Cooling System - Atlas Copco GA 75+ Instruction Book

Instruction book
Air pressure forces the oil from air receiver/oil separator (AR) through oil filter (OF) and oil stop valve (Vs)
to compressor element (E).
Bypass valve (BV) starts opening the supply from cooler (Co) when the oil temperature has increased to the
set point. At approx. 15 ˚C (27 ˚F) above the set point, all the oil flows through the oil cooler.
Oil stop valve (Vs) prevents the compressor element from flooding with oil when the compressor is stopped.
The valve is opened by element outlet pressure when the compressor is started.
2.4

Cooling system

Air-cooled compressors
References
A
B
C
D
E
Description
The cooling system on air-cooled compressors comprises air cooler (Ca) and oil cooler (Co).
The cooling air flow is generated by fan (FN).
2920 7109 60
Description
Intake air
Air/oil mixture
Oil
Wet compressed air
Condensate
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