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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 -
safety valve
pops off.
Air leaks at
fittings.
Air leaks at or
inside check
valve
Air leaks at
pressure switch
release valve.
(if equipped)
Air leaks in air
tank or at air
tank welds.
Air leaks
between head
and valve plate.
TROUBLESHOOTING
Performing repairs may expose voltage sources, moving
parts or compressed air sources, moving parts or
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.
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.
or otherwise modify air
tank or it will weaken. The
tank can rupture or
explode.
Contact a Trained Service
Technician.
21- ENG
CORRECTION
Do not drill
into, weld
D28093
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