10
12
trouble shooting
problem
possible Cause
CorreCtiVe aCtion
Insufficient
output, low
discharge
pressure
Clogged inlet filter.
Leaks in air lines, air valves,
fittings, etc...
Clean or replace as necessary.
Replace worn components as
necessary.
Drive belts slipping.
Tension V-belts.
Drain valve left open.
Close drain valve.
Defective pressure gauge.
Replace pressure gauge.
Leaking head gasket.
Replace head gasket.
Dirty or plugged inter cooler
tubes.
Remove and clean inter cooler
tubes.
Pressure switch adjusted too
low, or defective.
Make necessary adjustments.
Worn or defective compressor
valves.
Replace valves.
Worn piston, worn out rings.
Replace worn parts.
Restrictive check valve.
Clean check valve and replace
if necessary.
Motor stalls
or blows
breaker
Faulty check valve.
Valves incorrectly installed
Replace check valve.
Install valves correctly.
Drive belts too tight.
Tension V-belts.
Defective pressure switch.
Replace switch.
Defective Motor.
Replace Motor.
(Consult licensed electrician).
Power being supplied by
generator.
Consult licensed electrician
Water in
crankcase
oil gets dirty,
rusty valves
or cylinders
Cycle too short; compressor
does not operate long enough
to vaporize condensed mois-
ture during compression.
Allow for longer operating
cycle.
System pressure leaking back
through check valve when
compressor is stopped.
Check and replace check
valve if necessary.
Wrong oil being used.
Drain and replace with proper
oil
