• Remove the oil separator (OS). Be aware that this filter has a left thread
connection.
• Collect the oil in a collector and deliver it to the local collection service. Refit the vent
plugs after draining.
5. • Close the oil drain valve (Do).
• Refit the drain hose at the top of the air receiver.
6. Clean the seat on the manifold. Lubricate the gasket of the new oil filter and screw it into
place. Tighten firmly by hand.
• Clean the seat on the manifold. Lubricate the gasket of the new oil separator and screw
it into place. Tighten firmly by hand.
7. Remove filler plug (FC).
Fill the air receiver with oil until the level reaches the filler neck.
Take care that no dirt drops into the system. Refit and tighten filler plug (FC).
8. Run the compressor loaded for a few minutes. Stop the compressor.
9. Close the air outlet valve and switch off the voltage.
• Wait 3 minutes for the compressor to depressurize the vessel.
• Open the condensate drain valve (Dm) to depressurize 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.
10. Fill the air receiver (AR) with oil until the level reaches the filler neck. (see Operating
instructions / During operation)
• Refit and tighten filler plug (FC).
When the oil level is too low, go back to step 7.
8.6 Coolers
General
Keep the coolers clean to maintain their efficiency.
Instruction book
2920 7118 31 117
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