FAD 5.5 to 12.0 m3/minPressures 5.5 to 15 bar

Rotary Screw Compressors

CSD Series

What do you expect from a compressed air system?

As a compressed air user, you expect maximum efficiency andreliability from your air system.

This sounds simple, but these advantages are influenced bymany different factors: energycosts, forexample, takenover the lifetimeof a com-pressor, add upto a multiple ofinvestmentcosts.

Efficient energy consumption therefore plays a vital role in theproduction of compressed air, as does reliability of the com-pressor. In many cases, a reliable compressed air supply isessential to guarantee maximum performance from valuableproduction systems.

Reliability also ensures a supply of constant quality compressed air that optimises efficiency of the air treatmentequipment downstream of the compressor.

With regards to sound protection, it is always better to keepnoise emissions to a minimum from the outset by using aquiet compressor rather than have to retro-fit sound protectionmeasures later on.

Last but not least, a truly efficient compressor is simple to maintain.

KAESER’s Solution:The CSD SeriesThe new CSD rotary screw compressorsfulfil every customer requirement:they are highly energy efficient, quieterthan quiet, require minimal maintenance,are extremely reliable and deliver thevery best in air quality. All of theseadvantages are aided through innovationsin compressor design, drive systems,cooling and ventilation, silencing andmaintenance methods. In summary, the new CSD series of rotary screw compressors is a meticulously engineered and reliable pro-duct range built to KAESER’s renownedhigh quality standards.

One-to-one drive - ultimate efficiencyThe CSD series is a range of compressors where the drive motor and the airendare designed to operate at the same low speed. This featuremakes possible direct coupling of the drive and compressionunits via a maintenance-free coupling, consequently avoiding thetransmission losses associated with gear driven units. One-to-onedrive reduces the number of components needed in comparisonwith gear drive, significantly increasing reliability and service life.Sound levels are also considerably lower. The benefits speak forthemselves: Efficient power transmission, optimal energyconsumption and reduced servicing / downtime costs.

Energy costsPotential energy savings

Maintenance costsCompressor system investment

CSD – The new standard in efficiency

Drive motor

Airend

Coupling

2980 rpm

Airend speed = Motor speed

Savings through logical designDirect intake ...

• ... of ambient air for cooling avoids pre-warming andensures excellent cooling. The difference between compressedair outlet and ambient temperature is only max. 7 K, whichreduces the energy requirement of downstream air dryingequipment.

• ... of drive motor cooling air from the surroundings ensuresreliable and effective motor cooling even under adverse conditions.

• ... of air for compression from outside the compressorcabinet improves compression efficiency; the position of the inletopening prevents pre-warming.

Three steps to greater efficiency:

3. Powerful Energy-Efficient RadialFanThe quiet and powerfulradial fan draws in coolambient air through thecooler. Its high residualthrust can deal with par-tial clogging of the coolerand still have enoughreserve to allow

connection of a long exhaust duct. In addition, theradial fan consumes significantly less drive powerthan conventional axial fans, saving even moreenergy.

2. One-to-one driveSome people talk ofdirect drive, but reallymean geared drive.Make sure you know thedifference. Maintenancecosts and transmissionlosses are virtuallyeliminated, as the motorand airend on CSD units

are connected via a simple coupling. Compared withcompressors using small, high speed gear-drivenairends, one-to-one provides optimum use of power.

Quieter than quietThe silent radial fan and directly coupledmotor reduce noise at source. The realtechnical advance is in the combination ofthese components with the new coolingsystem. The separate air flow paths allowalmost hermetic silencing without

influencing cooling efficiency. With a sound power level of no morethan 70 dB(A), the CSD series is approximately 10 dB(A) quieterthan a comparable compressor. This is equivalent to a 90 percentnoise reduction. Normal conversation can take place right next to therunning compressor.

