Atlas Copco GA 15 Instruction Book page 89

Instruction book
Procedure
1. Run the compressor until warm. Stop the compressor. Close the air outlet valve and switch off the
voltage. Depressurise the compressor by opening manual drain valve(s) (Dm, Dm1). Wait a few
minutes and depressurise the air receiver/oil tank (OT) by unscrewing oil filler plug (FC) just one turn
to permit any pressure in the system to escape.
2. Remove oil drain plug (DP1) and drain the oil by opening valve (Vd). Also remove the drain plug on
flexible (1) near the element outlet. To drain the oil in the oil cooler, remove the vent plug on the oil
cooler. As an alternative, it is also possible to loosen the flexible hoses to the oil cooler to allow air to
enter the cooler. Close the drain valve (Vd) and fit the plugs after draining.
3. Collect the oil and deliver it to the local collection service. Refit and tighten the drain and vent plugs
after draining.
Re-tighten the top connection of the oil cooler.
4. Remove the oil filter (OF). Clean the seat on the manifold. Oil the gasket of the new filter and screw
it into place. Tighten firmly by hand.
5. Remove filler plug (FC).
Insert an elbow coupling in the filler plug (FC) for easy filling. Fill the air receiver/oil tank (OT) with
oil until the level reaches the middle of sight-glass (Gl).
Take care that no dirt drops into the system. Refit and tighten filler plug (FC).
6. Run the compressor loaded for a few minutes. Stop the compressor and wait a few minutes to allow
the oil to settle.
7. Depressurise the system by unscrewing filler plug (FC) just one turn to permit any pressure in the
system to escape. Remove the plug.
Add oil until the sight-glass (Gl) is 3/4 full.
Take care that no dirt enters the system. Tighten the filler plug.
8. Reset the service warning after carrying out all service actions in the relevant Service Plan:
For compressors with Elektronikon® controller, see section
API459842
Oil system components of GA 15 up to GA 22
Calling up/resetting the service timer.
87