ER-series Air Compressors - High Efficiency and Oil-Free Technology

ER Series

ER-series

Air compressors provide clean. good quality oil-free compressed air With injected water into compression process.

High efficiency

The injected water of ER-series is the functions of sealant and coolant
Sealant : Injected water can reduce leakage between rotors and housing. which improved the compressor efficiency
by 15% as compared to dry screw compressor
Cooling : injected water IS mixed With compressed air and efficiently cool down and dissipate heat generated In
compress:on process The compresston ‘s near to Isothermal compresston

High reliability

The of the art design on arenas of ER series provide aw quality perfect performance and high reliability. free air is the trend of global world compressor market. Environment friendly, availability are important Issues to customers

Low maintenances intervals

Professional engineering design and precise machining with long bearing life The maintenance interval is enlarged

Oil-free Air Compressor application Industries

Isothermal compression

Heat generated in compression process is taken by Injecting water Into compression chamber Water film seals the gaps between rotors and housing to reduce Internal leakage The compression is nearly Isothermal compression in optimum efficiency- For theoretically adiabatic compression, Inlet at 20°C can be compressed at 7 bar (g) with over 250°c temperature With Injected water as coolant. the temperature of compression chamber can be cool down to 40°C in high efficiency and Isothermal

Drying
Agitation
Air blowing
Painting dressing
Chemical analysis
Instrument control
Bacteria cultivation

Petrochemical Industry
Steel and Hi-tech industries
Food and Chemical Industries
Powdered substance conveyance
Papermaking and Textile Industries
Electronics and Appliance industries
Pharmaceutical and Medical industries

Advantages of ER air-end

Direct coupling driven, low power loss
100%. oil free compressed air. ensure clean air and safety.
Splashing Oil lubrication on bearings. better than grease lubrication,
variable speed drive technology. ensure stable system pressure and energy saving

Dry air

Low Viscosity injected water is easily separated from compressed The separated compressed air is in 100% RH and can be easily dried by dryer,

Reliable sealing system

The airends of ER series are supported by precise roller bearings with oil lubrication the compression chamber and bearing chamber is separated by a buffer chamber with oil seal and water seal the leakage form oil side into compression chamber is avoided

Low noise

With injected water the ariend can be run in much lower speed compare to dry screw compressor With lower noise. The new design enclosure ensure the compressor is operated in low noise.

Environmental protection

Alloys and special surface treatment are applied to prevent any corrosion on the airend and components injected water filtered by high quality water filter to ensure clean, good quality water

ER 15-120 Specification

Model		ER15A	ER22A	ER30A	ER37A	ER30W
FA D. (m3fmin) (ISO 1217 1 Annex C)	7 bar (g)	2.2	3.4	4.7	5.8	4.7
	8 bar (g)	2.1	3.1	4.4	5.3	4.4
	9 bar (g)	2.0	3.0	4.3	5.0	4.3
Horsepower	kW (HP)	15 (20)	15 (20)	15 (20)	37 (50)	30 (40)
Voltage	V	220 / 380 / 415 / 440
Pressure control method	–	Inverter constant pressure control
Intake pressure & temp.	–	2-400 at atmospheric pressure
Drive method	–	Direct coupling
Discharge temperature	c	Air cooling < ambient temp. •24 C				Water cooling. < cooling water temp. +14c
Cooling water flow	L/min	–				100
Outline dimension	mm	1900	1900	2100	2100	2100
	mm	1100	1100	1200	1200	1200
	mm	1750	1750	1850	1850	1400
Weight	kg	970	1000	1370	1370	1170
Air outlet	inch	1	1	1 1/2	1 1/2	1 1/2

Model		ER37W	ER55W	ER75W	ER90W	ER120W
FA D. (m3fmin) (ISO 1217 1 Annex C)	7 bar (g)	5.8	9.5	12.3	16.0	19.7
	8 bar (g)	5.3	8,8	11.8	15.0	19.2
	9 bar (g)	5.0	8.1	11.3	14.0	17.5
Horsepower	kW (HP)	37 (50)	55 (75)	75 (100)	90 (120)	120 (160)
Voltage	V	220 / 380 / 415 / 440
Pressure control method	–	Inverter constant pressure control
Intake pressure & temp.	–	2-400 at atmospheric pressure
Drive method	–	Direct coupling
Discharge temperature	c	Water cooling. < cooling water temp. +14c
Cooling water flow	L/min	125	192	250	300	400
Outline dimension	mm	2100	2500	2500	3200	3200
	mm	1200	1460	1400	1500	1500
	mm	1400	1500	1500	1700	1700
Weight	kg	1200	1700	1850	2900	3000
Air outlet	inch	1 1/2	2	2	2 1/2	2 1/2

ER-series features

FS-Curtis inverter control unit

Except power saving VSD compressor unit also ensures

VSD compressor unit saving benefits

VSD compressor unit operating service life period can ensure operational cost savings as high as 35%