Atlas Copco Oil-Injected Rotary Screw Compressor GA37VSD-175-AFF456

Check air filter service indicator

Check that condensate is discharged during operation

WARNING! The operator must apply all relevant Safety precautions

Always drain the compressor oil at all drain points. Used oil left in the compressor can contaminate the oil system and can shorten the lifetime of the new oil

Never mix lubricants of different brands or types as they may not be compatible and the oil mix will have inferior properties. A label, indicating the type of oil filled ex-factory, is stuck on the air receiver/oil tank

Run the compressor until warm. Stop the compressor after 3 minutes of unloaded operation. Close the air outlet valve and switch off the voltage. Wait a few minutes and depressurise by unscrewing oil filler plug (FC) just one turn to permit any pressure in the system to escape

Air cooled units: loosen the vent plug (VP) of the oil cooler and wait for 5 minutes

Remove drain plug (DP1) and open drain valve (Dm)

Also drain the oil by removing the drain plug: on the check valve and on the gear casing

Collect the oil in a collector and deliver it to the local collection service. Refit and tighten the drain and vent plugs after draining

Warning: Depressurise the compressor before removing the valve

Safety valve unscrewed one or two turns and retightened

Compressor depressurised before valve removal

Safety valve tested on a separate air line

Did the valve open at the set pressure stamped on the valve?

If the valve did not open at the set pressure, it needs to be replaced

Sign off on the safety valve testing

Replace the filter element of the electric cabinet

Open the manual drain valve (Dm) to clean the filter of the automatic drain

Test the temperature shut-down function

On water-cooled units: check for possible water leakage

Is Atlas Copco Roto-Xtend Duty Fluid used?

Note: The oil separator element must also be replaced when the pressure drop over it exceeds 1 bar (14.5 psi).

Enter the pressure drop while the compressor is running loaded

Is the working pressure stable?

Is pressure difference monitoring available?

Any visible damage or corrosion on the oil separator vessel?

Enter the wall thickness of the oil separator vessel