Atlas Copco Oil-Injected Rotary Screw Compressor GA7VSD+

Perform all the actions for 4000 hrs

Replace the filter elements of the electric cabinet

Replace the non return valve of the scavenge line and blow out the restriction nozzle

Replace the minimum pressure valve, and replace the thermostatic valve. Remove carefully

Replace the electronic drain valve

Check for possible air and oil leakages

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 and stop the compressor

Close the air outlet valve and switch off the voltage

Wait 3 minutes for the compressor to depressurise the vessel

Open the condensate drain valve to depressurise the cooler. (see condensate system) and close again

Unscrew the oil filler plug (FC) just one turn to permit any remaining pressure in the system to escape

Cover the duct of the heat sink on the electric cabinet

NOTE! The safety valve (SV) test can only be performed by authorized personnel and is protected by a security code

WARNING! No adjustments are allowed. Never run the compressor without safety valve

Safety valve opens at the set pressure

Safety valve needs replacement?

Atlas Copco's Roto-Foodgrade Fluid is a unique high quality synthetic lubricant, specially created for oil- injected screw compressors that provide air for the food industry. This lubricant keeps the compressor in excellent condition.

Enter the element outlet temperature

Select the exchange interval based on the temperatures

Was the Roto-Foodgrade Fluid replaced?

Sign off on the fluid replacement

Check coolers, clean if necessary

Remove the air filter element and inspect. Replace damaged or heavily contaminated elements

Check the filter elements of the electric cabinet. Replace if necessary