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Risk of Unsafer Operation.
Performing
repairs may expose
voltage sources, moving parts, or compressed
air sources.
Personal
injury may occur. Before servicing:
Unplug or disconnect
electrical
supply to the air compressor,
bleed tank of pressure, and allow the air
compressor
to cool.
PROBLEM
Excessive tank
pressure - safety
valve pops off.
Air leaks at fit-
tings.
Air leaks at or
inside check
valve.
Air leaks at
pressure switch
release valve.
Air leaks in air
tank or at air
tank welds.
CAUSE
Pressure switch does not
shut off motor when
compressor
reaches
"cut-out"
pressure.
Pressure switch "cut-out"
too high.
Tube fittings are not tight
enough.
Check valve seat damaged.
Defective pressure switch
release valve.
Defective air tank.
Leaking seal.
Air leaks be-
tween head and
valve plate.
CORRECTION
Move On/Auto/Off
lever to
the "OFF" position,
if the unit
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 so-
lution. 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. Replace check
valve. Refer to the "To Re-
place or Clean Check Valve"
in the Service and Adjust-
ment section.
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.
A16751
20- ENG
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