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Performing
repairs may expose vomtage sources,
mov{ng
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 bmeed off all air tank air
pressure.
PROBLEM
Excessive tank
pressure - safety
valve pops off.
Air leaks at
fittings.
Air ieaks in air
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.
Defective air tank.
tank or at air
tank welds.
Air leaks
Leaking seal.
between head
and valve plate,
Air ieak from
safety valve.
Possible defect in safety
valve.
Possible defect in safety
valve.
Knocking Noise.
CORRECTION
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.
Tighten fittings where air
can be heard escaping.
Check fittings with soapy
water solution. Do Not
Overtighten,
Air tank must be replaced.
Do not repair the leak.
weld or otherwise modify
air tank or it will weaken.
The tank can rupture
or
expmode.
Contact a Trained Service
Technician.
Operate safety valve
manualiy by pulling on ring.
if valve still leaks, it should
be replaced.
Operate safety valve
manually by pulling on ring.
if vaIve stiIl leaks, it shouId
be replaced.
19-ENG
A08596
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