Atlas Copco Oil-Injected Rotary Screw Compressor GA 22 AFF 8

Check the electrical connections. Tighten if required according to values indicated on service diagram

Check pressure and temperature readings

Check the condition of the air intake hose of the air filter

On Full-Feature units: clean condenser of dryer and replace the filter mesh of the drain

Test temperature shutdown function

Sign off on the compressor maintenance

CAUTION! Never use a high pressure water jet to clean the compressor

Stop the compressor, close the air outlet valve and switch off the voltage

Cover all parts under the coolers

Remove any dirt from the coolers with a fibre brush. Never use a wire brush or metal objects

Next, clean with an air jet in the reverse direction to normal flow. Use low pressure air. If necessary, the pressure may be increased up to 6 bar(e) (87 psig)

Is it necessary to wash the coolers with a cleaning agent?

If it is necessary to wash the coolers with a cleaning agent, consult Atlas Copco

Sign off on the coolers cleaning

WARNING! Always 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.

If the compressor is equipped with an Energy Recovery unit, also drain the oil in the heat exchanger.

Run the compressor until warm. Stop the compressor. Close the air outlet valve and switch off the voltage.

Depressurize the compressor by opening the manual drain valve(s). Wait a few minutes and depressurize the air receiver/oil tank by unscrewing oil filler plug (FC) just one turn to permit any pressure in the system to escape.

Open the filler plug (FC) and drain the oil by opening the valve at the bottom of the oil tank (OT).

Also remove the drain plug near the element outlet. Close the drain valve and fit the plugs after draining.

WARNING! The operator must apply all relevant Safety precautions

Stop the compressor, 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.

Wait 5 minutes and remove the oil separator (OS).

Clean the seat on the manifold.

Oil the gasket of the new separator and screw it into place.

Check that condensate is discharged during loading

Check the service indicator on the DD and PD filters (if provided);