and messages” displayshows STAND BY.

These checks can be done separately byrepeated switching between “Ventilator offBattery charging” and “Stand by”.

• Close the lid on the patient unit.

– the back-up alarm (intermittent signals)is heard.

– all yellow lights are lit for a few seconds.

– all yellow and red lights in the “Alarmsand messages” section stay lit during anadditional moment.

– the caution signal is heard.

5

Pre-use check

2. Leakage testTest for leakage and pressure transducerintegrity


• Keep “Pause hold” at “Exp.” and makesure:

Pressure Control

3000268E


0

20 30

4010

5

15

25

35

450

500300-D62E

PEEP

Pause hold

Insp.

Exp.

Pause hold

Insp.

Exp.

300-D59E

XX

max

XX

XX-10

= =End. Exp.

3000342E

30sec.

– the “End exp.” display reading does notdrop more than 10 cm H

2O during the

exp. pause hold time (30 seconds).

– the diodes showing the actual pressureon the “Airway press.” bargraph show thesame value ±5 cm H

2O. If not, see

chapter Calibration. Note! The readingmay drop to zero for about 2 seconds dueto apnea alarm activation.

In case of leakage, check all connections inthe ventilator as well as in the patientsystem.

• Release “Pause hold”.

• Set “PEEP” to 0 cm H2O.

6

Pre-use check

3. Upper pressure limit alarm• Set “Pressure Control Level above PEEP”

to 30 cm H2O.

• At the alarm activation, make sure:

– the audible alarm is heard.

– the inspiration stops and expiration starts.

– the red light at “Airway pressure” in thealarm section lights up each time thealarm is activated.

– the yellow light at “Airway pressure” is litat the end of each alarm activation (whenthe red light at “Airway pressure” goesout).

– the “Alarms and messages” displayshows Airway pressure too high.

– the upper pressure limit indication on thebargraph flashes.

– the safety valve does not open. (if itopens, a distinct sound is heard and thePEEP-level drops to zero).

2030

40

5060 70 80

90

100

110120

===

3000344E

Upper press. limit

Peak

• Turn “Upper press. limit” slowly counter-clockwise and make sure upper pressurelimit alarm is activated when “Upperpress. limit” and the display “Peak” showthe same value. Accuracy: ±2 cm H

2O.

20

3040 50 60

70

80

90100

100

303000343E


Alarms and messages

Airwaypressure

3000

269E

Airway pressuretoo high

7

Pre-use check

• Set “Upper press. limit” to 60 cm H2O.

• Reset the alarm.

• Set “Pressure Control Level above PEEP”to 0 cm H

2O.

2030

40

5060 70 80

90

100

110120

60

3000375E

Upper press. limit

20

3040 50 60

70

80

90100

100

0

3000345E


Reset

2 min

300-D68E

Important: Proceed with the instructionson the inside of the front cover beforecontinuing the Pre-use check.

8

Pre-use check

4. Minute volume alarmsTest of minute volume alarms and flowtransducer integrity

• Set to “Volume Control” mode.

7.5

300-D71E


• Wait until the “Exp. minute vol. l/min”display reads 7.5 ±0.2 l/min.

7.5

Volume

3000346E

Minute vol.l/min

• Adjust “Volume” until the display “Minutevol. l/min” reads 7.5 l/min.

Volume Control

3000

270E Volume

Control/Support

9

Pre-use check

• Turn “Lower alarm limit” to 0 l/min.


Lower alarm limit

• Turn “Lower alarm limit” slowly clockwiseand make sure:

– the expired minute volume alarm isactivated when the lower alarm limitindication passes the measured minutevolume indication on the bargraph.



– the “Alarms and messages” displayshows Exp. minute volume too low.

– the red light at “Exp. minute volume”flashes.

– the lower alarm limit indication on thebargraph flashes.

– the lower alarm limit indication on thebargraph corresponds to the ”Lower alarmlimit” setting. Accuracy: ±0.5 l/min.

5

10

1520

25

30

35

40

0

2 min300-D74E

Lower alarm limit

Reset

6

8

5

10

1520

25

30

35

40

==

3000

271E

Alarms and messages

Exp. minutevolume

Lower alarm limit

Exp. minutevolume too low

5

10

1520

25

30

35

40

300-D72E

Lower alarm limit

10

Pre-use check

Upper alarm limit

• Turn “Upper alarm limit” slowly counter-clockwise and make sure:

– the expired minute volume alarm isactivated when the upper alarm limitindication passes the measured minutevolume indication on the bargraph.



– the “Alarms and messages” displayshows Exp. minute volume too high.


– the upper alarm limit indication on thebargraph flashes.

– the upper alarm limit indication on thebargraph corresponds to the ”Upper alarmlimit” setting. Accuracy: ±0.5 l/min.

5

10

15

2025 30 35

4045

5055

60

60

300-D76E

Upper alarm limit

Reset

2 min

6

8

=5

10

15

2025 30 35

4045

5055

60

=

300-

D83

E

Alarms and messages

Exp. minutevolume

Upper alarm limit

Exp. minutevolume too high


• Turn “Upper alarm limit” to 60 l/min.

5

10

15

2025 30 35

4045

5055

60

300-D75E

Upper alarm limit

11

Pre-use check

5. Apnea alarm• Set to “Volume Support” mode.

• Reset the alarm and make sure:

– the ventilator switches back from“Pressure Reg. Volume Control” to“Volume Support”.

3000275E

Volume Control


20 sec

3000273E

Alarms and messages


Volume Support

APNEA ALARM


• Wait for 20 seconds and make sure apneaalarm is activated.



– the “Alarms and messages” displayshows Apnea alarm.

– the ventilator changes from “VolumeSupport” to “Pressure Reg. VolumeControl” mode (indicated by flashingyellow light at “Pressure Reg. VolumeControl”).

2 min

3000274E


Volume Support

Reset


3000272E

Volume Support


12

Pre-use check

6. O2 alarmLower alarm limit

• Hold “Pause hold” at “Exp” and:

• Turn “O2 conc. %” clockwise and make

sure the O2 concentration alarm isactivated when the green display“O2 conc. %” reading is 6 ±1% higherthan the noted value.


– the red light at “O2 concentration” flashes.

– the display “Alarms and messages”shows O2 conc too low.

21

30

40

5060

70

80

90

100

XX+6%

3000

277E

O2 conc. %

O2 concentration

Alarms and messages

O2 conctoo low

– note the O2 concentration value on the

display “Alarms and messages”.

XX

3000279E

Alarms and messages

Pause hold

300-

D80

E

Insp.

Exp.

13

Pre-use check

• Set “O2 conc. %” to 40%.

Pause hold

300-

D85

E

Insp.

Exp.


21

30

40

5060

70

80

90

100

40 40

3000

278E

O2 conc. %

Upper alarm limit

• Hold “Pause hold” at “Exp.” and:


display “Alarms and messages”.

XX

3000276E

Alarms and messages

Pause hold

300-

D80

E

Insp.

Exp.

14

Pre-use check

• Turn “O2 conc. %” counter-clockwise and

make sure the O2 concentration alarm isactivated when the green display“O2 conc. %” reading is 6 ±1% lowerthan the noted value.


– the red light at O2 concentration flashes.

– the display “Alarms and messages”shows O2 conc too high.

21

30

40

5060

70

80

90

100

XX-6%

3000

280E

O2 conc. %

O2 concentration

Alarms and messages

O2 conctoo high

Pause hold

300-

D85

E

Insp.

Exp.


• Set “O2 conc. %” to 40%.

21

30

40

5060

70

80

90

100

40 40

3000

278E

O2 conc. %

15

Pre-use check

300-D88X

O2

7. Gas supply system• Disconnect the O

2 supply and make sure

Gas supply and O2 concentration alarms

are activated.



– the red light at “Gas supply” flashes.

– the red light at “O2concentration”

flashes.

300-

F75

E

Gas supply

O2 concentration

• Mute the alarm and make sure:

– the red display “Exp. minute vol. l/min”still shows the same value as the greendisplay “Minute vol. l/min”. Accuracy:±0.5 l/min.

=

=3000282E

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml


Reset

2 min

• Touch the touchpad at “Gas supply” andmake sure:

– the “Alarms and messages” displayshows O2 supply pressure too low.Air: X.X bar. O2: X.X bar.

300-

G70

E

Gas supply

Alarms and messages

O2 supply pressuretoo low.

Air:X.Xbar. O2:X.Xbar.

16

Pre-use check

300-D92X

O2

O2

AIR300-D93E

• Connect O2 supply.

• At the alarm activations, make sure:


– the red light at “O2 concentration” flashes.


• Wait a few breaths and then reset thealarms.

Reset

2 min

300-D68E

• Disconnect the air supply and make sureGas supply and O

2 concentration alarms

are activated.

300-

F75

E

Gas supply

O2 concentration

17

Pre-use check

300-D95X

O2 • Disconnect O2 supply so that no gas is

connected to the ventilator and makesure:


–the “Alarms and messages” displayshows Air supply pressure too low.Air: X.X bar. O2: X.X bar.



300-

F76

E

Gas supply

Alarms and messages

Air supply pressureto low.


