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.
7.6 Coolers
General
Keep the coolers clean to maintain their efficiency.
Procedure
• Stop the compressor, close the air outlet valve and switch off the voltage.
• Cover all parts underneath the cooler.
• Remove the service plate (1) at the fan compartment.
Instruction book
2920 7110 05 93
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