17 - ENG
D23012
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving parts or compressed air sources,
moving parts or compressed air sources. Personal injury may occur. Prior to attempting
any repairs, unplug the air compressor and bleed off all air tank air pressure.
PROBLEM
CAUSE
CORRECTION
Pressure switch does not shut off
motor when compressor reaches
“cut-out” pressure.
Pressure switch “cut-out” too
high.
Move On/Auto/Off lever to the
“OFF” position, if the outfit does
not shut off contact a Trained
Service Technician.
Contact a Trained Service
Technician.
Excessive tank pressure - safety
valve pops off.
Tube fittings are not tight
Tighten fittings where air can be
heard escaping. Check fittings
with soapy water solution. DO
NOT OVERTIGHTEN.
Air leaks at fittings.
Air leaks at pressure switch
release valve.
Defective pressure switch
release valve.
Contact a Trained Service
Technician.
Air leaks in air tank or at air tank
welds.
Defective air tank.
Air tank must be replaced. Do
not repair the leak.
Do not drill into, weld or other-
wise modify air tank or it will
weaken. The tank can rupture or
explode.
Air leaks between head and
valve plate.
Leaking seal.
Contact a Trained Service
Technician.
Air leaks at or inside check valve
Check valve seat damaged.
A defective check valve results in
a constant air leak at the pres-
sure release valve when there is
pressure in the tank and the
compressor is shut off. Replace
check valve. Refer the “To
Replace or Clean Check Valve” in
the “Service and Adjustment”
Pressure reading on the regulat-
ed pressure gauge drops when
an accessory is used.
It is normal for “some” pressure
drop to occur.
If there is an excessive amount
of pressure drop when the
accessory is used, adjust the
regulator following the instruc-
tions in the “Description of
Operation” paragraph in the
“Operation Section.
NOTE:
Adjust the regulated
pressure under flow conditions
