Water cooled oil-free compressors by Kaeser Compressors

Equipment

Complete package

Ready for operation
Fully automatic
Super-soundproofing
Vibration dampening
Service-friendly design
For ambient temperatures up to +115 °F

Airend

Two-stage, oil-free compression rotary screw compressor with precision gearing as per AGMA Q13/DIN-Class 5
2nd compression stage with stainless steel rotors and jacket cooling
Rotors feature durable coating
Integrated oil tank with oil tank ventilation via a microfilter
Fiber-free pulsation dampeners downstream of both compression stages

Drive motor

Manufactured by SIEMENS
Premium and Super Premium Efficiency Motor
Continuous motor winding temperature monitoring
IP 55 protection

Cooling

Separate shell and tube heat exchangers with coated steel tube and CuNi10Fe pipes
Copper-soldered plate-type heat exchanger as gear oil cooler

Electrical components

Control cabinet to IP 54
Switching cabinet ventilation
Automatic wye-delta protection combination
Control transformer

SIGMA CONTROL 2

Plain text display
30 selectable languages
Soft-touch keys with icons
Traffic-light LEDs for at-a-glance operational status
Fully automatic monitoring and control
Dual, Quadro, Vario and Continuous control included as standard
Interfaces: Ethernet
Optional communication modules for Profibus DP, Modbus, Profinet and DeviceNet
SD-card slot for data logging and updates
RFID reader
Web server

SIGMA CONTROL 2 controller

Quality in detail

Hydraulic inlet valve

The hydraulic inlet valves in Kaeser's oil-free rotary screw compressors are unaffected by contamination and condensate. This makes them more reliable and easier to maintain than pneumatic valves.

Fiber-free pulsation dampeners

Kaeser's new fiber-free pulsation dampeners keep pressure losses to an absolute minimum, help maintain consistent air quality and, unlike fiber versions, eliminate the possibility of compressed air contamination.

Reliable oil reservoir venting

The microfilter in the oil tank venting system prevents the intake of oil-laden air. This ensures compressed air quality is maintained at all times.

Highly efficient condensate separator

Thanks to its flow-optimized design, the newly developed condensate separator reliably separates the condensate downstream from the air coolers, and with minimal pressure loss.

Options

Bolt-down machine mounts

Machine mounts for bolting the unit to the floor

Heat recovery

Integrated heat exchanger system including parallel shell and tube heat exchangers, heat exchanger (water/water), pump, expansion valve, and water control valves

Hot air connection

Direct use of the hot compressed air, e.g. for heat regenerating desiccant dryer or as hot process air.
With certain models, the required hot air temperature can be controlled in ranges.

Maximum savings with energy recovery

Efficient and convenient use of recyclable compressor heat

With an integrated heat recovery module, recyclable compressor heat can be used for hot air space or process heating, as well as for heating of service or process water to temperatures up to 90 °C. This makes it possible to achieve an amortization period of less than a year.

Hot water up to +90 °C

Hot water from heat recovery up to +90°C

Recovered heat energy can be used in any number of ways. Heat recovery provides warm water up to 90 °C as appropriate for specific applications.

Heat recovery a win

Maximum heat recovery with rotary screw compressors.

Amazingly, 100 percent of the electrical energy input to a compressor is converted into heat. Of this, up to 96 percent is available for heat recovery purposes.

Maximum availability despite heat recovery

Maximum availability with optional internal water circulation loop.

During maintenance work on the water system of the heat recovery system other than the compressor, an optionally available complete internal water circuit (with pump, expansion valve, safety valve, etc.) ensures reliable compressor performance.

Reliable heat recovery for your application

For self-protection purposes, compressors with integrated heat recovery are equipped with a secondary water system. This separation into a primary and secondary water system not only ensures reliable compressed air supply availability with optimum heat recovery performance, but also provides the flexibility of coupling or decoupling the oil and jacket cooling to / from the heat recovery system according to required heating demand.