=

=3000283E

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml


Reset

2 min

18

Pre-use check

O2

300-D96E AIR

• Reset the alarms.

Reset

2 min

300-D68E

300-

E03

X

– the safety valve opens with a distinctclick.

– the expiratory valve opens.

• Connect the air and O2 supplies.

AIR

19

Pre-use check30

0-D

97X

8. Battery operation• Disconnect the ventilator from mains and

make sure Battery alarm is activated.



– the red light at “Battery” flashes.

– the display “Alarms and messages”flashes BATTERY.

– the yellow light at “Ventilator off Batterycharging” and the green light “Mains” arenot lit.


– the caution signal starts.

– the yellow light at “Battery” is lit.

300-

D99

E

Alarms and messages

Battery

BATTERY

3000


Battery charging

300-E00E

Reset

Battery

20

Pre-use check30

0-D

51X

• To check the internal battery, touch thetouchpad at “Battery” and read thedisplayed value.(Normal value approx. 24 V.)

• Make sure:

– the yellow light at “Ventilator off Batterycharging” and the green light “Mains” arelit.

– the caution signal stops.

– the display “Alarms and messages” nolonger flashes BATTERY.

– the yellow light at “Battery” is no longerlit.

• Connect the ventilator to mains again.

XX V

3000

285E

Alarms and messages

Battery

3000

287E

Alarms and messages

Battery

3000


Battery charging

21

Pre-use check

3000216X-20

-10

9. Automode (SV 300A only)• Set “Automode” to “On”.

• Set “Trig sensitivity Level below PEEP” inthe green range.

• Compress and release the test lung twiceto trigger a breath. Two diodes on thebargraph for airway pressure show that abreath is triggered.

• Make sure the ventilator switches tosupport mode. This is shown by theyellow light “Support”.

-16

-14

-12

-10-8 -6

-4

-2

0

3000

215E


On

Off

Support

Automode

3000

217E

On

Of

Support

Automode

22

Pre-use check

10. Log sheet• Note on a log sheet that a pre-use check

has been performed.

• Do not trigger any more breaths andmake sure the ventilator switches back to“Volume Control” after about 12 seconds.(The yellow light “Support” is no longerlit.)

• Set “Automode” to “Off”.

• Set “Trig sensitivity Level below PEEP” to-17 cm H

2O.

300

0218

E

On

Of

Support

Automode

12 s

• The Pre-use check is now complete, setthe mode selector to “Stand by”, or, ifthe ventilator is to be connected to apatient, make the appropriate settings forthat patient.

-16

-14

-12

-10-8 -6

-4

-2

0

3000234E


On

Off

Support

Automode

-17

Stand by

3000288E

1

Troubleshooting

ContentsProblems detected before connectionof patient .................................................... 2

Problems detected with patientconnected .................................................. 6

This troubleshooting guide is divided intotwo sections:

• problems usually detected before youconnect the patient

• problems usually detected when thepatient is connected.

Note: Some of the problems may occur inboth cases and are therefore included inboth sections.

The suggestions made are onlyexamples of some symptoms andsolutions. The symptoms mentioned canbe caused by several other reasons.

2

Troubleshooting

Problems detected before patient connection

Note the error code “XXX”,take the unit out ofoperation and refer it toservice.

Check outlet.

Insert mains plug.

Switch on.

DO NOT change fusesyourself. Call aservice technician

Wall outlet fuse blown.

Mains plug not inserted.

Mains outlet switch off.

Fuses blown.

Problem Possible causes Remedy

Mains light not lit.

Self test message“Technical errorcode XXX”.

Leakage in patient circuit.

Leakage in ventilatorexpiratory side (internal).

Internal hardware problem.

Airway pressure fallsmore than 10 cm H2Oduring leakage test.(Insp. pause hold).

Perform leakage teststepwise (from inside andout):

1. Seal inspiratory outlet.

2. Connect one tube at atime directly from theinspiratory side to theexpiratory side.

3. Perform leakage testagain.

4. Check complete circuit.

If above fails, refer to aservice technician.

3

Troubleshooting

Faulty flow transducer.

Tubings disconnected.


Problem Possible causes RemedyExpired minute volumedisplay reads 0.

Replace flow transducer.

Reconnect.

Expired minute volumevalue differs from thatexpected during pre-usecheck.

Check all external partsassociated with the patientcircuit and expired minutevolume measurement.

If necessary, calibrate theventilator.

Leakage in test lung.

Loose connections.

Leakage in patient circuit.

Expiratory (internal) limb ofventilator not properlyinserted.

Ventilator uncalibrated.

PEEP/CPAP and/or plateaupressure cannot bemaintained.

Leakage in patient circuit ortest lung.

Check patient circuit andtest lung.

Perform leakage test.

CPAP pressure does notreach desired valueduring pre-use check.

Leakage in patient circuit ortest lung.

Check patient circuit andtest lung.

4

Troubleshooting



Display message:“O2 SENSOR”.

Oxygen sensor missing ordisconnected.

Check oxygen sensor andconnection.

Display message:“O2 conc too low”

Gas delivered in supplyline is not oxygen.

Oxygen sensor faulty orexhausted.

Oxygen cell uncalibrated.

Air/oxygen gas modulefaulty.

Check oxygen supply line.

Check oxygen sensor andinstitute a manualcalibration. If this does nothelp, refer unit to a servicetechnician.

Display message: “O2conc too high”

NOTE: If oxygen breathsare activated, no audiblealarm will be given duringand 1 minute after theoxygen breaths.

Oxygen is delivered inair supply line.

Oxygen sensor faulty.

Oxygen celluncalibrated.


Check air supply line.


5

Troubleshooting

Display message:

1. “BATTERY”.

2. “Limited battery capacity left”.

3.“No battery capacity left”.

NOTE: At 19,5V, gasmodules close and bothexpiratory and safetyvalves will open.


Display message: “Air/O2supply pressure toolow/high”

NOTE: The flow from themissing gas (air or O2) isautomaticallycompensated for so thatthe patient gets the presetvolumes and pressures.

NOTE: If no gas isavailable, the samemessage is shown withthe actual supplypressures.

Gas supply linedisconnected.

No supply from wall outlet.

Pressure in wall outlet is toolow/high while ventilator isrunning.

Either the air or O2 gas

module is disconnected.

NOTE: If no gas is available,then both expiratory andsafety valves will open.

Check and connect gassupply lines.

Check gas moduleconnections.

Call hospital technician tocheck supply and ifnecessary adjust supplypressures.


1. Use as normal until mainsis available.

1. Unit operating on battery.

2. Battery voltage below23 V.

2. 15 minutes capacity left.


3. Recharge battery byleaving the ventilatorplugged into mains.

Faulty internal power supply.

Display message:

“Internal battery voltagetoo high”

Take the unit out ofoperation and refer it toservice.

6

Troubleshooting

Problems detected with patient connected


Display message:“Expired minute volumetoo high”.

Increased patient activity.

Ventilator selftriggering(autocycling).

Improper alarm limit setting.

Wet flow transducer.

Check patient.

Check trigger sensitivitysetting.

Check alarm limit settings.

Dry the flow transducer.

Display message:

“Expired minute volumetoo low”.

Low spontaneous patientbreathing activity.

Leakage in the cuff.

Leakage in the patientcircuit.

Improper alarm limit setting.

Check patient.

Check cuff pressure.

Check patient circuit(perform leakage test ifnecessary).

Check pause time andgraphics to verify.

Consider more ventilatorysupport for the patient.

Expired minute volumedisplay reads 0.

Flow transducer faulty.

Circuit disconnected frompatient.

Replace flow transducer.

Connect Y-piece to patient.

Display message:“APNEA ALARM”

NOTE: If in VS, ventilatorwill revert to PRVC.Back-up rate and timemust be set.

Time between twoconsecutive inspiratoryefforts exceeds:

Adult: 20 sec.

Pediatric: 15 sec.

Neonate: 10 sec.

Check patient.

Check ventilator settings.

PEEP/CPAP and/or plateaupressure fails to bemaintained.

Leakage in cuff.

Leakage in the patientcircuit.

Improper alarm limitsetting.

Check cuff pressure.

Check patient circuit(perform leakage test ifnecessary).

Check pause time andgraphics to verify.

Consider more ventilatorysupport for the patient.

7

Troubleshooting



Display message:“Overrange: SelectPediatric/Adult”.

NOTE: Tidal volume andminute volume displayswill also flash if maximummeasurable volumes areexceeded.

Combination of settings ormonitored values exceedsthe allowable range for theselected patient range.

Display message:“Limited pressure”.

NOTE: This alarm is activeonly in the PRVC and VSmodes.

Kinked or blocked patienttubing.

Mucus or secretion plug inendotrachal tube or inairways.

Patient coughing or fightingventilator.

Improper alarm setting.

Patient’s lung/thoraxcompliance decreasing.

Patient’s airway resistanceincreasing.

Check patient.

Check ventilator settingsand alarm limits.

Check patient.

Check ventilator settingsand the monitored valuesand change the rangeaccordingly.

Display message: “Airwaypressure too high”

NOTE: If airway pressurerises 6 cm H2O above setupper pressure limit thesafety valve opens.

