Atlas Copco Oil-Injected Rotary Screw Compressor GA37-7.5

Condensate discharged when pressing the test button on top of the electronic water drain?

On compressors with integrated dryer

Compressor stopped, air outlet valve closed and voltage switched off?

Any dirt removed from the condenser inlet with a vacuum cleaner?

Cleaned with an air jet in the reverse direction of the normal flow?

Use low pressure air. Keep the compressed air nozzle more than 30 cm away from the condenser to avoid damaging the of condenser fins

Dust removed from inside the dryer, e.g. with a vacuum cleaner?

Do not use water or solvents to clean the condenser

Sign off on the monthly maintenance

Is Atlas Copco Roto-Xtend Duty Fluid used?

Replace the oil separator element

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 and preferably with a stable working pressure.

Is pressure difference monitoring available?

Any visible damage or corrosion on the oil separator vessel?

Enter the minimum wall thickness of the oil separator vessel.

Sign off on the 8000 Hourly Oil-Injected Rotary Screw Compressor Maintenance

Is the outside of the electric motor clean for efficient cooling?

If necessary, remove dust with a brush and/or compressed air jet

The bearing at the non-drive end side is greased for life

The bearing at the drive end side is lubricated by the oil system

Sign off on the bearing maintenance

Instructions for air-cooled compressors

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

Cover all parts under the coolers

Remove the service plates at the fan compartment

Remove any dirt from the coolers with a fibre brush. Brush in the direction of the cooling fins

Also remove any dirt from the fan with a fibre brush

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)

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

Remove the cover used during cleaning

Open the condensate sample valve at the side of the compressor for 5 seconds and dispose of the collected condensate according to local regulations for oil containing water

Re-open the test valve and collect the condensate in the test bottle

Compare the turbidity of the sample with the 15 ppm turbidity reference bottle

Is the turbidity of the test sample more intense than the reference turbidity?

If the turbidity of the test sample is more intense than the reference turbidity, a request for servicing should be initiated, to be carried out within 2 weeks time.

The vertical position of the test outlet ensures that there is enough clean activated carbon left above this position to keep the condensate under 15 ppm for at least 2 weeks.

Sign off on the condensate check