FX10 Operation Manual

Atlas CopcoRefrigerant compressed air dryers

FX 1, FX 2, FX 3, FX 4, FX 5, FX 6, FX 7, FX 8, FX 9, FX 10, FX 11, FX 12,FX 13, FX 14, FX 15, FX 16

Instruction book

Atlas CopcoRefrigerant compressed air dryers

FX 1, FX 2, FX 3, FX 4, FX 5, FX 6, FX 7, FX 8, FX 9, FX 10,FX 11, FX 12, FX 13, FX 14, FX 15, FX 16

Instruction book

Copyright noticeAny unauthorized use or copying of the contents or any part thereof is prohibited.

This applies in particular to trademarks, model denominations, part numbers and drawings.

This instruction book meets the requirements for instructions specified by the machinerydirective 98/37/EC and is valid for CE as well as non-CE labelled machines.

2008 - 07

No. 2920 7006 01Replaces No. 2920 7006 00

www.atlascopco.com

Table of contents

1 Safety precautions..........................................................................................................4

1.1 SAFETY ICONS...................................................................................................................................4

1.2 SAFETY PRECAUTIONS DURING INSTALLATION...........................................................................................4

1.3 SAFETY PRECAUTIONS DURING OPERATION..............................................................................................6

1.4 SAFETY PRECAUTIONS DURING MAINTENANCE OR REPAIR...........................................................................7

2 General description........................................................................................................9

2.1 INTRODUCTION...................................................................................................................................9

2.2 AIR SYSTEM....................................................................................................................................10

2.3 REFRIGERATION SYSTEM....................................................................................................................12

2.4 AUTOMATIC REGULATION SYSTEM........................................................................................................13

2.5 ELECTRICAL SYSTEM.........................................................................................................................15

3 Installation.....................................................................................................................16

3.1 DIMENSION DRAWINGS.......................................................................................................................16

3.2 INSTALLATION PROPOSAL...................................................................................................................20

3.3 INSTALLATION PROPOSAL FX 13 UP TO FX 16.....................................................................................21

3.4 PICTOGRAPHS.................................................................................................................................24

4 Operating instructions.................................................................................................25

4.1 WARNINGS......................................................................................................................................25

4.2 CONTROL PANEL..............................................................................................................................25

4.3 STARTING.......................................................................................................................................26

4.4 DURING OPERATION..........................................................................................................................27

4.5 STOPPING.......................................................................................................................................28

5 Maintenance..................................................................................................................30

5.1 MAINTENANCE INSTRUCTIONS.............................................................................................................30

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6 Settings..........................................................................................................................31

6.1 DEVICE SETTINGS.............................................................................................................................31

7 Problem solving............................................................................................................32

7.1 PROBLEM SOLVING...........................................................................................................................32

8 Technical data...............................................................................................................35

8.1 REFERENCE CONDITIONS AND LIMITATIONS............................................................................................35

8.2 AIR DRYER DATA..............................................................................................................................36

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1 Safety precautions

1.1 Safety icons

Explanation

Danger for life

Warning

Important note

1.2 Safety precautions during installation

All responsibility for any damage or injury resulting from neglecting theseprecautions, or non-observance of the normal caution and care required forinstallation, operation, maintenance and repair, even if not expressly stated, willbe disclaimed by the manufacturer.

General precautions

1. The operator must employ safe working practices and observe all related work safety requirements andregulations.

2. If any of the following statements does not comply with the applicable legislation, the stricter of the twoshall apply.

3. Installation, operation, maintenance and repair work must only be performed by authorised, trained,specialised personnel.

4. The compressor is not considered capable of producing air of breathing quality. For air of breathing quality,the compressed air must be adequately purified according to the applicable legislation and standards.

5. Before any maintenance, repair work, adjustment or any other non-routine checks, stop the compressor,press the emergency stop button, switch off the voltage and depressurise the compressor. In addition, thepower isolating switch must be opened and locked.

6. Never play with compressed air. Do not apply the air to your skin or direct an air stream at people. Neveruse the air to clean dirt from your clothes. When using the air to clean equipment, do so with extremecaution and wear eye protection.

7. The owner is responsible for maintaining the unit in safe operating condition. Parts and accessories shallbe replaced if unsuitable for safe operation.

