Porter-Cable C7501M Instruction Manual page 22

PROBLEM
Motor will not Fuse blown, circuit
run (continued) breaker tripped.
Safety Valve Pressure switch, check
on pump valve, or pump could be
"pops" out in need of servicing.
Knocking Noise Possible defect in
safety valve.
Defective check valve.
Loose pulley.
Loose flywheel.
Compressor mounting
screws loose.
Loose belt.
Carbon build-up in pump. Have checked by a Trained
Belt too tight.
Excessive Loose belt.
belt wear
Tight belt.
Loose pulley.
Pulley misalignment.
Squealing Compressor pump
sound has no oil.
Loose belt.
N020206
CAUSE
1.
2.
3.
4.
Have checked by a Trained
Service Technician.
Operate safety valve manually
by pulling on ring. If valve still
leaks, it should be replaced.
Remove and clean, or replace.
Tighten pulley set screw.
Tighten flywheel screw.
Tighten mounting screws.
Loosen wingnut and then
tighten wingnut until it contacts
the washer, plus one turn.
Service Technician.
Loosen wingnut and then
tighten wingnut until it contacts
the washer, plus one turn.
Loosen wingnut and then
tighten wingnut until it contacts
the washer, plus one turn.
Loosen wingnut and then
tighten wingnut until it contacts
the washer, plus one turn.
Have checked by a Trained
Service Technician.
See Motor Pulley/Flywheel
Alignment paragraph in the
Maintenance section.
See Oil-Checking paragraph
in the Maintenance section.
Loosen wingnut and then
tighten wingnut until it contacts
the washer, plus one turn.
22 - ENG
CORRECTION
Check fuse box for blown fuse
and replace as necessary. Reset
circuit breaker. Do not use a fuse
or circuit breaker with higher
rating than that specified for
your particular branch circuit.
Check for proper fuse. You
should use a time delay fuse.
Check for low voltage conditions
and/or proper extension cord.
Disconnect the other electrical
appliances from circuit or
operate the compressor on
its own branch circuit.