Technical specifications CSG-2 W

Standard version

Model	CSG 55-2 W		CSG 70-2 W			CSG 90-2 W
Working pressure psi	90	125	60	90	125	60	90	125	145
Flow rate complete system at working pressure acfm	253	198	350	304	251	396	348	302	278
Max. positive pressure psi	90	125	60	90	125	60	90	125	145
Nominal motor output hp	50		60			75
Dimensions W x D x H in	98 x 65 x 77		98 x 65 x 77			98 x 65 x 77
Compressed air connection	2½ ANSI class 150		2½ ANSI class 150			2½ ANSI class 150
Sound pressure level dB(A)	65		65			66
Weight lb	5,004		5,093			5,236

Model	CSG 120-2 W				CSG 130-2 W
Working pressure psi	60	90	125	145	125	145
Flow rate complete system at working pressure acfm	465	464	426		462	461
Max. positive pressure psi	90		125	145	125	145
Nominal motor output hp	100				125
Dimensions W x D x H in	98 x 65 x 77				98 x 65 x 77
Compressed air connection	2½ ANSI class 150				2½ ANSI class 150
Sound pressure level dB(A)	67				69
Weight lb	5,545				5,820

T version

Model	CSG 55-2 T W		CSG 70-2 T W			CSG 90-2 T W
Working pressure psi	90	125	60	90	125	60	90	125	145
Flow rate complete system at working pressure acfm	253	198	350	304	251	396	348	302	278
Max. positive pressure psi	90	125	60	90	125	60	90	125	145
Nominal motor output hp	50		60			75
Pressure dew point °F	37		37			37
Refrigerated dryer	ABT 130		ABT 130			ABT 130
Dimensions W x D x H in	112 x 65 x 77		112 x 65 x 77			112 x 65 x 77
Compressed air connection	2½ ANSI class 150		2½ ANSI class 150			2½ ANSI class 150
Sound pressure level dB(A)	65		65			66
Weight lb	5,556		5,644			5,787

Model	CSG 120-2 T W		CSG 130-2 T W
Working pressure psi	125	145	125	145
Flow rate complete system at working pressure acfm	426		462	461
Max. positive pressure psi	125	145	125	145
Nominal motor output hp	100		125
Pressure dew point °F	37		37
Refrigerated dryer	ABT 130		ABT 130
Dimensions W x D x H in	112 x 65 x 77		112 x 65 x 77
Compressed air connection	2½ ANSI class 150		2½ ANSI class 150
Sound pressure level dB(A)	67		69
Weight lb	6,096		6,371

SFC version

Model	CSG 70-2 SFC W				CSG 90-2 SFC W				CSG 120-2 SFC W
Working pressure psi	60	90	125	145	60	90	125	145	60	90	125	145
Flow rate complete system at working pressure acfm	107 - 346	107 - 307	114 - 263	131 - 238	124 - 417	128 - 385	137 - 334	140 - 309	148 - 472	146 - 471	146 - 450	149 - 424
Max. positive pressure psi	145				90		145		145
Nominal motor output hp	75				75				100
Dimensions W x D x H in	98 x 65 x 77				98 x 65 x 77				98 x 65 x 77
Compressed air connection	2½ ANSI class 150				2½ ANSI class 150				2½ ANSI class 150
Sound pressure level dB(A)	65				67				68
Weight lb	5,203				5,203				5,291

Model	CSG 130-2 SFC W
Working pressure psi	60	90	125	145
Flow rate complete system at working pressure acfm	155 - 482	153 - 480	150 - 479	148 - 478
Max. positive pressure psi	145
Nominal motor output hp	125
Dimensions W x D x H in	98 x 65 x 77
Compressed air connection	2½ ANSI class 150
Sound pressure level dB(A)	69
Weight lb	5,467

T-SFC version

Model	CSG 70-2 T SFC W				CSG 90-2 T SFC W				CSG 120-2 T SFC W
Working pressure psi	60	90	125	145	60	90	125	145	90	125	145
Flow rate complete system at working pressure acfm	107 - 346	107 - 307	114 - 263	131 - 238	124 - 417	128 - 385	137 - 334	140 - 309	146 - 471	146 - 450	149 - 424
Max. positive pressure psi	145				90		145		145
Nominal motor output hp	75				75				100
Pressure dew point °F	37				37				37
Refrigerated dryer
Dimensions W x D x H in	112 x 65 x 77				112 x 65 x 77				112 x 65 x 77
Compressed air connection	2½ ANSI class 150				2½ ANSI class 150				2½ ANSI class 150
Sound pressure level dB(A)	65				67				68
Weight lb	5,754				5,754				5,842

Model	CSG 130-2 T SFC W
Working pressure psi	90	125	145
Flow rate complete system at working pressure acfm	153 - 480	150 - 479	148 - 478
Max. positive pressure psi	145
Nominal motor output hp	125
Pressure dew point °F	37
Refrigerated dryer
Dimensions W x D x H in	112 x 65 x 77
Compressed air connection	2½ ANSI class 150
Sound pressure level dB(A)	69
Weight lb	6,019

