BE AC255 - Page 9

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CONDITION CAUSE CORRECTIVE
Compressor over heating 1. Undersized unit for air
requirements
2. Compressor location
3. Air leaks in the system
4. Restricted air filter
5. Improper grade or level
of oil
6. Worn, damage, or carbon
build up on valve
7. Carbon build up at after-
cooler tube or check
valve
1. Contact your dealer /
distributor
2. See installation section
3. Fix leaks
4. Clean or replace filter
5. Replace with SAE 30
Weight non-detergent
compressor oil
6. Clean, repair or replace
valves
7. Clean or replace
Pressure switch unloading
valve does not function
or leak air when unit is
operating or not operating
1. Pressure switch
unloading valve may be
dirty or faulty
2. Check valve may be dirty
or faulty
1. Clean, or replace
unloading valve
2. Clean, or replace check
valve
Water in air tank 1. Condensation in the air
tank during normal usage
1. Drain daily or install an
automatic drain
Oil leaks or appearance of
oil on the compressor
1. Spillage of oil when filling
2. Overfilling the crankcase
3. Improper grade of oil
4. Leak at oil filler plug
5. Oil leak at gasket,
cylinder or crankcase
6. Loose plug
7. Loose side or end plate
8. Oil seal leak
1. Wipe unit clean
2. Drain oil and fill to proper
level
3. Replace with proper
SAE 30 non-detergent
compressor oil
4. Tighten or replace oil
filler plug
5. Replace gaskets as
required
6. Tighten plug
7. Tighten plates
8. Replace oil seal
troubleshooting exploded view