Precautions during installation

1. The machine must only be lifted using suitable equipment in accordance with the applicable safetyregulations. Loose or pivoting parts must be securely fastened before lifting. It is strictly forbidden to

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4 2920 7006 01

dwell or stay in the risk zone under a lifted load. Lifting acceleration and deceleration must be kept withinsafe limits. Wear a safety helmet when working in the area of overhead or lifting equipment.

2. Place the machine where the ambient air is as cool and clean as possible. If necessary, install a suctionduct. Never obstruct the air inlet. Care must be taken to minimise the entry of moisture at the inlet air.

3. Any blanking flanges, plugs, caps and desiccant bags must be removed before connecting the pipes.4. Air hoses must be of correct size and suitable for the working pressure. Never use frayed, damaged or

worn hoses. Distribution pipes and connections must be of the correct size and suitable for the workingpressure.

5. The aspirated air must be free of flammable fumes, vapours and particles, e.g. paint solvents, that can leadto internal fire or explosion.

6. Arrange the air intake so that loose clothing worn by people cannot be sucked in.7. Ensure that the discharge pipe from the compressor to the aftercooler or air net is free to expand under

heat and that it is not in contact with or close to flammable materials.8. No external force may be exerted on the air outlet valve; the connected pipe must be free of strain.9. If remote control is installed, the machine must bear a clear sign stating: DANGER: This machine is

remotely controlled and may start without warning.The operator has to make sure that the machine is stopped and that the isolating switch is open and lockedbefore any maintenance or repair. As a further safeguard, persons switching on remotely controlledmachines shall take adequate precautions to ensure that there is no one checking or working on themachine. To this end, a suitable notice shall be affixed to the start equipment.

10. Air-cooled machines must be installed in such a way that an adequate flow of cooling air is available andthat the exhausted air does not recirculate to the compressor air inlet or cooling air inlet.

11. The electrical connections must correspond to the applicable codes. The machines must be earthed andprotected against short circuits by fuses in all phases. A lockable power isolating switch must be installednear the compressor.

12. On machines with automatic start-stop system or if the automatic restart function after voltage failure isactivated, a sign stating "This machine may start without warning" must be affixed near the instrumentpanel.

13. In multiple compressor systems, manual valves must be installed to isolate each compressor. Non-returnvalves (check valves) must not be relied upon for isolating pressure systems.

14. Never remove or tamper with the safety devices, guards or insulation fitted on the machine. Every pressurevessel or auxiliary installed outside the machine to contain air above atmospheric pressure must beprotected by a pressure-relieving device or devices as required.

15. Pipework or other parts with a temperature in excess of 80˚C (176˚F) and which may be accidentallytouched by personnel in normal operation must be guarded or insulated. Other high-temperature pipeworkmust be clearly marked.

16. For water-cooled machines, the cooling water system installed outside the machine has to be protected bya safety device with set pressure according to the maximum cooling water inlet pressure.

17. If the ground is not level or can be subject to variable inclination, consult the manufacturer.

Also consult following safety precautions: Safety precautions during operation and Safetyprecautions during maintenance.These precautions apply to machinery processing or consuming air or inert gas. Processingof any other gas requires additional safety precautions typical to the application which are notincluded herein.Some precautions are general and cover several machine types and equipment; hence somestatements may not apply to your machine.

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1.3 Safety precautions during operation


General precautions

1. The operator must employ safe working practices and observe all related work safety requirements andregulations.



4. The compressor is not considered capable of producing air of breathing quality. For air of breathing quality,the compressed air must be adequately purified according to the applicable legislation and standards.



Precautions during operation

1. Use only the correct type and size of hose end fittings and connections. When blowing through a hose orair line, ensure that the open end is held securely. A free end will whip and may cause injury. Make surethat a hose is fully depressurized before disconnecting it.

2. Persons switching on remotely controlled machines shall take adequate precautions to ensure that thereis no one checking or working on the machine. To this end, a suitable notice shall be affixed to the remotestart equipment.

