Troubleshooting - Porter-Cable CPL55GH8W Instruction Manual

pressed 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.
Continuous air
leak at unloader
valve.
Air leaks in air
tank or at air
tank welds.
Air leaks
between head
and valve plate.
Air leaks from
safety valve.
D26998

TROUBLESHOOTING

Performing repairs may expose voltage sources, moving
parts or compressed air sources, moving parts or com-
CAUSE
Unloader valve does not
release pressure when tank
reaches "blow-off" pressure.
Tube fittings are not tight
enough.
Defective unloader valve.
Defective air tank.
Leaking seal.
Possible defect in safety
valve.
Unloader valve must be
replaced.
Tighten fittings where air can
be heard escaping. Check
fittings with soapy water
solution. DO NOT OVER-
TIGHTEN.
Turn off engine, move
unloader valve toggle lever
to vertical position. If air
leaks out of tank through
unloader valve, clean or
replace unloader valve.
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.
Operate safety valve manual-
ly by pulling on ring. If valve
still leaks, it should be
replaced.
22-ENG
CORRECTION
Do not drill
into, weld