1. Energy-saving SIGMA PROFILEKAESER’s SIGMA Profileairends save up to 15%energy compared withconventional screw com-pressor rotor profiles.The airends in CSD unitsuse even further refinedrotors.

SIGMA PROFILE airendA specific drive power can be used to turn a smaller airend at high speed or a

larger airend at slow speed. Larger, low speed airends are more efficient, deliveringmore compressed air for the same drive power. That is why KAESER developedairends especially for the CSD series that precisely match the individual drive powerand motor speed of each machine in the range. The slightly higher cost of the largerairend is quickly recovered by the energy saved during operation.

CSD – Eight Decisive Advantages

Energy-saving one-to-one driveThe advantage of this drive is not just the elimination of transmission losses.

The motor and airend are joined by the coupling and its housing to form a compactand durable unit that, apart from greasing of the motor bearings, requires no regularmaintenance. Should the coupling ever need to be replaced it takes just a fewminutes without any disassembly of the unit. The opening in the housing is morethan large enough to replace the two coupling sections. Furthermore, the low airendspeed (2980 rpm) in CSD units ensures maximum efficiency and durability, which inturn leads to low compressed air costs.

Innovative radial fanQuiet and efficient – the most important features of a radial fan. Low

peripheral speed means low noise. Power consumption is up to 50 percent lowerthan a comparable axial fan. Another advantage is the high residual thrustdeveloped that allows the use of exhaust ducting with a pressure drop of up to 80Pa without the need for an additional extractor fan.

Efficient cooling system

In addition to improved cooling efficiency, the system has other benefits to

offer. The inside of the cabinet remains clean because surrounding air is drawn

through the cooler into the cooler box and then exhausted directly upward out of the

machine. Dirt particles in the cooling air collect mainly on the air intake side of the

cooler, on CSD units that means outside the cabinet. Any clogging is easily noticed

and quickly cleaned off without the need for any dismantling work. Operational

reliability is improved and maintenance work significantly reduced.

More air, more savings...

* FAD to ISO 1217: 1996, Annex C; **)Sound level to PN8NTC 2.3 at 1m distance, free-field measurement

Model

Weight

kg

Dimensions

L x W x H

FAD*) overall package at working pressure

m3/min

Sound level**)

dB(A)

Rated motorpower

kW

Max. workingpressure

bar

CSD Series - Technical Specifications

Optimised oil separation systemCSD machines are fitted with a new, even more efficient separator system.

The cooling fluid is initially separated from the compressed air by centrifugal force inthe separator tank. Only a minimal amount of fluid remains to be removed by thehigh capacity, deep-bed filter in the separator cartridge. These two factors doublethe operational life of the cartridge compared with conventional systems and ensureminimum aerosol content in the compressed air delivery (< 1 mg/m3). The improvedair quality eases the burden on the downstream air treatment components. Theoptional filter pressure drop monitoring set further enhances efficient operation.

Synthetic coolant and special fluid filterThe synthetic cooling medium SIGMA FLUID makes possible an extension of

the fluid change interval to over 6000 hours. However, as a preventative protectionmeasure for your equipment, we strongly recommend that a fluid analysis be carriedout after 6000 operating hours due to the varied nature of environmental and intakeconditions. Less SIGMA FLUID is consumed in comparison with mineral oils and itsreduced emulsifying tendency simplifies condensate treatment and reduces disposalcosts. A specially developed glass fibre fluid filter with enhanced contaminationabsorption capability is able to clean the cooling fluid more effectively, which is whythe maintenance service interval has been able to be significantly increased. Thefluid filter and SIGMA FLUID reduce service costs and increase operational reliability.

Easy maintenanceAll models feature high quality, durable components that are positioned

logically and contribute to the outstanding performance and reliability of these com-pressor packages. Component accessibility is made simple through wide openingdoors, easy lift off panels and a sensible design that ensures unrivalled ease ofmaintenance. The rear and left side of CSD units can be positioned right next to awall to maximise use of space.