3. Never operate the machine when there is a possibility of taking in flammable or toxic fumes, vapours orparticles.

4. Never operate the machine below or in excess of its limit ratings.5. Keep all bodywork doors shut during operation. The doors may be opened for short periods only, e.g. to

carry out routine checks. Wear ear protectors when opening a door.6. People staying in environments or rooms where the sound pressure level reaches or exceeds 90 dB(A)

shall wear ear protectors.7. Periodically check that:

• All guards are in place and securely fastened• All hoses and/or pipes inside the machine are in good condition, secure and not rubbing• There are no leaks• All fasteners are tight• All electrical leads are secure and in good order• Safety valves and other pressure-relief devices are not obstructed by dirt or paint• Air outlet valve and air net, i.e. pipes, couplings, manifolds, valves, hoses, etc. are in good repair, free

of wear or abuse8. If warm cooling air from compressors is used in air heating systems, e.g. to warm up a workroom, take

precautions against air pollution and possible contamination of the breathing air.

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9. Do not remove any of, or tamper with, the sound-damping material.10. Never remove or tamper with the safety devices, guards or insulations fitted on the machine. Every pressure

vessel or auxiliary installed outside the machine to contain air above atmospheric pressure shall beprotected by a pressure-relieving device or devices as required.

Also consult following safety precautions: Safety precautions during installation and Safetyprecautions during maintenance.These precautions apply to machinery processing or consuming air or inert gas. Processingof any other gas requires additional safety precautions typical to the application which are notincluded herein.Some precautions are general and cover several machine types and equipment; hence somestatements may not apply to your machine.

1.4 Safety precautions during maintenance or repair


General precautions

1. The operator must employ safe working practices and observe all related local work safety requirementsand regulations.



4. The compressor is not considered capable of producing air of breathing quality. For air of breathing quality,the compressed air must be adequately purified according to local legislation and standards.



Precautions during maintenance or repair

1. Always wear safety glasses.2. Use only the correct tools for maintenance and repair work.3. Use only genuine spare parts.4. All maintenance work shall only be undertaken when the machine has cooled down.5. A warning sign bearing a legend such as "work in progress; do not start" shall be attached to the starting

equipment.6. Persons switching on remotely controlled machines shall take adequate precautions to ensure that there

is no one checking or working on the machine. To this end, a suitable notice shall be affixed to the remotestart equipment.

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7. Close the compressor air outlet valve before connecting or disconnecting a pipe.8. Before removing any pressurized component, effectively isolate the machine from all sources of pressure

and relieve the entire system of pressure.9. Never use flammable solvents or carbon tetrachloride for cleaning parts. Take safety precautions against

toxic vapours of cleaning liquids.10. Scrupulously observe cleanliness during maintenance and repair. Keep dirt away by covering the parts

and exposed openings with a clean cloth, paper or tape.11. Never weld or perform any operation involving heat near the oil system. Oil tanks must be completely

purged, e.g. by steam-cleaning, before carrying out such operations. Never weld on, or in any way modify,pressure vessels.

12. Whenever there is an indication or any suspicion that an internal part of a machine is overheated, themachine shall be stopped but no inspection covers shall be opened before sufficient cooling time haselapsed; this to avoid the risk of spontaneous ignition of the oil vapour when air is admitted.

13. Never use a light source with open flame for inspecting the interior of a machine, pressure vessel, etc.14. Make sure that no tools, loose parts or rags are left in or on the machine.15. All regulating and safety devices shall be maintained with due care to ensure that they function properly.

They may not be put out of action.16. Before clearing the machine for use after maintenance or overhaul, check that operating pressures,

temperatures and time settings are correct. Check that all control and shut-down devices are fitted and thatthey function correctly. If removed, check that the coupling guard of the compressor drive shaft has beenreinstalled.

17. Every time the separator element is renewed, examine the discharge pipe and the inside of the oil separatorvessel for carbon deposits; if excessive, the deposits should be removed.

18. Protect the motor, air filter, electrical and regulating components, etc. to prevent moisture from enteringthem, e.g. when steam-cleaning.

19. Make sure that all sound-damping material and vibration dampers, e.g. damping material on the bodyworkand in the air inlet and outlet systems of the compressor, is in good condition. If damaged, replace it bygenuine material from the manufacturer to prevent the sound pressure level from increasing.

20. Never use caustic solvents which can damage materials of the air net, e.g. polycarbonate bowls.21. The following safety precautions are stressed when handling refrigerant:

• Never inhale refrigerant vapours. Check that the working area is adequately ventilated; if required, usebreathing protection.

• Always wear special gloves. In case of refrigerant contact with the skin, rinse the skin with water. Ifliquid refrigerant contacts the skin through clothing, never tear off or remove the latter; flushabundantly with fresh water over the clothing until all refrigerant is flushed away; then seek medicalfirst aid.