RD version

Model	CSG 55-2 i.HOC W		CSG 70-2 i.HOC W		CSG 90-2 i.HOC W
Working pressure psi	90	125	90	125	90	125	145
Flow rate complete system at working pressure acfm	253	198	304	251	348	302	278
Max. positive pressure psi	90	125	90	125	90	125	145
Nominal motor output hp	50		60		75
Pressure dew point °F	-15	-30	-13	-28	-11	-27	-31
Dimensions W x D x H in	124 x 65 x 77		124 x 65 x 77		124 x 65 x 77
Compressed air connection	2½ ANSI class 150		2½ ANSI class 150		2½ ANSI class 150
Sound pressure level dB(A)	65		65		66
Weight lb	6,581		6,669		6,812

Model	CSG 120-2 i.HOC W			CSG 130-2 i.HOC W
Working pressure psi	90	125	145	125	145
Flow rate complete system at working pressure acfm	464	426		462	461
Max. positive pressure psi	90	125	145	125	145
Nominal motor output hp	100			125
Pressure dew point °F	-5	-23	-28	-22	-27
Dimensions W x D x H in	124 x 65 x 77			124 x 65 x 77
Compressed air connection	2½ ANSI class 150			2½ ANSI class 150
Sound pressure level dB(A)	67			69
Weight lb	7,121			7,397

RD SFC version

Model	CSG 70-2 i.HOC SFC W			CSG 90-2 i.HOC SFC W			CSG 120-2 i.HOC SFC W
Working pressure psi	90	125	145	90	125	145	90	125	145
Flow rate complete system at working pressure acfm	107 - 307	114 - 263	131 - 238	128 - 385	137 - 334	140 - 309	146 - 471	146 - 450	149 - 424
Max. positive pressure psi	145			90	145		145
Nominal motor output hp	75			75			100
Pressure dew point °F	-13	-28	-32	-9	-26	-30	-6	-22	-28
Dimensions W x D x H in	124 x 65 x 77			124 x 65 x 77			124 x 65 x 77
Compressed air connection	2½ ANSI class 150			2½ ANSI class 150			2½ ANSI class 150
Sound pressure level dB(A)	65			67			68
Weight lb	6,790			6,790			6,878

Model	CSG 130-2 i.HOC SFC W
Working pressure psi	90	125	145
Flow rate complete system at working pressure acfm	153 - 480	150 - 479	148 - 478
Max. positive pressure psi	145
Nominal motor output hp	125
Pressure dew point °F	-6	-22	-26
Dimensions W x D x H in	124 x 65 x 77
Compressed air connection	2½ ANSI class 150
Sound pressure level dB(A)	69
Weight lb	7,055

Add-on refrigerated dryer

Model	ABT 130
Power consumption	2.4
Pressure dew point °F	37
Refrigerant	R-513A
Global warming potential —	631
Refrigerant volume lb	3.3
Refrigerant mass as CO₂ equivalent t	0.9
Hermetic refrigeration circuit	-

Technical specifications DSG-2 W

Standard version

Model	DSG 140-2 W			DSG 180-2 W				DSG 220-2 W
Working pressure psi	90	125	145	60	90	125	145	60	90	125	145
Flow rate complete system at working pressure acfm	579	576	512	821	692	689	576	910	819	780	689
Max. positive pressure psi	125		145	60	125		145	60	90	125	145
Nominal motor output hp	125			150				175
Dimensions W x D x H in	135 x 69 x 81			135 x 69 x 81				135 x 69 x 81
Compressed air connection	3 ANSI class 150			3 ANSI class 150				3 ANSI class 150
Sound pressure level dB(A)	69			70				71
Weight lb	6,834			7,165				7,385

Model	DSG 260-2 W				DSG 290-2 W
Working pressure psi	60	90	125	145	90	125	145
Flow rate complete system at working pressure acfm	966	964	908	816	963	961
Max. positive pressure psi	90		125	145	125		145
Nominal motor output hp	200				250
Dimensions W x D x H in	135 x 69 x 81				135 x 69 x 81
Compressed air connection	3 ANSI class 150				3 ANSI class 150
Sound pressure level dB(A)	74				75
Weight lb	7,716				8,157

