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Risk of Unsafe Operation. Unit cycles automatically
when power is on. When performing maintenance, you
may be exposed to voltage sources, compressed air, or moving parts.
Personal injuries can occur. Before performing any maintenance or
repair, disconnect power source from the compressor and bleed off all air
pressure.
PROBLEM
Excessive
Pressure switch does
tank pressure
not 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.
Air leaks in air
Defective air tank.
tank or at air
tank welds.
Leaking seal.
Air leaks
between head
and valve plate.
TROUBLESHOOTING
CAUSE
25 - ENG
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
solution. DO NOT OVER
TIGHTEN.
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 the "To Replace
or Clean Check Valve" in the
Service and Adjustments
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.
A15256
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