22. Protect hands to avoid injury from hot machine parts, e.g. during draining of oil.

Also consult following safety precautions: Safety precautions during installation and Safetyprecautions during operation.These precautions apply to machinery processing or consuming air or inert gas. Processingof any other gas requires additional safety precautions typical to the application which are notincluded herein.Some precautions are general and cover several machine types and equipment; hence somestatements may not apply to your machine.

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2 General description

2.1 Introduction

General views

FX 1 up to FX 5

FX 6 up to FX 12

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FX 13 up to FX 16

Introduction

The FX air dryers remove moisture from compressed air by cooling the air to near freezing point. This causeswater to condense. The condensate is automatically drained. The air is warmed up before leaving the dryer.

2.2 Air system

Air flow diagram

FX 1 up to FX 12

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FX 13 up to FX 16

Reference NameA Air outletB Air inlet1 Refrigerant compressor2 Condenser3 Motor and fan4 Air refrigerant heat exchanger/evaporator5 Condensate separator6 Impurity trap7 Expansion capillary tube8 Refrigerant filter9 Hot gas by-pass valve10 Air/air heat exchanger11 Dewpoint indicator12 On FX 1 up to FX 12, fan control switch

On FX 13 up to FX 16, maximum pressure switch13 On FX 1 up to FX 12, automatic condensate drain

On FX 13 up to FX 16, fan control switch14 Liquid separator15 Automatic condensate drain

Description

Compressed air enters heat exchanger (10) and is cooled by the outgoing, cold, dried air. Water in the incomingair starts to condense. The air then flows through heat exchanger/evaporator (4) where the refrigerantevaporates causing the air to be cooled further to close to the evaporating temperature of the refrigerant. Morewater in the air condenses. The cold air then flows through separator (5) where all the condensate is separatedfrom the air. The condensate is automatically drained.

The cold, dried air flows through heat exchanger (10) where it is warmed up by the incoming air to approx.10˚C (18˚F) below the incoming air temperature.

Condensation in the air net cannot occur unless the air is cooled to below the pressure dewpoint indicated bythe dewpoint indicator (11).

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2.3 Refrigeration system

Refrigerant flow diagram

FX 1 up to FX 12

FX 13 up to FX 16

Reference NameA Air outletB Air inlet1 Refrigerant compressor2 Condenser3 Motor and fan4 Air refrigerant heat exchanger/evaporator5 Condensate separator6 Impurity trap7 Expansion capillary tube8 Refrigerant filter9 Hot gas by-pass valve10 Air/air heat exchanger11 Dew point indicator

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Reference Name12 On FX 1 up to FX 12, fan control switch



Description

Compressor (1) delivers hot, high-pressure refrigerant gas which flows through condenser (2) where most ofthe refrigerant condenses.

The liquid flows through liquid refrigerant dryer/filter (8) to capillary tube (7). The refrigerant leaves thecapillary tube at evaporating pressure.

The refrigerant enters evaporator (4) where it withdraws heat from the compressed air by further evaporationat constant pressure. The heated refrigerant leaves the evaporator and is sucked in by the compressor (1).

2.4 Automatic regulation system

Air and refrigerant flow diagram

FX 1 up to FX 12

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FX 13 up to FX 16

Reference NameA Air outletB Air inlet1 Refrigerant compressor2 Condenser3 Motor and fan4 Air refrigerant heat exchanger/evaporator5 Condensate separator6 Impurity trap7 Expansion capillary tube8 Refrigerant filter9 Hot gas by-pass valve10 Air/air heat exchanger11 Dewpoint indicator12 On FX 1 up to FX 12, fan control switch



Description

The condenser pressure must be kept as constant as possible to obtain stable operation. Fan control switch(12) therefore stops and starts the cooling fan (3).

If, under partial or no load, the evaporator pressure drops below a certain level, the hot gas by-pass valve (9)opens and hot, high-pressure gas is fed to the evaporator circuit to prevent the evaporator pressure fromdropping any further.

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2.5 Electrical system

Description

The fan control switch starts the fan motor as soon as the condenser pressure reaches the upper set point ofthe switch and will stop the fan motor when the condenser pressure decreases to its lower set point.

