Atlas Copco U190 PACE KD WUX, Installation Manual, Page: 20 / 92

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AIR FLOW
Air drawn through the air filter (AFce) into the
compressor element (CE) is compressed. At the
element outlet, compressed air and oil pass into the air
receiver/oil separator (AR/OS).
The check valve (CV) prevents blow-back of
compressed air when the compressor is stopped. In
the air receiver/oil separator (AR/OS), most of the oil
is removed from the air/oil mixture.
The oil collects in the receiver and on the bottom of
the separator element.