SIGMA CONTROLBased on robust PC architecture, the SIGMA CONTROL offers the possibility

of Dual, Quadro, Vario and Continuous control. Clearly marked navigation and inputkeys on the user interface are used to move around within the menu options of thefour line alpha-numeric display. This powerful compressor controller can also displayinformation in any 1 of 30 selectable languages at just the press of a button. TheSIGMA Control automatically controls and monitors the compressor package. The Profibus interface enables exchange of data and operational parameters allowingthe SIGMA Control to communicate with other air management systems such as theSIGMA Air Manager. Connection of a modem even allows maintenance and alarmmessages to be sent via SMS to relevant service locations.

CSD 82

CSD 102

CSD 122

7.5

10

13

7.5

10

13

7.5

10

13

8

11

15

8

11

15

8

11

15

45

55

75

69

69

71

1260

1300

1330

1650 x 1041 x 1865

1650 x 1041 x 1865

1650 x 1041 x 1865

8.25

6.9

5.5

10.2

8.2

6.75

12.0

10.05

8.07

The rated motor powers given in the technicalspecifications below are reference points forselection of a suitable CSD compressor system.

Please contact KAESER for specific FAD and motoroutput data relating to other working pressures.

AftercoolingFluid coolingInlet airMotor cooling air

www.kaeser.com

1

2

3

4 8

7

6

5

Max.workingpressure

barCSD

298

0rp

m

SIGMA PROFILE airendA specific drive power can be used to turn a smaller airend at high speed or a

larger airend at slow speed. Larger, low speed airends are more efficient, deliveringmore compressed air for the same drive power. That is why KAESER developedairends especially for the CSD series that precisely match the individual drive powerand motor speed of each machine in the range. The slightly higher cost of the largerairend is quickly recovered by the energy saved during operation.

CSD – Eight Decisive Advantages

Energy-saving one-to-one driveThe advantage of this drive is not just the elimination of transmission losses.

The motor and airend are joined by the coupling and its housing to form a compactand durable unit that, apart from greasing of the motor bearings, requires no regularmaintenance. Should the coupling ever need to be replaced it takes just a fewminutes without any disassembly of the unit. The opening in the housing is morethan large enough to replace the two coupling sections. Furthermore, the low airendspeed (2980 rpm) in CSD units ensures maximum efficiency and durability, which inturn leads to low compressed air costs.

Innovative radial fanQuiet and efficient – the most important features of a radial fan. Low

peripheral speed means low noise. Power consumption is up to 50 percent lowerthan a comparable axial fan. Another advantage is the high residual thrustdeveloped that allows the use of exhaust ducting with a pressure drop of up to 80Pa without the need for an additional extractor fan.

Efficient cooling system

In addition to improved cooling efficiency, the system has other benefits to

offer. The inside of the cabinet remains clean because surrounding air is drawn

through the cooler into the cooler box and then exhausted directly upward out of the

machine. Dirt particles in the cooling air collect mainly on the air intake side of the

cooler, on CSD units that means outside the cabinet. Any clogging is easily noticed

and quickly cleaned off without the need for any dismantling work. Operational

reliability is improved and maintenance work significantly reduced.

More air, more savings...

* FAD to ISO 1217: 1996, Annex C; **)Sound level to PN8NTC 2.3 at 1m distance, free-field measurement

Model

Weight

kg

Dimensions

L x W x H

FAD*) overall package at working pressure

m3/min

Sound level**)

dB(A)

Rated motorpower

kW

Max. workingpressure

bar

CSD Series - Technical Specifications

Optimised oil separation systemCSD machines are fitted with a new, even more efficient separator system.

The cooling fluid is initially separated from the compressed air by centrifugal force inthe separator tank. Only a minimal amount of fluid remains to be removed by thehigh capacity, deep-bed filter in the separator cartridge. These two factors doublethe operational life of the cartridge compared with conventional systems and ensureminimum aerosol content in the compressed air delivery (< 1 mg/m3). The improvedair quality eases the burden on the downstream air treatment components. Theoptional filter pressure drop monitoring set further enhances efficient operation.