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3 Installation

3.1 Dimension drawings

FX 1 up to FX 12

FX 1 up to FX 5

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FX 6 and FX 7

FX 8 up to FX 10

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FX 11 and FX 12

Reference Name(1) Electric cable outlet(2) Condensate drain outlet, internal pipe diameter 10 mm / 0.39 in(3) Dryer version(4) Air inlet(5) Air outlet(6) Air flow(7) Air flow for FX 11 and FX 12 230 V - 60 Hz variants(8) Air connection detail

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FX 13 up to FX 16

Reference Name(1) Air inlet(2) Air outlet(3) Condensate drain(4) Electric cable(5) Cooling air flow(6) NPT adaptor (special version)

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3.2 Installation proposal

Moving

To move the dryer use a fork lift truck.Do not use metal cables for lifting.Move the dryer gently.

Example of compressor room

For FX 1 up to FX 12:

Installation proposal for FX 1 up to FX 5

Installation proposal for FX 6 up to FX 12

Reference Description- The refrigerant air dryer should be installed on a level floor suitable for its weight.

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Reference Description- Install the dryer where the ambient air is as clean as possible and where the temperature

of the air will never exceed the limits. See Reference conditions and limitations. Keep theventilation gratings of the dryer free.The recommended minimum distance between the top of the unit and the ceiling is 1.5 m(58.5 in).The minimum distance between the wall and the back of the compressor must be 1.5 m(58.5 in).Lay out the condensate drain hose via a funnel towards a drain collector to allow visualinspection. The hose must slope downwards.If the condensate drain has been fitted outside the compressor room where it may beexposed to freezing temperatures, it must be insulated.

- The power cable must be connected by a qualified electrician.Connect the dryer to the correct voltage; if necessary, check the unit data plate.Check that the electrical installation corresponds to local codes. The dryer must be earthedand protected against short circuits using an automatic cut-out device with a differentialdevice.An isolating switch must be installed near the dryer.

- Connect the compressed air lines to the marked inlet and outlet pipes of the dryer (seeDimension drawings). Provide an air inlet valve and outlet valve. If a by-pass pipe andvalve are installed, the dryer can be serviced while it is by-passed.

1 Location of isolating switch and fuses.2 Minimum distance 1.5 m (58.5 in).

3.3 Installation proposal FX 13 up to FX 16

Moving

To move the dryer use a fork lift truck.Do not use metal cables for lifting.Move the dryer gently.

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Compressor room example

• Air treatment with dryer downstream of the air receiver: this can be used when the compressor runsconstantly and the cooling capacity of the dryer is equal to the air delivery of the compressor. Under thiscondition the load of the dryer is constant.

• Air treatment with dryer upstream of the air receiver: this can be used when the air demand is variable.The air demand is for short periods higher than the compressor can deliver, the air receiver must be largeenough to meet the instant air demand.

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Reference Description1 The refrigerant air dryer should be installed on a level floor suitable for taking the weight

of the dryer.2 Ventilation: the inlet grids and ventilation fan should be installed in such way that any

reciculation of cooling air to the dryer is avoided. The maximum air velocity to the gridshas to be limited to 5 m/s. The maximum allowable pressure drop over the cooling air ductsis 30 Pa. When 30 Pa is exceeded, a ventilation fan is needed at the outlet of the coolingair ducts.The condensate drain pipes must not dip into the condensate. Do not allow untreatedcondensate to enter the draining system.

3 Power supply cable to be sized and installed by a qualified electrician.4 Opionally DD and PD filters can be provided.

Filter, type DD for general purpose (optional). The filter traps solids particles down to 1micron with a max. oil carry-over of 0.5 mg/m3. A high-efficiency filter, type PD (optional),may be installed downstrean of a DD filter. This filter tyraps solid particles down to 0.01micron with a max oil carry-over of 0.01 mg/m3. If oil vapours and odours are undesirable,a QD type filter should be installed downstream of the PD filter.

5 It is recommended to install by-pass pipes over each filter and dryer together with ballvalves in order to isolate the filters and/or dryer during service operations, withoutdisturbing the compressed air delivery.