SFC version

Model	DSG 180-2 SFC W				DSG 220-2 SFC W				DSG 260-2 SFC W
Working pressure psi	60	90	125	145	60	90	125	145	60	90	125	145
Flow rate complete system at working pressure acfm	305 - 795	332 - 761	312 - 665	337 - 615	274 - 823	295 - 821	320 - 773	378 - 737	305 - 967	330 - 966	347 - 911	364 - 858
Max. positive pressure psi	100		145		125			145	110		145
Nominal motor output hp	150				175				200
Dimensions W x D x H in	135 x 69 x 81				135 x 69 x 81				135 x 69 x 81
Compressed air connection	3 ANSI class 150				3 ANSI class 150				3 ANSI class 150
Sound pressure level dB(A)	71				72				75
Weight lb	8,488				8,708				9,039

Model	DSG 290-2 SFC W
Working pressure psi	60	90	125	145
Flow rate complete system at working pressure acfm	323 - 1,061	367 - 1,060	418 - 1,058	447 - 1,057
Max. positive pressure psi	145
Nominal motor output hp	250
Dimensions W x D x H in	135 x 69 x 81
Compressed air connection	3 ANSI class 150
Sound pressure level dB(A)	76
Weight lb	9,480

RD version

Model	DSG 140-2 i.HOC W			DSG 180-2 i.HOC W			DSG 220-2 i.HOC W
Working pressure psi	90	125	145	90	125	145	90	125	145
Flow rate complete system at working pressure acfm	579	576	512	692	689	576	819	780	689
Max. positive pressure psi	125		145	125		145	90	125	145
Nominal motor output hp	125			150			175
Pressure dew point °F	-13	-30	-33	-14	-30	-33	-14	-30	-33
Dimensions W x D x H in	168 x 69 x 81			168 x 69 x 81			168 x 69 x 81
Compressed air connection	3 ANSI class 150			3 ANSI class 150			3 ANSI class 150
Sound pressure level dB(A)	69			70			71
Weight lb	9,259			9,590			9,811

Model	DSG 260-2 i.HOC W			DSG 290-2 i.HOC W
Working pressure psi	90	125	145	90	125	145
Flow rate complete system at working pressure acfm	964	908	816	963	961
Max. positive pressure psi	90	125	145	125		145
Nominal motor output hp	200			250
Pressure dew point °F	-14	-29	-33	-15	-29	-32
Dimensions W x D x H in	168 x 69 x 81			168 x 69 x 81
Compressed air connection	3 ANSI class 150			3 ANSI class 150
Sound pressure level dB(A)	74			75
Weight lb	10,141			10,582

RD SFC version

Model	DSG 180-2 i.HOC SFC W			DSG 220-2 i.HOC SFC W			DSG 260-2 i.HOC SFC W
Working pressure psi	90	125	145	90	125	145	90	125	145
Flow rate complete system at working pressure acfm	332 - 761	312 - 665	337 - 615	295 - 821	320 - 773	378 - 737	330 - 966	347 - 911	364 - 858
Max. positive pressure psi	100	145		125		145	110	145
Nominal motor output hp	150			175			200
Pressure dew point °F	-14	-29	-33	-15	-30	-33	-15	-29	-33
Dimensions W x D x H in	168 x 69 x 81			168 x 69 x 81			168 x 69 x 81
Compressed air connection	3 ANSI class 150			3 ANSI class 150			3 ANSI class 150
Sound pressure level dB(A)	71			72			75
Weight lb	10,913			11,133			11,464

Model	DSG 290-2 i.HOC SFC W
Working pressure psi	90	125	145
Flow rate complete system at working pressure acfm	367 - 1,060	418 - 1,058	447 - 1,057
Max. positive pressure psi	145
Nominal motor output hp	250
Pressure dew point °F	-14	-29	-32
Dimensions W x D x H in	168 x 69 x 81
Compressed air connection	3 ANSI class 150
Sound pressure level dB(A)	76
Weight lb	11,905

Technical specifications FSG-2 W

Standard version

Model	FSG 300-2 W				FSG 350-2 W				FSG 420-2 W
Working pressure psi	60	90	125	145	60	90	125	145	60	90	125	145
Flow rate complete system at working pressure acfm	1,269	1,144	1,006	795	1,391	1,388	1,261	1,148	1,747	1,589	1,501	1,261
Max. positive pressure psi	60	90	125	145	90		125	145	60	90	125	145
Nominal motor output hp	250				300				350
Dimensions W x D x H in	144 x 82 x 87				144 x 82 x 87				144 x 82 x 87
Compressed air connection	6 ANSI class 150				6 ANSI class 150				6 ANSI class 150
Sound pressure level dB(A)	74				75				76
Weight lb	11,574				12,015				12,456