Synthetic coolant and special fluid filterThe synthetic cooling medium SIGMA FLUID makes possible an extension of

the fluid change interval to over 6000 hours. However, as a preventative protectionmeasure for your equipment, we strongly recommend that a fluid analysis be carriedout after 6000 operating hours due to the varied nature of environmental and intakeconditions. Less SIGMA FLUID is consumed in comparison with mineral oils and itsreduced emulsifying tendency simplifies condensate treatment and reduces disposalcosts. A specially developed glass fibre fluid filter with enhanced contaminationabsorption capability is able to clean the cooling fluid more effectively, which is whythe maintenance service interval has been able to be significantly increased. Thefluid filter and SIGMA FLUID reduce service costs and increase operational reliability.

Easy maintenanceAll models feature high quality, durable components that are positioned

logically and contribute to the outstanding performance and reliability of these com-pressor packages. Component accessibility is made simple through wide openingdoors, easy lift off panels and a sensible design that ensures unrivalled ease ofmaintenance. The rear and left side of CSD units can be positioned right next to awall to maximise use of space.

SIGMA CONTROLBased on robust PC architecture, the SIGMA CONTROL offers the possibility

of Dual, Quadro, Vario and Continuous control. Clearly marked navigation and inputkeys on the user interface are used to move around within the menu options of thefour line alpha-numeric display. This powerful compressor controller can also displayinformation in any 1 of 30 selectable languages at just the press of a button. TheSIGMA Control automatically controls and monitors the compressor package. The Profibus interface enables exchange of data and operational parameters allowingthe SIGMA Control to communicate with other air management systems such as theSIGMA Air Manager. Connection of a modem even allows maintenance and alarmmessages to be sent via SMS to relevant service locations.

CSD 82

CSD 102

CSD 122

7.5

10

13

7.5

10

13

7.5

10

13

8

11

15

8

11

15

8

11

15

45

55

75

69

69

71

1260

1300

1330

1650 x 1041 x 1865

1650 x 1041 x 1865

1650 x 1041 x 1865

8.25

6.9

5.5

10.2

8.2

6.75

12.0

10.05

8.07

The rated motor powers given in the technicalspecifications below are reference points forselection of a suitable CSD compressor system.

Please contact KAESER for specific FAD and motoroutput data relating to other working pressures.

AftercoolingFluid coolingInlet airMotor cooling air

www.kaeser.com

1

2

3

4 8

7

6

5

Max.workingpressure

bar

CSD

298

0rp

m

Comprehensive design know-how

EquipmentDimensions:

Compressed air supply systems are oftenhighly complex and can only beefficiently operated in the long term ifcareful planning is implemented duringeach stage of design, system expansion

and modernisation. KESS (KAESER’sEnergy Saving Service) providescomprehensive analysis of your com-pressed air usage, enabling KAESER’sexperts to plan and design a system

that is specially tailoredto meet all of your com-pressed air requirements.The service combines triedand tested compressed aircomponents, user adviceand services with cutting-edge technology to ensuremaximum efficiency –KAESER air systemstypically operate at 95percent load capacity ormore.

Every KAESER com-pressed air system illus-trates KAESER’s commit-

ment to producing application-specificquality compressed air at the lowestpossible cost, combined withunsurpassed reliability. This standard is

Ergonomic control panelRed, yellow and greenLEDs show the opera-tional state of themachine at a glance.Also features a four-line plain text display,30 selectablelanguages, touch keys

with icons and a duty cycle indicator.

Prime functionsFully automatic monitoring and regulationof airend discharge temperature;monitoring of motor current, direction ofairend rotation, air filter, fluid filter andfluid separator cartridge, display of per-formance data, service intervals ofprimary components, operating hours,status data and event memory data.Selection of Dual, Quadro, Vario andContinuous control modes as required.

