Atlas Copco GA 30+ Instruction Book page 132

Initial start procedure
1. Check the oil level before starting.
The oil level should be between the oil filler neck (FC) and the top of the sight glass (Gl).
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If the compressor has not run for the past 6 months, it is strongly recommended to
improve the lubrication of the compressor element before starting.
To do so:
1. Disconnect the inlet hose.
2. Remove the unloader (UA).
3. Pour approximately 0.75 l (0.20 US gal, 0.17 Imp gal) of compressor oil into the
compressor element inlet. For oil specifications, see section
4. Reinstall the unloader and reconnect the inlet hose.
Make sure that all connections are tight.
Location of unloader
Instruction book
Oil specifications.
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