5 Dryer6 Air net(1) Compressor(2) Air receiver(3) To the air piping(4) Dryer(5) Ventilation proposal(6) Air flow(7) Minimum free area to be reserved for the dryer’s installation(8) Service side(9) Contol panel side

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3.4 Pictographs

Pictographs

Reference Name1 Warning, under tension2 Warning, air not fit for breathing3 Warning, high pressure4 Warning, rotating fan5 Warning, hot surface6 Switch off the voltage and depressurize the dryer before maintenance or repair

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4 Operating instructions

4.1 Warnings

Safety precautions

The operator must apply all relevant Safety precautions, including those mentioned in this manual.

Altitude operation

Consult Atlas Copco if operating above 3000 m (9843 ft).

4.2 Control panel

Description

FX 1 up to FX 5

FX 6 up to FX 12

Reference Name1 Dewpoint indicator2 Dryer on/off switch

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FX 13 up to FX 16

Reference Name1 Dewpoint indicator2 Dryer on/off switch3 Green indicator for voltage on, dryer running and blocked door4 Red indicator for alarm for high pressure or fan motor protection

4.3 Starting

Attention

To ensure optimum operational efficiency, do not use dryer on/off switch (S1) repeatedlywithin a short time period.Wait at least 5 minutes to start the dryer again after stopping to allow pressure equalization.To keep the compressed air net free of condensate, start the dryer before starting thecompressor and stop the compressor before stopping the dryer.

Procedure

FX 1 up to FX 5

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FX 6 up to FX 12

FX 13 up to FX 16

Step Action1 If installed, close the dryer by-pass valve. See Installation proposal.2 Press dryer on/off switch.3 Open dryer air inlet valve (customer's installation).4 Approx. 5 minutes later, open dryer air outlet valve (customer's installation).5 Approx. 10 minutes later, the nominal dewpoint will be reached.

4.4 During operation

Procedure

FX 1 up to FX 5

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FX 6 up to FX 12

FX 13 up to FX 16

Regularly check:

• The pressure dewpoint indicator on the control panel. The pressure dewpoint will deviate from nominalif the air inlet conditions or volume flow differ from nominal.

• That condensate is discharged via condensate outlet. The amount depends on the operating conditions.

4.5 Stopping

Attention

To ensure optimum operational efficiency, do not use dryer on/off switch (S1) repeatedlywithin a short time period.Wait at least 5 minutes to start the dryer again after stopping to allow pressure equalization.To keep the compressed air net free of condensate, start the dryer before starting thecompressor and stop the compressor before stopping the dryer.

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Procedure

FX 1 up to FX 5

FX 6 up to FX 12

FX 13 up to FX 16

Step Action1 Close the dryer inlet and outlet valve (customer’s installation).2 Press dryer on/off switch, the dryer stops.3 If provided, open the dryer by-pass valve.

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5 Maintenance

5.1 Maintenance instructions

Attention

Cooling dryers of FX type contain refrigerant HFC.

Safety precautions

When handling refrigerant R134a / R404a, all applicable safety precautions must be observed. Pleasebe aware of the following points:

• Contact of refrigerant with the skin will cause freezing. Special gloves must be worn. In case of contactwith the skin, the skin should be rinsed with water. On no account may clothing be removed.

• Fluid refrigerant will also cause freezing of the eyes; safety glasses must hence be worn.• Refrigerant R134a / R404a is poisonous. Do not inhale refrigerant vapours. Check that the working area

is adequately ventilated.

When removing the side panels of the dryer, be aware that internal elements such as the pipes can reach atemperature of 110˚C (230˚F). Therefore, wait until the dryer has cooled down before removing the sidepanels.

Before starting any maintenance or repair work, switch off the voltage and close the air inlet and outlet valves.

Local legislation

Local legislation may stipulate that:

• Work on the refrigerant circuit of the cooling dryer or on any equipment which influences its functionmust be undertaken by an authorised control body.

• The installation should be checked once a year by an authorised control body.

General

The following remarks should be kept in mind:

• Keep the dryer clean.• Inspect and clean the filter of the steam trap daily.• Brush or blow off the finned surface of the condenser monthly.

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6 Settings

6.1 Device settings

Regulating and safety devices

The regulating and safety devices are factory-adjusted to obtain optimum performance of the dryer. Do notalter the setting of any of the devices.