(For further information refer to SIGMA CONTROL/SIGMACONTROL BASIC brochure P-780)

achieved with products of thehighest quality and throughdecades of experience in designand construction of compressedair systems. Use this expertise toyour advantage and let KAESERdesign your compressed airsystem.

Valuable information and adviceregarding KAESER services,planning and analysis can befound under ‘Services’ on theKAESER website –www.kaeser.com.

1865

DriveDirect, torsional-elastic coupling, without gearing.

Electric motorHigh efficiency CEMEP EFF1 motorsconsume less power for greater output and are standard throughout therange of KAESER compressors. Themotors are protected to IP55 andconform to insulation Class F for greaterpower reserve.

Connection from motor to airendAirend with integral coupling flange.

Electrical componentsControl cabinet to IP 54, containingautomatic star-delta starter, motor over-load protection, control transformer andvolt-free contacts for ventilation control.

Fluid and airflowDry air intake filter with initialseparation, inlet and venting valves,fluid reservoir with three-stage separatorsystem, pressure relief valve,minimum pressure/check valve, ther-mostatic valve and fluid microfilter, allfully piped using newly-developed elasticcouplings.

CoolingThe standard version is air-cooled,separate aluminium coolers for com-pressed air and fluid, radial fan drivenby its own motor.

SIGMA CONTROLInterfaces for data communicationcomprising RS 232 for a modem orprinter, RS 485 for a slave compressorin base load sequencing mode and aProfibus DP interface for data networks.Prepared for Teleservice.

Complete unitReady for operation, fully automatic,super silenced, vibration damped, allpanels powder coated.

Sound insulationLined with washable plastic foam;maximum 70 dB (A) to PN8NTC 2.3 at1m distance, free-field measurement.

Vibration dampingDual antivibration mountings usingrubber bonded metal elements

AirendGenuine KAESER

rotary screw, single-stage airend withSIGMA PROFILE

and cooling fluid injection.

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Coo

ling

air

outle

t

Coo

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air

outle

t

Coo

ler

Cooling air inletfor cooler

Compressorinlet air

Motor inlet air

97980

Compressedair connection

R2

721

636

216

58

www.kaeser.com

1041

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KAESER KOMPRESSOREN GmbHP.O. Box 2143 – 96410 Coburg – GERMANY – Tel: +49 9561 640-0 – Fax: +49 9561 640130www.kaeser.com – e-mail: productinfo@kaeser.com

Aerosol oil≤ 0.001 mg/m3, particle retention > 0.01 µm

Aerosol oil≤ 0.01 mg/m3, particle retention > 0.01 µm

Aerosol oil≤ 0.01 mg/m3, particle retention > 1 µm

Aerosol oil ≤ 1 mg/m3, particle retention > 1 µm

Dairies, breweries

Choose the required grade of treatment according to your field of application:

Food and semi-luxury food production

Very clean conveying air, chemical plant

Air treatment using a refrigeration dryer (+3 °C pressure dew point)

For air mains subject to sub-zero temperatures: treatment systems with desiccant dryers (pressure dew point to -70 °C)

Pharmaceuticals

Weaving machines, photo labs

Paint spraying, powder coating

Packaging, control and instrument air

General works air, quality sandblasting

Shotblasting

Low quality shotblasting

Conveying air forwaste water systems

No quality requirements

Pharmaceuticals, dairies, breweries

Microchip production, optics,food and semi-luxury food production

Paint spraying

Photo labs

Process air, pharmaceuticals

Applications subject to sub-zerotemperatures, especially dryconveying air, paint spraying,fine pressure controllers

Explanation:

THNF=bag filtercleans dusty and highly contaminated intake air

ZK=centrifugal separatorremoves condensate

ED=ECO Drainelectronic level-controlled condensate drain

FB=prefilter 3 µmseparates liquid droplets and solid particles >3 µm, oil content ≤5 mg/m3

