21
Instruction book
9096 3313 00
Note:
The cooling fan is not provided on water-cooled compressors.
Description
In air receiver/oil separator (AR), most of the oil is removed from the air/oil mixture by centrifugal
action.The rest is removed by oil separator (OS). The oil collects in the lower part of air receiver/oil
separator (AR),which serves as an oil tank.
The oil system is provided with a thermostatic bypass valve (BV). When the oil temperature is below its
setpoint, bypass valve (BV) shuts off the supply to oil cooler (Co) and the oil cooler is bypassed.
Check valve (CV) prevents blow-back of compressed air when the compressor is stopped. Minimum
pressurevalve (Vp) prevents the receiver pressure (AR) from dropping below a minimum pressure during
unloadedoperation.
2.3
Oil system
Flow diagram
References
Description
1
For Workplace units, compressed air flow to the air outlet valve For Full-
Feature units, compressed air flow to the air dryer
A
Intake air
B
Air/oil mixture
C
Oil
D
Wet compressed air
F
Condensate
Summary of Contents for GA 55+
Page 1: ...GA 55 GA 75 GA 90 Instruction book Atlas Copco Oil injected rotary screw compressors ...
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Page 96: ...96 Instruction book 9096331300 6 Installation 6 1 Dimension drawings Centre of gravity ...
Page 98: ...98 Instruction book 9096331300 6 2 Installation proposal Compressor room example ...
Page 109: ...109 Instruction book 9096331300 ...
Page 123: ...123 Instruction book 9096331300 Procedure Oil system components Oil drain plugs ...
Page 145: ...145 Instruction book 9096331300 Notes ...
Page 146: ...146 Instruction book 9096331300 Notes ...
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