Troubleshooting - Porter-Cable J0B BOSS C3151 Instruction Manual

Performing repairs may expose voltage sources, moving
parts or compressed air sources, moving parts or
compressed sir sources, Personal injury may occur. PHor to attempting
any repairs, unplug the air compressor and bleed off all sir tank air
pressure.
PROBLEM
Excessive tank
pressure - safet'
valve pops off.
Air leaks at
fittings.
Air leaks at or
inside check
valve.
Air leaks at
pressure switch
release valve,
Air leaks in air
tank or at air
tank welds.
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 vatve.
Defective air tank.
Air leaks Leaking seal.
between head
and valve plate.
D28379 20- ENG
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.
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 to the "To
Replace or Clean Check
Valve" in the "Service and
Adjustment" section.
Contact a Trained Service
Technician.
Air tank must be replaced.
Do not repair the leak.
Do not drill into, weld or
otherwise modify air tank
or it will weaken. The tan k
can rupture or explode.
Contact a Trained Service
Technician.