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TROUBLESHOOTING
COALESCER PLUGGING
If the coalescer element has to be replaced frequently because it is plugging up, it is an indication
that foreign material may be entering the compressor inlet or the compressor oil is breaking down.
Compressor oil can break down prematurely for a number or reasons.
(1) Extreme operating temperature, (2) negligence in draining condensate from oil sump, (3) using
the improper type of oil, (4) dirty oil, (5) oil return nozzle plugged.
The complete air inlet system should be checked for leaks.
HIGH COMPRESSOR DISCHARGE TEMPERATURE
1. Check compressor oil level. Add oil if required (see Section for oil specifications).
2. Check thermal valve operation.
3. Clean outside of oil cooler.
4. Clean oil system (cooler) internally.
5. Check fan relay harness.
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