Safety valve also opens ifsystem pressure exceeds120 cm H2O.

Kinked or blocked patienttubing.

Mucus or secretion plug inendotrachal tube or inairways.

Patient coughing or fightingventilator.

Inspiratory flow rate toohigh.

Improper alarm setting.

Check patient.


8

Troubleshooting



Display message:

“High continuouspressure”.

Airway pressure is higherthan set PEEP plus15 cm H

2O for more than

15 seconds.

Check patient.

Check circuit.


Display message:“Check tubings”.

Disconnected pressuretransducer (expiratory).

Blocked pressuretransducer (expiratory).

Water in expiratory limb ofventilator.

Wet bacterial filter.

Clogged bacterial filter.

Check ventilator internals onexpiratory side.

Refer to service.

Replace filter.

Remove water from tubingand check humidifiersettings, i.e., relativehumidity.

Check heater wires inhumidifier (if present).

Display message:“O2 SENSOR”.

Indicates oxygen sensormissing or disconnected.

Check oxygen sensor andconnection and rerun selftest (turn ventilator to OFFand then to ON).

Display message:“O2 conc too low”

Gas delivered in supply lineis not oxygen.

Oxygen sensor faulty orexhausted.



Check oxygen supply line.


9

Troubleshooting



Display message:“O2 conc too high”

NOTE: If oxygen breathsare activated, no alarmwill be given during and1 minute after the oxygenbreaths.

Oxygen is delivered in airsupply line.

Oxygen sensor faulty.



Check air supply line.


Display message:

“Air/O2 supply pressuretoo low/high”

NOTE: The flow from themissing gas (air or O2) isautomatically com-pensated for so that thepatient gets the presetvolumes and pressures.

NOTE: If no gas isavailable, the samemessage is shown withthe actual supplypressures.

Gas supply linedisconnected.

No supply from wall outlet.

Pressure in wall outlet is toolow/high while ventilator isrunning.

Either the air or O2 gas

module is disconnected.

NOTE: If no gas is available,then both expiratory andsafety valves will open.

Check and connect gassupply lines.

Check gas moduleconnections.

Call hospital technician tocheck supply and ifnecessary adjust supplypressures.

1. Unit operating on battery.



1. Use as normal untilmains is available.

2. 15 minutes capacity left.

3. Recharge battery byleaving the ventilatorplugged into mains.

Display message:

1. “BATTERY”.

2. “Limited batterycapacity left”.

3. “No batterycapacity left”.

NOTE: At 19,5V, gasmodules close and bothexpiratory and safetyvalves will open.

10

Troubleshooting


Display message:

“Internal battery voltagetoo high”


Faulty internal power supply. Take the unit out ofoperation and refer it toservice.

Note the error code “XXX”,take the unit out ofoperation and refer it toservice.

Self test messageTechnical error code XXX

Internal hardware problem.

1

Quick exchange of expiratory channel

ContentsDismantling ................................................ 2

Assembling ................................................ 4

Log sheet ................................................... 5

2

Quick exchange of expiratory channel30

0-E

22X

300-

E22

X

O2

3000

289E

AIR

• Set the mode selector to “Ventilator offBattery charging”.

• Disconnect the ventilator from mains andgas.

• Remove all accessories.

• Open the lid on the pneumatic unit.

To be able to use the ventilator to thegreatest extent MAQUET recommends that acomplete, cleaned expiratory channel isalways kept available. Thus the exchangeand pre-use check can be made quicklybetween patients, and the exchanged partscan be cleaned when convenient.

If the expiratory channel has been calibratedin another ventilator, make sure the minutevolume reading is correct (see Function checkpp 12-13).

Dismantling

3


300-E25X

300-

F09

X30

0-F

08X

300-

F09

X30

0-F

08X

300-E25X

• Disconnect the flow transducerconnector.

• Press the spring to open the expiratoryvalve.

• Loosen the bacteria filter.

4

Quick exchange of expiratory channel30

0-F

10X

300-

F11

X30

0-F

12X

300-

F11

X30

0-F

10X

300-

F12

X

• Lift the entire expiratory channel upward.For cleaning instructions, see chapterRoutine cleaning.

• Connect the flow transducer connector.

Assembling• Make sure:

– the new expiratory channel is correctlyassembled.

– the numbers on the flow transducer andthe preamplifier correspond.

– the number on the flow transducer labelcorresponds to the serial number on theventilator.

• Put the expiratory channel in place.

5


300-E38X

300-

E40

X

300-E38X

300-

E40

X

• Carry out a pre-use check.

Log sheet• Sign on a log sheet that the expiratory

channel has been exchanged. Note also inthe log sheet the number on the flowtransducer.

• Connect the bacteria filter.

• Make sure the expiratory valve tube is notbent or twisted.

• Close the expiratory valve.

1

Routine cleaning

HygieneThe gas which passes the ventilator’sinspiration system also passes a bacteriafilter and is usually clean and dry.The dry environment within the ventilatorsystem gives unfavorable conditions forbacterial growth, and bacteria spreadingagainst the gas flow is consideredvirtually impossible.Bacteria from the patient will appear inthe moist environment of the expiratoryside. By attaching a disposable bacteriafilter to the expiratory inlet of theventilator, the transmission of bacteria tothe expiratory channel and out into theroom is reduced. This reduces the risk ofinfections being spread to the staff aswell as cross infections betweenpatients. The bacteria filter should bereplaced according to manufacturerrecommendations.Exchange or cleaning of patient tubes,cleaning of the expiratory channel, andthe exchange of expiratory pressure

transducer bacteria filter arerecommended after each patient oraccording to the hospital routines.The gas conveying parts of the expirationsystem can be decontaminated andsterilized.The expiratory valve, the bacteria filterwith tube and nipple for the expiratorypressure transducer and the mesh net inthe expiratory flow transducer shall bereplaced after every 1000 hours ofoperation.The parts of the inspiratory system shallbe sterilized, and the bacteria filtersreplaced after every 3000 hours ofoperation or within one year, whicheveroccurs first.All personnel should be aware of the riskof parts being infected whendisassembling and cleaning theventilator.All disposable parts shall be discardedaccording to hospital rules and in anenvironmentally safe way.

ContentsDismantling ................................................ 2

Cleaning ..................................................... 5

Assembling ................................................ 8

Log sheet ................................................. 10

2

Routine cleaning

300-E21X

300-

E22

X

O2

3000

290E

AIR

These instructions apply when the sameexpiratory channel is to be cleaned and thenput back in the same ventilator.

Dismantling• Set the mode selector to “Ventilator off

Battery charging”.

• Disconnect the ventilator from mains andgas supply.


• Wipe the outside of the ventilator with asoft cloth moistened in a disinfectant.


3

Routine cleaning30

0-E

24X

300-E25X

300-

F10

X

• Lift the entire expiratory channel upward.



4

Routine cleaning30

0-E

23X

300-

E27

X

• Dismantle the parts.

• Discard the bacteria filter with tube andnipple.

• Disconnect the flow transducer from itsamplifier.

5

Routine cleaning

CleaningFlow transducer

• Let the flow transducer lie in a 70%alcohol solution for about one hour.

The flow transducer is a precisioninstrument and must be handled carefully.The metal disc in the small channel of thetransducer is very fragile and may break ifit is handled carelessly.Do not poke at the metal disc in thetransducer channel.Do not flush the channel with water.The flow transducer must not be cleanedin a dish washing machine, by ultra-soundor by using agents which containaldehydes.

ALCOHOL

1 HOUR

300-E28E

Solutions other than alcohol may causedisturbances in the function of the flowtransducer.If an agent other than alcohol is used,the cleaning routine should be carriedout according to the instructions of therespective manufacturer.The agents used for cleaning anddisinfection must have a pH between4 and 8.5.

6

Routine cleaning30

0-E

30X

• If a solution other than alcohol is used,rinse the solution from the flowtransducer by carefully moving it to andfro in a bowl of distilled water.

• Let the water run off the transducer afterrinsing.

WATER

300-

E29

E

7

Routine cleaning

Other parts

• Soak the other parts in a disinfectant forabout one hour.

• Rinse the parts in water.

300-E31E

DISINFECTANT

1 HOUR

300-E32E

WATER

AUTOCLAVE MAX 150o C (300o F)

300-E33E

• Autoclave all parts, including the flowtransducer, at a maximum temperature of150°C (300°F).

Note! Do not autoclave the flow transduceramplifier with cable!

8

Routine cleaning

NEW

300-

E36

X30

0-E

34X

300-

E35

X

Assembling• Make sure the fine mesh net in the

transducer is not blocked or damaged andthe disc in the small channel is in position.

• Assemble the expiratory channel with anew bacteria filter with tube and nipple.

• Make sure the non-return valve is inposition in the expiratory outlet.

9

Routine cleaning30

0-E

39X

XXX

XXX

A

300-E38X

300-

E37

X

• Connect the flow transducer amplifier andmake sure:

– the numbers on the flow transducer andthe amplifier correspond.

– the serial number on the amplifier label(A) corresponds to the serial number onthe SV 300/SV 300A.

• Put the complete expiratory channel inplace.

• Make sure the expiratory valve is not bentor twisted.