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7 Problem solving

7.1 Problem solving

Air inlet and outlet valve

Condensate drain (2) and air inlet and outlet valves (1) on FX 13 up to FX 16

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Attention

Use only authorised parts. Any damage or malfunction caused by the use of unauthorisedparts is not covered by Warranty or Product Liability.Apply all relevant Safety precautions.Before carrying out any maintenance or repair work on the dryer:Close air inlet and outlet valve of the dryer.Press the test button on the electronic condensate drain.Move dryer on/off switch to position 0.Switch off the voltage. See section Stopping.Open the isolating switch to prevent an accidental start.The air inlet and outlet valve can be locked during maintenance or repair work asfollows:• Close the valve.• Using a wrench, remove the screw fixing the handle.• Lift the handle and turn it until the slot of the handle fits over the blocking edge on the

valve body.• Fit the screw.

Faults and remedies

Condition Fault Remedy1 Pressure dewpoint too high Air inlet temperature too high Check and correct; if necessary,

install a pre-cooler Ambient temperature too high Check and correct; if necessary, draw

cooling air via a duct from a coolerplace or relocate the dryer

Air inlet pressure too low Increase inlet pressureAdjust the pressure switch

Dryer capacity exceeded Reduce air flow Shortage of refrigerant Have circuit checked for leaks and

recharged Refrigerant compressor does

not runSee 3

Evaporator pressure too high See 5 Condenser pressure too high See 22 Condenser pressure too high

or too lowFan or fan motor out of order Check fan/fan motor

Ambient temperature too high Check and correct; if necessary, drawcooling air via a duct from a coolerroom or relocate the dryer

Condenser externally clogged Clean condenser3 Compressor stops or does not

startElectric power supply tocompressor is interrupted

Check and correct as necessary

Thermal protection ofrefrigerant compressor motorhas tripped

Reset the thermostatic protection

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Condition Fault Remedy Restart of the dryer has been

too fast, not enough time forpressure balancing

Wait a few minutes and restart

4 The condensate drain remainsinoperative

Drain system clogged Have system inspected

5 Evaporator pressure is too highor too low at unload

Hot gas by-pass valveincorrectly set or out of order

Have hot gas by-pass valve adjusted

Condenser pressure too highor too low

See 2

Shortage of refrigerant Have circuit checked for leaks andrecharged

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8 Technical data

8.1 Reference conditions and limitations

Reference conditions

UnitCompressed air inlet pressure bar(e) 7Compressed air inlet pressure psig 101.53For FX1 up to FX 12:For FX 13 up to FX 16 50 Hz:Compressed air inlet temperature

˚C 35

For FX1 up to FX 12:For FX 13 up to FX 16 50 Hz:Compressed air inlet temperature

˚F 95

For FX 13 up to FX 16 60 Hz:Compressed air inlet temperature

˚C 38

For FX 13 up to FX 16 60 Hz:Compressed air inlet temperature

˚F 100

For FX1 up to FX 12:For FX 13 up to FX 16 50 Hz:Ambient temperature

˚C 25

For FX1 up to FX 12:For FX 13 up to FX 16 50 Hz:Ambient temperature

˚F 77

For FX 13 up to FX 16 60 Hz:Ambient temperature

˚C 38


˚F 100

For FX1 up to FX 12:For FX 13 up to FX 16 50 Hz:Pressure dewpoint

˚C 3

For FX1 up to FX 12:For FX 13 up to FX 16 50 Hz:Pressure dewpoint

˚F 37.4


˚C 4


˚F 39

Limits

UnitMaximum compressed air inlet pressure bar(e) 13Maximum compressed air inlet pressure psig 188.55

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UnitFor FX1 up to FX 12:Min.-max. ambient air temperature

