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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
Excessive tank
Pressure switch does not
pressure -
shut off motor when
safety valve
compressor reaches "cut-
pops off.
out" pressure.
Pressure switch "cut-out"
too high.
Air leaks at
Tube fittings are not tight
fittings.
enough.
Air leaks at or
Check valve seat damaged.
inside check
valve
Air leaks at
Defective pressure switch
pressure switch
release valve.
release valve.
(if equipped)
Air leaks in air
Defective air tank.
tank or at air
tank welds.
Air leaks
Leaking seal.
between head
and valve plate.
TROUBLESHOOTING
CAUSE
21- ENG
CORRECTION
Set 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.
Tighten fittings where air can
be heard escaping. Check
fittings with soapy water
solution. DO NOT
OVERTIGHTEN.
A defective check valve
results in a constant air leak
at the pressure release valve
when there is pressure in the
tank and the compressor is
shut off. Contact a Trained
Service Technician to
replace check valve.
Contact a Trained Service
Technician.
Air tank must be replaced.
Do not repair the leak.
Risk of
Bursting.
Do not drill into, weld or
otherwise modify air tank
or it will weaken. The tank
can rupture or explode.
Contact a Trained Service
Technician.
D29795