10

Routine cleaning30

0-E

40X

Log sheet• Note on a log sheet that a routine

cleaning has been performed.

• Attach patient tubes and necessaryaccessories.

• Check the ventilator as described inchapter Function check.


1

1000 hour overhaul

Contents

Disposable parts ........................................ 2

Dismantling ............................................... 2

Assembling ................................................ 5

Log sheet .................................................. 6

All personnel should be aware of therisk of parts being infected whendisassembling and cleaning theventilator.Make sure the parts that have been incontact with the patient´s expiratorygas are clean before any other work,e.g., repair, exchange of parts, etc, isstarted.All disposable parts shall be discardedaccording to hospital rules and in anenvironmentally safe way.

2

1000 hour overhaul30

0-E

41X

300-

E22

X




Disposable parts

Only spare parts from MAQUET shall beused.

• Bacteria filter with 13 cm tube and nipplefor expiratory pressure transducer.

• Expiratory valve tube.

• Mesh net, including screw, for expiratoryflow transducer.


O2

3000

291E

AIR

Dismantling

3


0-E

24X

300-E25X

300-

E26

X




4


0-E

43X

300-

E23

X

• Dismantle the expiratory channel anddiscard the expiratory valve tube and thebacteria filter with tube and nipple.


5


0-E

39X

XXX

XXX

A

NEW

300-

E45

X

NEW

300-

E44

X

Assembling

• Replace the mesh net in the flowtransducer as follows:

– remove the screw,

– take out the mesh net,

– insert and secure the new mesh net.

• Assemble the expiratory channel.The following items should be new:

– expiratory valve tube.

– bacteria filter with 13 cm tube andnipple.

– mesh net in the expiratory flowtransducer.

• Connect the flow transducer amplifier andmake sure:



If the expiratory channel has been calibratedin another ventilator, make sure the minutevolume reading is correct (see Functioncheck pp 12-13).

6


0-E

37X

300-

E40

X

300-E38X

Log sheet

• Note on a log sheet that a 1000 houroverhaul has been performed.

• Make sure the complete expiratorychannel is correctly assembled, then putin place.

• Carry out a pre-use check.


• Make sure the expiratory valve is not bentor twisted.


1

3000 hour overhaul with complete cleaning

ContentsDisposable parts ........................................ 2

Equipment .................................................. 2

Preparations ............................................... 3

Gas modules .............................................. 4

Dust filter ................................................... 8

Dismantling ................................................ 9

Cleaning ................................................... 13

Assembling .............................................. 16

Log sheet ................................................. 20

The internal battery shall bereplaced every 3 years. Seeinstructions in the ServiceManual. An old non-functioning

battery must be returned to the place ofpurchase or to a place where it can bedisposed of properly. The battery mustnot be disposed of with ordinary waste.All disposable parts shall be discardedaccording to hospital rules and in anenvironmentally safe way.All personnel should be aware of therisk of parts being infected whendisassembling and cleaning theventilator.Make sure the parts that have been incontact with the patient´s expiratorygas are clean before any other work,e.g., repair, exchange of parts, etc, isstarted.

2


��

Disposable partsOnly spare parts from MAQUET shall beused.

Bacteria filters:

• 2 for gas modules.

• 1 for inspiratory pressure transducer.

• 1 with 13 cm tube and nipple forexpiratory pressure transducer.

• 1 for O2 cell.

Other items:

• Expiratory valve tube.

• Mesh net, including screw, for expiratoryflow transducer.

Equipment• Screwdriver.

• Hexagonal wrench 5 mm.

• 2 diaphragms for gas modules.

• 2 O-rings for gas modules.

• 2 complete plastic nozzle units

* for gas modules with metal nozzle units

*

3


300-E21X

• Wipe the outside of the ventilator with asoft cloth moistened in a disinfectant.

Preparations• Set the mode selector to “Ventilator off

Battery charging”.



O2

3000

292E

AIR

4

3000 hour overhaul with complete cleaning30

0-E

22X

300-

E47

X

Gas modules• Open the lid on the patient unit.

Make sure the ventilator isdisconnected from mains and the modeselector is in position “Ventilator offBattery charging” before the gasmodules are removed.

• Remove the plastic screw on gas moduleAIR.

• Press the hatch and pull the module out.

5


0-E

48X

NE

W

300-

E49

X

• Unscrew the two screws on the coverwith a hexagonal wrench. Open themodule and take the bacteria filter out.

• Remove and save the rubber sealing forthe bacteria filter.

• Discard the bacteria filter.

• Put the rubber sealing on the newbacteria filter.

• Put the new bacteria filter in the lid andtighten the gas module.

6


0-E

50X

NEW

300-

E52

X

Gas modules1. With metal nozzle units

• Open the hatch and remove the nozzleunit.

• Exchange the O-ring and the diaphragm.

Note! Do not use any sharp tool thatmay damage the valve seats.

2. With plastic nozzle units

• Open the hatch and exchange thecomplete nozzle unit.

7


0-E

53X

300-

E54

X

• Repeat the procedure for the gas moduleO

2.

Note! Wait 10 minutes beforeconnecting pressure to the gasmodules.

• Put the nozzle unit back and close thehatch.

• Put the gas module back in the ventilatorand make sure the hatch snaps into place.

• Tighten the screw.

8


300-E55X

300-E57X

300-

E56

X

Dust filter• Remove the filter.

Do not direct the flow of compressedair toward the eyes or other unprotectedparts of the body.

• Use compressed air to blow the filterclean. If compressed air is not available,the filter can be cleaned in water.

• Put the filter back.

9


0-E

24X

300-E25X

300-

E26

X

DismantlingExpiratory channel




10


0-E

23X

300-

E43

X


• Dismantle the parts.

• Discard the expiratory valve tube and thebacteria filter with tube and nipple.

11


300-E59X

300-

E58

X

Inspiratory channel

• Remove the O2 cell from the inspiratory

pipe.

• Press the hatch and lift the inspiratorypipe upward.

12


0-E

61X

300-

E62

X30

0-E

60X

• Remove and discard the bacteria filter forthe O

2 cell.

• Loosen the bacteria filter from its seatand remove the inspiratory mixing part.

• Remove and discard the bacteria filter.

13


CleaningFlow transducer

The flow transducer is a precisioninstrument and must be handled carefully.The metal disc in the small channel of thetransducer is very fragile and may break ifhandled carelessly.Do not poke at the metal disc in thetransducer channel.Do not flush the channel with water.The flow transducer must not be cleanedin a dish washing machine, by ultra-soundor by using agents which containaldehydes.

Solutions other than alcohol may causedisturbances in the function of the flowtransducer.If an agent other than alcohol is used, thecleaning routine should be carried outaccording to the instructions of therespective manufacturer.The agents used for cleaning anddisinfection must have a pH between 4and 8.5.

• Let the flow transducer lie in a 70%alcohol solution for about one hour.

ALCOHOL

1 HOUR

300-E28E

14


0-E

30X

WATER

300-

E29

E

3000378E

DISINFECTANT

1 HOUR

• If a solution other than alcohol is used,rinse the solution from the flowtransducer by carefully moving it to andfro in a bowl of distilled water.

Other parts

• Soak the other parts in a disinfectant forabout one hour.

• Let the water run off the transducer afterrinsing.

15


3000379E

WATER

AUTOCLAVE MAX 150o C (300o F)

3000380E

• Rinse the parts in water.

• Autoclave all parts, including the flowtransducer, at a maximum temperature of150°C (300°F).

Note! Do not autoclave the flow transduceramplifier with cable!

16


NEW

300-

E45

X

NEW

300-

E44

X

• Assemble the expiratory channel. Thefollowing items should be new:

– expiratory valve tube.

– bacteria filter with 13 cm tube andnipple.

– mesh net in flow transducer.

AssemblingExpiratory channel

• Replace the mesh net in the flowtransducer as follows:

– remove the screw,

– take out the mesh net.

– insert and secure the new mesh net.

17


0-E

39X

XXX

XXX

A

300-E38X

300-

E37

X

• Connect the flow transducer amplifier.Make sure:



If the expiratory channel has been calibrated inanother ventilator, make sure the minutevolume reading is correct (see Function checkpp 12-13).

• Make sure the expiratory valve is notbent or twisted.


• Put the complete expiratory channel inplace.

18


0-E

40X

300-

E66

X30

0-E

67X

Inspiratory channel

• Connect a new bacteria filter to theinspiratory mixing part. Make sure thefilter is inserted correctly and well into theinspiratory mixing part. See picture.


• Put the inspiratory mixing part in positionand connect the bacteria filter.

19


0-E

70X

300-

E68

X30

0-E

69X

• Put the inspiratory pipe in position.

• Make sure the hatch locks.

• Insert a new bacteria filter for the O2 cell.

• Connect and put the O2 cell with O-ring in

position.

• Close the O2 cell holder.

20


Calibration and functioncheck• Calibrate and check the ventilator as

described in chapters Calibration andFunction check.

Log sheet• Note on a log sheet that a 3000-hour

overhaul has been done.

