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Symptom
Excessive oil consumption.
Air escapes from centrifugal
unloader when unit is running.
Air escapes from centrifugal
unloader when unit is stopped.
System does not alternate
(Duplex units only)
EN-14
RELEASED 02/Nov/2023 21:18:09 GMT
Possible Cause(s)
1. Dirty air filter.
2. Wrong oil viscosity.
3. Oil leaks.
4. Worn piston rings.
5. Scored cylinder.
1. Centrifugal unloader release valve dirty or
detective.
1. Check valve stuck in open position.
1. Starter tripped.
2. Loose wiring in alternator.
3. Defective alternator.
4. Defective motor.
Corrective Action
1. Clean or replace.
2. Refill with proper viscosity oil.
3. Tighten bolts. Replace gaskets.
4. Replace rings.
5. Replace cylinder.
1. Clean or replace valve.
1. Replace check valve.
Warning – Relieve tank pressure before
servicing.
1. Reset starter. If starter trips repeatedly, have
electrical system inspected by an electrician.
2. Check and tighten all wiring connections.
3. Replace alternator.
4. Replace motor.
47794361 Rev.A
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