Model	FSG 500-2 W			FSG 501-2 W
Working pressure psi	90	125	145	145
Flow rate complete system at working pressure acfm	1,772	1,769	1,586	1,766
Max. positive pressure psi	125		145	145
Nominal motor output hp	450			450
Dimensions W x D x H in	144 x 82 x 87			144 x 82 x 87
Compressed air connection	6 ANSI class 150			6 ANSI class 150
Sound pressure level dB(A)	76			77
Weight lb	13,118			13,118

SFC version

Model	FSG 420-2 SFC W				FSG 500-2 SFC W
Working pressure psi	60	90	125	145	60	90	125	145
Flow rate complete system at working pressure acfm	550 - 1,786	566 - 1,608	608 - 1,499	653 - 1,400	550 - 1,793	604 - 1,790	666 - 1,788	702 - 1,700
Max. positive pressure psi	90		145		145
Nominal motor output hp	350				450
Dimensions W x D x H in	144 x 82 x 87				144 x 82 x 87
Compressed air connection	6 ANSI class 150				6 ANSI class 150
Sound pressure level dB(A)	77				77
Weight lb	13,779				14,771

RD version

Model	FSG 300-2 i.HOC W			FSG 350-2 i.HOC W		FSG 420-2 i.HOC W
Working pressure psi	90	125	145	125	145	90	125	145
Flow rate complete system at working pressure acfm	1,144	1,006	795	1,261	1,148	1,589	1,501	1,261
Max. positive pressure psi	90	125	145	125	145	90	125	145
Nominal motor output hp	250			300		350
Pressure dew point °F	-8	-26	-30	-26	-30	-10	-26	-30
Dimensions W x D x H in	176 x 82 x 87			176 x 82 x 87		176 x 82 x 87
Compressed air connection	6 ANSI class 150			6 ANSI class 150		6 ANSI class 150
Sound pressure level dB(A)	74			75		76
Weight lb	14,110			14,551		14,991

Model	FSG 500-2 i.HOC W			FSG 501-2 i.HOC W
Working pressure psi	90	125	145	145
Flow rate complete system at working pressure acfm	1,772	1,769	1,586	1,766
Max. positive pressure psi	125		145	145
Nominal motor output hp	450			450
Pressure dew point °F	-10	-26	-30	-30
Dimensions W x D x H in	176 x 82 x 87			176 x 82 x 87
Compressed air connection	6 ANSI class 150			6 ANSI class 150
Sound pressure level dB(A)	76			77
Weight lb	15,653			15,653

RD SFC version

Model	FSG 420-2 i.HOC SFC W			FSG 500-2 i.HOC SFC W
Working pressure psi	90	125	145	90	125	145
Flow rate complete system at working pressure acfm	566 - 1,608	608 - 1,499	653 - 1,400	604 - 1,790	666 - 1,788	702 - 1,700
Max. positive pressure psi	90	145		145
Nominal motor output hp	350			450
Pressure dew point °F	-10	-26	-30	-17	-27	-30
Dimensions W x D x H in	176 x 82 x 87			176 x 82 x 87
Compressed air connection	6 ANSI class 150			6 ANSI class 150
Sound pressure level dB(A)	77			77
Weight lb	16,314			17,306

Water-cooled oil-free air compressors

Compact energy-savers

Take a closer look at our water-cooled oil-free rotary screw compressors

Complete package

Airend

Drive motor

Cooling

Electrical components

SIGMA CONTROL 2

Hydraulic inlet valve

Fiber-free pulsation dampeners

Reliable oil reservoir venting

Highly efficient condensate separator

Bolt-down machine mounts

Heat recovery

Hot air connection

Efficient and convenient use of recyclable compressor heat

Hot water up to +90 °C

Heat recovery a win

Maximum availability despite heat recovery

Reliable heat recovery for your application

Standard version

T version

SFC version

T-SFC version

RD version

RD SFC version

Add-on refrigerated dryer

Standard version

SFC version

RD version

RD SFC version

Standard version

SFC version

RD version

RD SFC version

Quality compressed air for the dairy industry