1

Exchange of O2 cell

ContentsPreparations ............................................... 2

Replacement .............................................. 2

Calibration .................................................. 4

Log sheet ................................................... 6

The sealed unit contains a caustic liquidwhich may cause severe burns to skinand eyes. In case of contact,immediately flush with plenty of waterfor at least 15 minutes. For eyes, getmedical attention.

2

Exchange of O2 cell30

0-E

22X

O2

3000

293E

AIR

Replacement• Open the lid on the patient unit.


• Disconnect the ventilator from mains andgas.


Preparations• Unpack the O

2 cell at least 30 minutes

before replacement.

300-

E20

E

3


0-F

14X

1

2 3

An old non-functioning O2 cell

must be returned to the place ofpurchase or to a place where itcan be disposed of properly. The

O2 cell must not be disposed of with

ordinary waste.

• Open the O2 cell holder.

• Take the old O2 cell out of the holder.

• Disconnect the connector from the O2 cell.

• Discard the old O2 cell.

4


0-F

16X

1

23

300-

F17

X

15 MIN

• Put a new O2 cell with O-ring in the

holder.

• Make sure the O-ring is not damaged andis in position.

• Connect the connector to the new O2 cell.

• Close the O2 cell holder.

Calibration• Connect mains. Let the ventilator run for

about 15 minutes.

5

Exchange of O2 cell

• Set “O2 conc.%” to 21%.

21

30

40

5060

70

80

90

100

2121

3000

295E

O2 conc. %

3000294E

Volume Control

VolumeControl/Suppor t

• Touch the “O2 concentration” touchpad

and make sure:– the display “Alarms and messages”

shows 20.9%. If not, adjust withtrimmer 5 (O

2% ).

02 20.9 %

5

3000

296E

Alarms and messages

O2 concentration

• Set the mode selector to “VolumeControl”.

6

Exchange of O2 cell

• A fine-adjustment of the calibration maybe necessary after a few hours ofoperation when the O2 cell has reachedthe same working temperature as theventilator.

Log sheet• Note on a log sheet that the O

2 cell has

been exchanged.

1

Calibration

Contents

Equipment ................................................. 2

Use of touch pads ..................................... 3

Trimmer location ........................................ 4

Preparations ............................................... 4

Settings for calibration ............................... 5

Balancing of pressure transducers............. 6

Balancing of expiratory flow transducer ..... 7

Leakage test, patient unit .......................... 7

Pressure calibration ................................. 10

Check of inspiratory flow ......................... 14

O2 concentration calibration ..................... 18

Leakage test of patient tubesand test lung ............................................ 19

Expiratory flow calibration ....................... 20

Log sheet ................................................. 22

The maximum time interval betweencalibrations is 3000 hours of operation.If any malfunction is detected during thecalibration procedure, the ventilator shallnot be connected to patient beforeremedy of malfunction. The malfunctionshall be remedied by local technicalstaff trained by Siemens or a servicetechnician from Siemens.In the Servo Ventilator 300/SV 300A flowmeasurements and all preset andindicated volumes are referenced tostandard pressure (1013 mbar,760 mm Hg).


2

Calibration30

0-E

71X

Equipment

• Calibration manometer.

• Screwdriver.

• 2 patient tubes, adult.

• Y-piece.

• Test lung. Only a Siemens test lung shallbe used.

• Gas supply: Air and oxygen.

3

Calibration

Use of touchpads

To get information on the “Alarms andmessages” display during calibration, usethe touchpads as follows:

Put fingers simultaneously on the “Airwaypressure” and “Technical” touchpads.

E: display mode

First touch gives the E: display mode wherethe pressure at the expiratory pressuretransducer is shown.

I: display mode

Second touch gives the I: display modewhere the pressure at the inspiratorypressure transducer is shown.

Barometer display mode

Third touch gives the Barometer displaymode where the internally measuredbarometric pressure in mbar or mm Hg isshown.

Selection of the displayed unit (mbar ormm Hg) is described in the Service Manual,chapter Adjustments.

Normal display mode

Fourth touch brings back normal displaymode. Normal display mode will alsoautomatically be back after one minute.

I: XX

E: XX

XXXX

XXXX

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

3000297E

Alarms and messages

Alarms and messages

Alarms and messages

Alarms and messages

4

Calibration

Preparations

• Connect the ventilator to mains.

Note! Do not connect patient tubes or gassupply to the ventilator.

• Set the mode selector to “Stand by” andallow at least 15 minutes for warming up.


Trimmer location

1. Inspiratory pressure transducer, zero(Pinsp ).

2. Inspiratory pressure transducer, gain(Pinsp ).

3. Expiratory pressure transducer, gain(Pexp ).

4. Expiratory pressure transducer, zero(Pexp ).

5. O2 % gain,(O2 % ).

6. Expiratory flow transducer, gain(Vexp ).

7. Expiratory flow transducer balance,(Vexp ).

8. Light emitting diode.

Each trimmer is protected by a plasticcover. Lift the cover to get access to thetrimmer.

Stand by

3000298E

5

Calibration

Settings for calibration

• Set the front panel controls as shown.

Alarms activated during calibration can bemuted with the “ 2 min” control.

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6

Calibration

Expiratory pressure

• Use the touchpads to get into E: displaymode.

• Check that the display “Alarms andmessages” shows E: 0.0 ±0.1 cm H2O

• If not, adjust trimmer 4 (Pexp ) to correctreading.

Inspiratory pressure

• Use the touchpads to get into I: displaymode.

• Check that the display “Alarms andmessages” shows I: 0.0 ±0.1 cm H2O.

• If not, adjust trimmer 1 (Pinsp ) tocorrect reading.

Balancing of pressuretransducers


I: 0.0

1

3000

302E

Alarms and messages


3000300E

Pressure Control

E: 0.0

4

3000

301E

Alarms and messages

7

Calibration

7

3000382X

300-

E79

X

O2

300-E78E AIR

Balancing of expiratory flowtransducer

• Open the lid on the expiratory flowamplifier.

• Check that the green diode is lit.

• If not, adjust trimmer 7 (Vexp ) until thediode is lit.

• If the left and right diode, showing theactual pressure on the “Airway press.”bargraph, differ less than 5 cm H2O fromeach other, go directly to page 9.

Leakage test, patient unit

• Connect gas supply (air and O2). Thesafety valve will close when gas supply isconnected.

• Connect the calibration manometer to theexpiratory inlet and connect the inspiratoryoutlet and the calibration manometer witha patient tube.

300-E78E

8

Calibration30

0-E

80X

340

40

Pexp

Pexp

300-

E81

X

2

Pinsp

Pinsp

• If the left diode on the “Airway press.”bargraph (actual insp. pressure) shows:

– a lower value than the right (actual exp.pressure), adjust trimmer 2 (Pinsp )clockwise

– a higher value than the right (actual exp.pressure), adjust trimmer2 (Pinsp ) counter-clockwise.

If not, the following preliminary calibrationsmust be made (normally, this will not benecessary):

• Check the calibration manometer reading.

• If the calibration manometer

continuously shows:

– a value higher than 40, adjust trimmer 3(Pexp ) clockwise

– a value lower than 40, adjust trimmer 3(Pexp ) counter-clockwise.

9

Calibration


– the reading on the display “End exp.”does not fall more than 4 cm H2Oduring the expiratory pause hold time(30 seconds).Note! The reading may drop to zero forabout 2 seconds due to apnea alarmactivation.

Pause hold

300-

D80

E

Insp.

Exp.

XX

max

XX

XX-4

=3000347E

End. Exp.

30sec.

• Release “Pause hold”.Pause hold

300-

D85

E

Insp.

Exp.

10

Calibration

300-E83X

Pressure calibration

Expiratory pressure

• Connect patient tubes, Y-piece and testlung.

1020

304050

6070 80 90

100110120130

140150

150

CMV freq. b/min

3000348E

• Set “CMV freq. b/min” to 150 b/min.

40

300-E85E

Alarms and messages

E: 40.0

• Make sure:

– the display “Alarms and messages”shows 40.0 ±0.5 cm H2O in E: displaymode.

– the right diode (actual exp. pressure) onthe “Airway press.” bargraph shows40 cm H2O.

11

Calibration

40

3

300-

E87

X

50

20 30

40

50

10

05

15

25

35

45

300-E86E

PEEP• If not, adjust to correct reading with

“PEEP”.

• Make sure the calibration manometershows 40 cm H2O.

• If not, adjust trimmer 3 (Pexp ) tocorrect reading.

12

Calibration

2

300-

E89

X

Inspiratory pressure

• Make sure:

– the display “Alarms and messages”shows 40.0 ±0.5 cm H2O in I: displaymode.

– the left diode (actual insp. pressure) onthe “Airway press.” bargraph shows40 cm H2O.

40

300-E88E

Alarms and messages

I: 40.0

• If not, adjust trimmer 2 (Pinsp ) tocorrect reading.

13

Calibration


• Set “CMV freq. b/min” to minimum.

1020

304050

6070 80 90

100110120130

140150

CMV freq. b/min

3000349E

0

20 30

4010

5

15

25

35

450

500300-G69E

PEEP

14

Calibration

Check of inspiratory flow

Air flow

• Remove the patient tubes and test lungand move the calibration manometer to theinspiratory outlet.

