Troubleshooting - Porter-Cable N003568 Instruction Manual

age sources, compressed air, or moving parts. Before servicing unit 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 fittings.
Air leaks in air tank or at
air tank welds.
Air leaks between head
and valve plate.
Air leak from
valve.
Knocking Noise.
N003568

TROUBLESHOOTING

Risk of Unsafe Operation. Unit cycles automatically when
power is on. When servicing, you may be exposed to volt-
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.
Leaking seal.
safety Possible defect in
safety valve.
Possible defect in
safety valve.
CAUSE
16 - ENG
CORRECTION
Move On/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.
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.
Operate safety valve
manually by pulling on
ring. If valve still leaks,
it should be replaced.
Operate safety valve
manually by pulling on
ring. If valve still leaks,
it should be replaced.
Risk