˚C 5-43

For FX1 up to FX 12:Min.-max. ambient air temperature

˚F 41-110

For FX 13 up to FX 16:Min.-max. ambient air temperature

˚C 3-46

For FX 13 up to FX 16:Min.-max. ambient air temperature

˚F 37-114

For FX1 up to FX 12:Max. compressed air inlet temperature

˚C 55

For FX1 up to FX 12:Max. compressed air inlet temperature

˚F 122

For FX 13 up to FX 16:Max. compressed air inlet temperature

˚C 60

For FX 13 up to FX 16:Max. compressed air inlet temperature

˚F 140

8.2 Air dryer data

FX 1 up to FX 5

Air dryer type Unit FX 1 FX 2 FX 3 FX 4 FX 5Electric power input W 130 164 190 262 280Electric power input hp 0.174 0.220 0.255 0.351 0.375Electric power input, compressor W 101 135 161 233 251Electric power input, compressor hp 0.135 0.181 0.216 0.312 0.337Electric power input, fan motor W 29 29 29 33 33Electric power input, fan motor hp 0.039 0.039 0.039 0.044 0.044Weight of the unit kg 19 19 20 25 27Weight of the unit lb 41.9 41.9 44.1 55.1 59.5Refrigerant R134a R134a R134a R134a R134aTotal charge (approx.) kg 0.150 0.170 0.275 0.350 0.480Total charge (approx.) lb 0.33 0.37 0.61 0.77 1.06

FX 6 up to FX 12 - 50 Hz units

Air dryer type Unit FX 6 FX 7 FX 8 FX 9 FX 10 FX 11 FX 12Electric power input W 609 673 793 870 1122 1190 1146Electric power input hp 0.817 0.902 1.063 1.167 1.505 1.596 1.537Electric power input,compressor

W 544 608 711 788 996 1040 1296

Electric power input,compressor

hp 0.730 0.815 0.953 1.057 1.295 1.395 1.738

Instruction book

36 2920 7006 01

Air dryer type Unit FX 6 FX 7 FX 8 FX 9 FX 10 FX 11 FX 12Electric power input, fan motor W 65 65 82 82 126 150 150Electric power input, fan motor hp 0.087 0.087 0.110 0.110 0.169 0.201 0.201Weight of the unit kg 44 44 53 60 65 80 80Weight of the unit lb 97 97 116.8 132.3 143.3 176.4 176.4Refrigerant R404A R404A R404A R404A R404A R404A R404ATotal charge (approx.) kg 0.400 0.400 0.650 0.730 0.650 1.350 1.300Total charge (approx.) lb 0.882 0.882 1.433 1.610 1.433 2.977 2.867

FX 6 up to FX 12 - 60 Hz units

Air dryer type Unit FX 6 FX 7 FX 8 FX 9 FX 10 FX 11 FX 12Electric power input W 629 777.5 871.5 1055 1125 1400 1645Electric power input hp 0.843 1.043 1.169 1.415 1.509 1.877 2.206Electric power input,compressor

W 572 720.5 776.5 960 1035 1210 1455


hp 0.767 0.966 1.041 1.287 1.388 1.623 1.951

Electric power input, fan motor W 57 57 95 95 90 190 190Electric power input, fan motor hp 0.076 0.076 0.127 0.127 0.121 0.255 0.255Weight of the unit kg 44 44 53 60 65 80 80Weight of the unit lb 97 97 116.8 132.3 143.3 176.4 176.4Refrigerant R404A R404A R404A R404A R404A R404A R404ATotal charge (approx.) kg 0.400 0.400 0.650 0.730 0.650 1.350 1.300Total charge (approx.) lb 0.882 0.882 1.433 1.610 1.433 2.977 2.867

FX 13 up to FX 16

Air dryer type Unit FX 13 FX 14 FX 15 FX 16 FX 13 FX 14 FX 15 FX 16Frequency Hz 50 50 50 50 60 60 60 60Electric power input W 1986 2553 3176 4108 2705 3586 4154 5337Electric power input hp 2.66 3.42 4.26 5.51 3.63 4.81 5.57 7.16Electric power input,compressor

W 1818 2013 2636 3586 2485 2776 3344 4527


hp 2.44 2.7 3.53 4.81 3.33 3.72 4.48 6.07

Electric power input,fan motor

W 150 540 540 540 220 810 810 810

Electric power input,fan motor

hp 0.20 0.72 0.72 0.72 0.30 1.09 1.09 1.09

Weight of the unit kg 128 146 158 165 128 146 158 165Weight of the unit lb 282 321 348 363 282 321 348 363Refrigerant R404A R404A R404A R404A R404A R404A R404A R404ATotal charge (approx.) kg 2.2 2.4 3.0 3.5 2.2 2.4 3.0 3.5

Instruction book

2920 7006 01 37

Air dryer type Unit FX 13 FX 14 FX 15 FX 16 FX 13 FX 14 FX 15 FX 16Total charge (approx.) lb 4.19 4.63 4.41 4.41 4.19 4.63 4.41 4.41

Instruction book

38 2920 7006 01

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FX10 Operation Manual

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