• Set the patient range selector to “Adult”.


Volume Control


15

Calibration

• Adjust “Volume” until the display “Insp.flow l/s” shows 0.50 l/s.

• Use the touchpads to get into Barometermode.

• Read the barometric pressure on the“Alarms and messages” display.

• In the table find the Barometric pressure

value closest to the displayed value.

• Wait 6 - 8 breaths.

• During inspiration, check that thecalibration manometer reading is equal tothe Calibration manometer reading

value in the table ±5 cm H2O.

0.50Insp. flow l/s

Volume

3000351E

Barometricpressure

mbar mm Hg

700 525 65720 540 64740 555 62760 570 60780 585 59800 600 57820 615 56840 630 54860 645 53880 660 52900 675 51920 690 50940 705 49960 720 48980 735 471000 750 461013 760 451020 765 451040 780 441060 795 431080 810 421100 825 42

Calibrationmanometer reading

cm H2O

16

Calibration

O2 flow

• Set “O2 conc. %” to 100%.

• Use the touchpads to get into Barometermode.

• Read the barometric pressure on the“Alarms and messages” display.

• In the table find the Barometric pressure

value closest to the displayed value.

• Wait 6 - 8 breaths.

• During inspiration, check that thecalibration manometer reading is equal tothe Calibration manometer reading

value in the table ±5 cm H2O.

21

30

40

5060

70

80

90

100

100 100

3000

304E

O2 conc. %

0.50Insp. flow l/s

Volume

3000305E

• Make sure the display “Insp. flow l/s” stillshows 0.50 l/s. If not, adjust “Volume” tocorrect reading.

Barometricpressure

mbar mm Hg

700 525 73720 540 71740 555 69760 570 67780 585 66800 600 64820 615 62840 630 61860 645 60880 660 58900 675 57920 690 56940 705 55960 720 53980 735 521000 750 511013 760 511020 765 501040 780 491060 795 481080 810 471100 825 47

Calibrationmanometerreading

cm H2O

17

Calibration30

0-E

98X


• Remove the calibration manometer.

• Make sure “Upper press. limit” is set to60 cm H2O.

21

30

40

5060

70

80

90

100

21 21

3000

306E

O2 conc. %

2030

40

5060 70 80

90

100

110120

60

3000352E

Upper press. limit

18

Calibration30

0-F

00X

5

300-

F00

X

5

O2 concentration calibration

• If O2 concentration alarm is active, turntrimmer 5 (O2 % ) until the alarmstops.

• If not, adjust with trimmer 5 (O2 % ).


• Touch the “O2 concentration” touchpadand check that the display “Alarms andmessages” shows 20.9 ±0.1%.

Reset

2 min

300-D68E


3000307E

AirwayPressure

O2 concentration

19

Calibration

Leakage test of patienttubes and test lung

• Connect patient tubes, Y-piece and testlung.

500

20 30

4010

5

15

25

35

4540

PEEP

300-F59E

1020

304050

6070 80 90

100110120130

140150

20

CMV freq. b/min

3000353E

• Set “CMV freq. b/min” to 20 b/min.

Pressure Control

3000308E




O2

300-F03E AIR

20

Calibration


– the reading on the display “End exp.”does not fall more than 10 cm H2Oduring the expiratory pause hold time(30 sec).

In case of leakage, exchange the patienttubes/test lung before continuing thecalibration.

Expiratory flow calibration


7.53000354E

Minute vol.l/min

Volume

• Adjust “Volume” until the green display“Minute vol. l/min” shows 7.5 l/min.

3000309E

Volume Control



0

20 30

4010

5

15

25

35

450

500300-G69E

PEEP

Pause hold

300-

D80

E

Insp.

Exp.

21

Calibration30

0-H

62X

6

300-

F05

X

• If not, adjust trimmer 6 (Vexp ) tocorrect reading.

• Wait a few breaths, then check that thered display “Exp. minute vol. l/min”shows7.5 ±0.1 l/min.

7.5

300-D71E


• Close the lid on the flow amplifier.

22

Calibration30

0-F

07X

• Make sure all plastic covers over trimmersare closed.

• Check the ventilator as described inchapter Function check.

Log sheet

• Note on a log sheet that a calibration hasbeen performed.

1

Function check

ContentsEquipment .................................................. 2

Preparations ............................................... 2

1. Start up .................................................. 4

2. Leakage test .......................................... 6

3. Pressure levels ....................................... 8

4. Trigger function ...................................... 9

5. Upper pressure limit alarm................... 10

6. Tidal and minute volumes .................... 12

7. Minute volume alarms ......................... 14

8. Check of “Neonate” range .................. 18

9. Check tubings alarm ............................ 20

10. Apnea alarm ....................................... 22

11. Safety valve ........................................ 23

12. O2 alarm ............................................. 24

13. Gas supply system............................. 26

14. Battery operation ............................... 30

15. Automode (SV 300A only) .................. 33

16. Log sheet ........................................... 34


A complete function check must be doneafter cleaning and after calibration (beforethe ventilator is connected to a patient).If any malfunctions are detected duringthe function check, the ventilator mustnot be connected to patient beforeremedy of malfunction. The malfunctionmust be remedied by local technicalstaff trained by MAQUET or a servicetechnician from MAQUET.

2

Function check��

��

��

��

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Equipment• 2 patient tubes.

• Y-piece.

• Test lung. Only a MAQUET test lung shallbe used.

• Gas supply: Air and O2.

15 MIN

Stand by

3000310E

• Set the mode selector to “Stand by”.Allow a warm-up period of at least 15minutes.

Preparations• Connect the ventilator to mains.

3

Function check

O2

300-

F22E

AIR

300-

F22

E

• Connect gases.

2

1.8

1.6

1.4

1.2

1

0.8

0.6

0.4

0.2

0

21

30

40

5060

70

80

90

100

20

30

40

5060 70 80

90

100

110120

20

3040 50 60

70

80

90100

10

0

20 30

40

50

10

05

15

25

35

45

-16

-14

-12

-10-8 -6

-4

-2

0

0,5

1

2,5

5

8 1216

20

25

3040

01

2

34 5 6

8

9

7

10

0

5

1

15

20

25

30

10

202530

40 50

60

70

80

1020

304050

70 80 90100

110120130

140150

5

10

15

2025 30 35

4045

5055

60

5

10

1520

25

30

35

40

20

3040 50 60

70

80

90

100

10

0

0

2

4

6

8

10

12

14

16

18

20

-20

-10

0

10

20

30

40

50

60

70

80

90

100

SIEMENS Servo Ventilator 300A

21

30

40

5060

70

80

90

100

30

40

5060 70 80

90

100

11012020

SIEMENS Servo Ventilator 300

40

60

0

40

-17

20

25

10

5 60

0

0

0.5

40

60

l/min

Adult

Pediatric

Neonate

Peak

Mean

Pause

End. Exp.

Upper press. limit



PEEP

CMV freq. b/min

Insp. time %

Pause time %

Insp. rise time %

Measured freq.b/min

Set freq.b/min

Insp. flow l/s

Volume

Airway press.cm H2O

Resp. pattern Volume

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml


Upper alarm limit

Alarm limits

Neonate 1/10

Lower alarm limit

Trig. sensitivityLevel below PEEP SIMV freq. b/min

MainsPressure Reg. Vol.Control/Support



Stand by


Volume Support




Optional

O2 conc. %


Oxygen breaths

Start breath

Alarms and messages

AirwayPressure

O2 concentration

Exp. minutevolume

Apnea

Gas supply

Battery

Technical

Reset

2 min

Insp.

Exp.

3000311E

On

Off

Support

Automode

Adult

Pediatric

Neonate

Peak

Upper press. limitAirway press.cm H2O

MainsPressure Reg.Volume Control

Volume Control

Pressure Control

Stand by


Volume Support




Optional

O2 conc. %


Oxygen breaths

Start breath

Insp. period s.


• Set all knobs as shown.

AIR

4


��

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1. Start up• Make sure the yellow light at “Ventilator off

Battery charging” and the green light“Mains” are lit.

3000


Battery charging

• Set the mode selector to “Stand by” andmake sure:

Stand by

3000313E

– the back-up alarm (intermittent signals)is heard.

– all yellow lights are lit for a few seconds.

– all yellow and red lights in the “Alarmsand messages” section stay lit during anadditional moment.

– the caution signal is heard.

5

Function check

Alarms and messages

300-

D56

E

STAND BY

– the expiratory valve closes.

– the safety valve closes with a distinctclick.

– the “Alarms and messages” displayshows STAND BY.

These checks can be done separately byrepeated switching between “Ventilator offBattery charging” and “Stand by”.

6

Function check

��

��

2. Leakage testTest for leakage and pressure transducerintegrity

• Connect a patient tube between theinspiratory outlet and the expiratory inlet.


• Make sure:

– the diodes showing the actual pressureon the “Airway press.” bargraph showthe same value ±5 cm H

2O. If not, see

chapter Calibration. Note: The diodes canbe hidden behind the diodes showing theset PEEP level.

Pressure Control

3000315E


• Set the patient range selector to“Neonate”.

