Atlas Copco ga55+ Instruction Book page 115

Instruction book
Position of the oil level gauge
Regularly check the oil level during loaded operation. The pointer of level gauge (Gl) must register in the green
range.
If the oil level is too low, press stop button (9). Wait until the compressor has stopped and depressurised and push
the emergency stop button (10) to avoid the compressor to start unexpectedly. Next, close the air outlet valve and
press the test button on top of the electronic water drain(s) (two water drains are provided on Full-Feature
compressors) until the air system between oil separator/air receiver vessel and outlet valve is fully
depressurised. See section Condensate system for location of the outlet valve and water drain.
Unscrew oil filler plug (FC) one turn to permit any pressure left in the system to escape. Wait a few minutes.
Remove the plug and add oil until the level reaches the filler opening. Fit and tighten the plug (FC).
On compressors with an Elektronikon® Graphic controller, unlock the emergency stop button (10), select the
STOP icon on the display and press reset before restarting.
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