FC=prefilter 1 µmseparates oil droplets and solid particles >1 µm, oil content ≤1 mg/m3

FD=particulate filter 1 µmseparates dust particles (attrition) >1 µmFE=microfilter 0.01 ppmseparates aerosol oils and solid particles>0.01 µm, aerosol content ≤0.01 mg/m3

FF=microfilter 0.001 ppmseparates aerosol oils and solid particles>0.01 µm, oil content ≤0.001 mg/m3

FG=activated carbon filterfor adsorption of oil vapours, oil vapour content ≤0.003 mg/m3

FFG=combination filtercomprising FF and FG

RD=refrigeration dryerpressure dew point to +3 °C

DD=desiccant dryer for compressed air drying; DC series - heatlessregeneration, pressure dew point to -70 °C; DW, DN, DTL and DTW series - heat regenera-tion, pressure dew point to -40 °C

ACT=activated carbon adsorberfor adsorption of oil vapours, oil vapour content ≤0.003 mg/m3

FST= sterile filter for bacteria-free air

Aquamat = condensate treatment system

AMCS = air-main charging system

FSTSolids Oil BacteriaWater

Solids Oil BacteriaWater

A

B

A

C

B

D

E

G

1

1

4

4

4

4

4

4

4

4

1

2

1

1

1

2

G 72

H 73

I 93

J 98

1

1

1

1

1

1

2

3

3

4

4

5

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<

<<

<

<

<

<

<

ACT FF

FF

FE

FC

FB

FD

FD

ACT

A

A

B

C

F

11

11

11

12

11-3

1-3

1-3

1-3

1-3

2

B 11-31

<

<

<

<

<

<

<

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FST

FST

FE

KAESER rotary screw compressors

other machines

FFG

FE

FD

KA

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KA

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KA

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KA

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KA

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KA

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KA

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FE ED

RD ED Compressor

Aquamat

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Compressor THNF

THNF

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Contaminants:+ solids -

+ water -

+ oil -

+ bacteria -

Aerosol oil ≤ 0.003 mg/m3, particle retention > 0.01 µmsterile, odourless and taste-free

Aerosol oil ≤ 0.003 mg/m3, particle retention > 0.01 µm

Aerosol oil ≤ 0.003 mg/m3, particle retention > 1 µm

A

B

C

D Aerosol oil≤ 5 mg/m3, particle retention > 3 µmAerosol oil ≤ 5 mg/m3, particle retention > 1 µmUntreated

E

F

G

H

I

J

ZKRDFilters

Air receiver

Installation for heavily fluctuating air demandExamples: selection of treatment classes to ISO 8573-1

Filters

Air receiver

Installation for heavily fluctuating air demand

KA

ES

ER

DD FE ZK

KA

ES

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Clas

s

<0.

1

Pressure dewpoint

(x=liquid water in

mg/m3 )

–

–

–

–

–

0.1<

d<0.

5

100

100000

–

–

–

0.5<

d<1.0

1

1000

10000

–

–

–

–

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1.0<

d<5.0

0

10

500

1000

20000

µm

–

–

–

–

–

< 5

< 40

–

–

mg/

m3

–

–

–

–

–

< 5

< 10

–

–

mg/m3

<0.01

<0.1

<1.0

<5.0

–

–

–

–

–

<-70 °C

<-40 °C

<-20 °C

<+ 3 °C

<+ 7 °C

<+ 10 °C

x <0.5

0.5<x < 5.0

5.0<x <10.0

0

1

2

3

4

5

6

7

8

9

Degree of filtration:

Solid particlesMax. no. of particles per m3 with size d (µm)

ISO 85

73-1 Humidity

Oil con-centration

as specified by user

<

<

<

AMCS

AMCS

AMCS

AMCS

AMCS

AMCS

AMCS

AMCS

AMCS

AMCS