3000368E

Adult

Pediatric

Neonate

7

Function check

��

Pause hold

Insp.

Exp.

300-D59E

XX

max

XX

XX-10

= =End. Exp.

3000356E

30sec.


– the “End exp.”display reading does notdrop more than 10 cm H

2O during the

exp. pause hold time (30 seconds).

– the diodes showing the actual pressureon the “Airway press.” bargraph showthe same value ±5 cm H

2O. If not, see

chapter calibration. Note: The diodescan be hidden behind the diodesshowing the set PEEP level.

In case of leakage, check all connections inthe ventilator.

• Remove the patient tube.

Pause hold

300-

D85

E

Insp.

Exp.


8

Function check

��

3. Pressure levels• Connect patient tubes, Y-piece and test

lung.

• Make sure the pressure indication on the“Airway press.” bargraph equals thedisplay “End exp.” reading at the end ofexpiration. The value must be in the range9 – 11 cm H

2O.

• Make sure the pressure indication on the“Airway press.” bargraph equals thedisplay “Peak” reading at the end ofinspiration. The value must be in therange 38 – 42 cm H

2O.

20

3040 50 60

70

80

90100

100

30

20 30

4010

5

15

25

35

4510

5003000357E


PEEP

Adult

Pediatric

Neonate

• Set the patient range selector to “Adult”.

• Set “Pressure Control Level above PEEP”to 30 cm H2O.


9-11

= 4040

10 =3000358E

End. Exp.

Peak

9

Function check

��

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4. Trigger function• Set “Trig. sensitivity Level below PEEP”

in the green range.

-16

-14

-12

-10-8 -6

-4

-2

0

300-F30E


• Toward the end of expiration, quicklycompress and release the test lung andmake sure:

– two yellow diodes at the lower right endof the “Airway press.” bargraph flashonce.

– a breath is initiated.

-16

-14

-12

-10-8 -6

-4

-2

017

300-F32E


• Set “Trig. sensitivity Level below PEEP”to -17 cm H2O.

10

Function check

5. Upper pressure limit alarm• Turn “Upper press. limit” slowly counter-

clockwise and make sure upper pressurelimit alarm is activated when “Upperpress. limit” and the display “Peak” showthe same value ±2 cm H

2O.

2030

40

5060 70 80

90

100

110120

==

3000360E

Upper press. limit

Peak

• Set “Upper press. limit” to 60 cm H2O.

2030

40

5060 70 80

90

100

110120

60



– the inspiration stops and expiration starts.

– the red light at “Airway pressure” in thealarm section lights up each time thealarm is activated.

– the yellow light at “Airway pressure” islit at the end of each alarm activation(when the red light at “Airway pressure”goes out).

– the “Alarms and messages” displayshows Airway pressure too high.

– the upper pressure limit indication onthe bargraph flashes.

– the safety valve does not open. (If itopens, a distinct sound is heard and thePEEP-level drops to zero.)

Alarms and messages

Airwaypressure

3000

316E


11

Function check

20

3040 50 60

70

80

90100

100

0

0

20 30

4010

5

15

25

35

450

503000362E


PEEP


3000

317E

Alarms and messages

Airwaypressure


• Touch the touchpad at “Airway pressure”in the alarm section and make sure thedisplay shows Airway pressure toohigh.


2O.


Reset

2 min

300-D68E

Important: Proceed with the instructionson the inside of the front cover beforecontinuing the Function check.

12

Function check

6. Tidal and minute volumesTest of tidal and minute volumes andflow transducer integrity.


Volume Control

3000

318E Volume

Control/Support

375

Volume

3000364E

Tidal vol.ml

1020

304050

6070 80 90

100110120130

14015020

CMV freq. b/min

3000363E

Set freq.b/min

• Adjust “CMV freq. b/min” so that thegreen display “Set freq. b/min” shows20 b/min.

• Adjust “Volume” so that the greendisplay “Tidal vol. ml” shows 375 ml.

13

Function check

• Make sure the green display“Minute vol. l/min” shows 7.5 ±0.2 l/min.

7.5

7.5

375

375

375

3000

366E

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml


=

=

8

3000367E

Minute vol.l/min


• Also make sure the minute volumebargraph shows:

– preset minute volume at the same valueas the green display “Minute vol.l/min.” Accuracy:±0.5 l/min

– measured minute volume at the samevalue as the red display “Exp. minutevol. l/min”. Accuracy: ±0.5 l/min.

• Wait a few breaths, then make sure:

– the readings on the red display“Insp. tidal vol. ml” and the greendisplay “Tidal vol. ml” correspond.Accuracy: ±10 ml.

– the readings on the red display“Exp. tidal vol. ml” and the greendisplay “Tidal vol. ml” correspond.Accuracy: ±10 ml.

– the readings on the red display“Exp. minute vol. l/min” and the greendisplay “Minute vol. l/min” correspond.Accuracy: ±0.2 l/min.

7.5

Minute vol.l/min

3000365E

14

Function check

7. Minute volume alarmsLower alarm limit

• Turn “Lower alarm limit” slowlyclockwise and make sure:

– the expired minute volume alarm isactivated when the lower alarm limitindication passes the measured minutevolume indication on the bargraph.

5

10

1520

25

30

35

40

300-D72E

Lower alarm limit

5

10

1520

25

30

35

40

0

3000320E

Lower alarm limit

• Turn “Lower alarm limit” to 0 l/min.

6

8

5

10

1520

25

30

35

40

==

3000

319E

Alarms and messages

Exp. minutevolume

Lower alarm limit




– the “Alarms and messages” displayshows Exp. minute volume too low.


– the lower alarm indication on thebargraph flashes.

– the lower alarm limit indication on thebargraph corresponds to the ”Loweralarm limit” setting. Accuracy:±0.5 l/min.

15

Function check

• Make sure the yellow light at“Exp. minute volume” is lit.

3000

322E

Exp. minutevolume


Reset

2 min

300-D68E

• Touch the “Exp. minute volume”touchpad and make sure the display“Alarms and messages” shows Exp.minute volume too low.

3000321E

Alarms and messages

Exp. minutevolume


16

Function check

Upper alarm limit

• Turn “Upper alarm limit” slowly counter-clockwise and make sure:

– the expired minute volume alarm isactivated when the upper alarm limitindication passes the measured minutevolume indication on the bargraph.

5

10

15

2025 30 35

4045

5055

60

300-D75E

Upper alarm limit

5

10

15

2025 30 35

4045

5055

60

60

300-G71E

Upper alarm limit

• Turn “Upper alarm limit” to 60 l/min.

6

8

=5

10

15

2025 30 35

4045

5055

60

=

300-

D83

E

Alarms and messages

Exp. minutevolume

Upper alarm limit




– the “Alarms and messages” displayshows Exp. minute volume too high.


– the upper alarm limit indication on thebargraph flashes.

– the upper alarm limit indication on thebargraph corresponds to the ”Upperalarm limit” setting. Accuracy:±0.5 l/min.

17

Function check

Reset

2 min

300-D68E

• Touch the “Exp. minute volume”touchpad and make sure the display“Alarms and messages” shows Expminute volume too high.

• Make sure the yellow light at“Exp. minute volume” is lit.

3000

322E

Exp. minutevolume

3000323E

Exp. minutevolume

Alarms and messages



18

Function check

8. Check of “Neonate” range• Set the patient range selector to

“Neonate.”

• Check the “Upper alarm limit” and”Lower alarm limit” for expired minutevolume as described in section 7.

300-

F46

E

Alarms and messages

Technical

OVERRANGE: Select PEDIATRIC

– the red light at “Technical” flashes.

– the display “Alarms and messages”shows Overrange: Select pediatric.

3000369E

Insp. tidal vol.ml

– the red “Insp. tidal vol. ml” displayflashes.

3000355E

Adult

Pediatric

Neonate

300-

F45

E

Alarm limits

Neonate 1/10

• Make sure:

– the yellow light “Neonate 1/10” is lit.

19

Function check

Reset

2 min

300-D68E

• Reset all alarms.

375

Volume

3000372E

Tidal vol.ml

3000

371E

Adult

Pediatric

Neonate

<40

Volume

3000370E

Tidal vol.ml

• Turn “Volume” counter-clockwise untilthe display “Insp. tidal vol. ml” stopsflashing. The green display “Tidal vol. ml”reading shall be below 40 ml.

• Set the patient range selector to “Adult.”

• Set “Volume” so that the display “Tidalvol. ml” shows 375 ml.

20


��

��

9. ”Check tubings” alarm• Set to “Pressure Control” mode.


2O.

• Set ”PEEP” to 5 cm H2O.

20

3040 50 60

70

80

90100

100

20

20 30

10

5

15

25

35

455

500

40

3000324E


PEEP

Pressure Control


300-

F50

E

Alarms and messages

Technical

Checktubings

• Make sure:

– the red light at “Technical” flashes

– the display “Alarms and messages”shows Check tubings.

– the safety valve opens for approx 5seconds.


21


��

�

• Reconnect the bacteria filter.

• Set ”Press. Control Level above PEEP” to0 cm H

2O.

• Set ”PEEP” to 0 cm H2O.


20

3040 50 60

70

80

90100

100

0

0

20 30

4010

5

15

25

35

450

503000362E


PEEP

Reset

2 min

300-D68E

22

Function check

10. Apnea alarm• Set to “Volume Support” mode.

3000376E

Volume Support



– the ventilator switches back from“Pressure Reg. Volume Control” to“Volume Support”.

20 sec

3000325E

Alarms and messages


Volume Support

APNEA ALARM


• Wait for 20 seconds and make sure apneaalarm is activated.



– the “Alarms and messages” displayshows Apnea alarm.

– the ventilator changes from “VolumeSupport” to “Pressure Reg. VolumeControl” mode (indicated by flashingyellow light at “Pressure Reg. VolumeControl”).

2 min

3000326E


Volume Support

Reset


Volume Control

3000

318E Volume

Control/Support

23

Function check

��

��

��

�

11. Safety valve


• Disconnect the patient tube from theinspiratory outlet.

300-

F52

E

AIRWAY PRESSURETOO HIGH

Alarms and messages

AirwayPressure

• Cover the opening of the inspiratory outletand make sure:



– the display “Alarms and messages”shows Airway pressure too high.

– the yellow light at “Airway pressure” islit.

Do not activate the safety valve repea-tedly since this may cause an overloadof the electromagnet that controls thevalve.

• Connect the patient tube to theinspiratory outlet.

Reset

2 min

300-D68E

24

Function check

12. O2 alarmLower alarm limit

• Hold “Pause hold” at “Exp” and:

21

30

40

5060

70

80

90

100

40 40

3000

329E

O2 conc. %


21

30

40

5060

70

80

90

100

XX+6%

3000

328E

O2 conc. %

O2 concentration

Alarms and messages

O2 conctoo low

XX

3000327E

Alarms and messages


display “Alarms and messages”. Thereading shall be 40 ± 3% O

2.

• Turn “O2 conc. %” clockwise and make

sure the “O2 concentration” alarm is

activated when the green display“O

2 conc. %” reading is 6 ±1% higher

than the noted value.

Pause hold

Insp.

Exp.

300-D59E


– the red light at “O2 concentration”

flashes.

– the display “Alarms and messages”shows O2 conc too low.

25

Function check

Upper alarm limit

• Hold “Pause hold” at “Exp.” and:

21

30

40

5060

70

80

90

100

40 40

3000

329E

O2 conc. %

• Set “O2 conc. %” to 40%.

• Turn “O2 conc. %” counter-clockwise and

make sure the O2 concentration alarm is

activated when the green display“O

2 conc. %” reading is 6 ±1% lower

than the noted value.



flashes.

– the display “Alarms and messages”shows O2 conc too high.

21

30

40

5060

70

80

90

100

XX-6%

3000

381E

O2 conc. %

O2 concentration

Alarms and messages

O2 conctoo high

XX

3000330E

Alarms and messages


display “Alarms and messages”. Thereading shall be 40 ± 3% O

2.

Pause hold

Insp.

Exp.

300-D59E

26

Function check

��

��

13. Gas supply system• Disconnect the O

2 supply and make sure

Gas supply and O2 concentration alarms

are activated.




– the red light at “O2concentration”flashes.

300-

F75

E

Gas supply

O2 concentration




– the “Alarms and messages” displayshows O2 supply pressure too low.Air: X.X bar. O2: X.X bar.

300-

G70

E

Gas supply

Alarms and messages

O2 supply pressuretoo low.


XX

3000330E

Alarms and messages

27

Function check

��

�� • Connect O2 supply.

• At the alarm activations, make sure:



flashes.


• Disconnect the air supply and make sureGas supply and O

2 concentration alarms

are activated.

Reset

2 min

300-D68E

• Wait a few breaths and then reset thealarms.

300-

F75

E

Gas supply

O2 concentration

300-D93E

O2

AIR300-D93E

28

Function check


–the “Alarms and messages” displayshows Air supply pressure too low.Air: X.X bar. O2: X.X bar.

300-

F76

E

Gas supply

Alarms and messages

Air supply pressureto low.



– the red display “Exp. minute vol. l/min”still shows the same value as the greendisplay “Minute vol. l/min”. Accuracy:±0.5 l/min.=

=3000334E

Tidal vol.ml

Minute vol.l/min

Insp. tidal vol.ml

Exp. tidal vol.ml


Reset

2 min

29

Function check

��

��

��

��

• Disconnect O2 supply so that no gas is

connected to the ventilator.Make sure:


– the expiratory valve opens.

• Connect the air and O2 supplies.

• Reset the alarms.

Reset

2 min

300-D68E

300-D96E

30


��

��

14. Battery operation• Disconnect the ventilator from mains and

make sure Battery alarm is activated.

– the yellow light at “Ventilator off Batterycharging” and the green light “Mains”are not lit.



– the red light at “Battery” flashes.

– the display “Alarms and messages”flashes BATTERY.

300-

D99

E

Alarms and messages

Battery

BATTERY

3000


Battery charging

31

Function check

2 min

300-E00E

Reset

Battery


– the caution signal starts.

– the yellow light at “Battery” is lit.

XX V

3000

336E

Alarms and messages

Battery

• To check the internal battery, touch thetouchpad at “Battery” and read thedisplayed text. (Normal value approx.24 V.)

32


��

��

• Connect the ventilator to mains again.

3000


Battery charging

• Make sure :

– the yellow light at “Ventilator off Batterycharging” and the green light “Mains”are lit.

– the caution signal stops.

3000

338E

Alarms and messages

Battery

– the display “Alarms and messages” nolonger flashes BATTERY.

– the yellow light at “Battery” is no longerlit.

33

Function check

15. Automode(SV 300A only)

• Set “Automode” to “On”.

• Set “Trig sensitivity Level below PEEP” inthe green range.

• Compress and release the test lung twiceto trigger a breath. Two diodes on thebargraph for airway pressure show that abreath is triggered.

• Make sure the ventilator switches tosupport mode. This is shown by theyellow light “Support”.

-16

-14

-12

-10-8 -6

-4

-2

0

3000

230E


On

Off

Support

Automode

��

��

300

0232

E

On

Of

Support

Automode

34

Function check

16. Log sheet• Note on a log sheet that a function check

has been performed.

Stand by

3000339E

• The Function check is now complete, setthe mode selector to “Stand by”, or, ifthe ventilator is to be connected to apatient, make the appropriate settings forthat patient.

• Do not trigger any more breaths andmake sure the ventilator switches back to“Volume Control” after about 12 seconds.(The yellow light ”Support” is no longerlit.)

• Set “Trig sensitivity Level below PEEP” to-17 cm H

2O.

• Set “Automode” to “Off”

300

0233

E

On

Of

Support

Automode

12 s

-16

-14

-12

-10-8 -6

-4

-2

0

3000219E


On

Off

Support

Automode

-17

NotesImportantImportantImportantImportantImportant

The Servo Ventilator 300/300A is not designed to withstand severenegative pressures. If a negative suction pressure exceeding 100 cmH2O (-100 cm H2O) is applied to the system, the pressure transducersmay be damaged causing the system to become inoperable.Observe the following for the Servo Ventilator 300/300A.When using closed system suctioning:• If the suctioning flow is higher than that which is delivered by the

ventilator, a negaitve pressure may be generated which will beapplied to the lung and the ventilator breathing system.

• Do not use the Stand by position, Inspiratory pause hold, orExpiratory pause hold during the closed suctioning procedure.

Function test for ”Insp. time %”and ”PEEP” potentiometers

Insp. time %• Set ”Insp. tid %” to 80 %.

• Turn the knob slowly counter-clockwise to10% simultaneously watch the reading onthe display ”Insp.period s” . The readingmust decrease evenly, digit by digit,without any sudden jumps (up or down).

• Set ”Insp. time %” back to 25 %.

PEEP• Set ”PEEP” to 50 cm H2O.

• Turn the knob slowly counter-clockwise to0 cm H2O. Simultaneously watch the twodiodes showing preset PEEP as well asthe two diodes showing actual pressureon the ”Airway pressure” bargraph. Thevalues indicated must follow each otherevenly, decreasing step by step, withoutany sudden jumps (up or down).

Insp. time %

PEEP

Insp. period s

Adult

Pediatric

Neonate

15

5

11

2

19

19

1 . 13

0 . 35

261

5 . 0

259

266

5 . 1

21

SIEMENS

Automode

On

Off

Support

Servo Ventilator 300 A

CRITICAL CARE

© MAQUET Critical Care AB, Electromedical Systems Division,1996-2000. All rights reserved. No part of thispublication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,electronic, mechanical, photocopying, recording, or otherwise, without the prior permission of the copyrightowner i writing. Subject to alterations without prior notice.Issued by MAQUET Critical Care AB, SE-171 95 SOLNA, Sweden.

Printed in Sweden.Price: Group 6.0109 1.55th English edition,June 2000.

Servo Ventilator 300/300A – Operating Manual 8.1/9.1Art.-Nr. 64 08 004 E313E

SE

RV

O V

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TILATOR

300/300A O

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SERVO VENTILATOR 300/300A

OPERATING MANUAL 8.1/9.1

OPERATING MANUAL 8.1/9

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