Porter-Cable PXCMLA4708065, Instruction Manual

Page: 19 / 88

19 - ENG
TROUBLESHOOTING
Note: Troubleshooting problems may have similar causes and solutions.
PROBLEM POSSIBLE CAUSE SOLUTION
Excessive current
draw trips circuit
breaker of motor reset
switch
Low voltage/motor
overload
Check that power
supply is adequate
and that compressor
is on a dedicated
circuit. If compressor is
connected to a circut
protected by a fuse, use
dual element time delay
fuses (Buss Fusetron
type “T” only).
Drive belt too tight Readjust belt tension
Restricted air passages Inspect and replace
transfer tubes or
check valve, as
required.
Compressor stalls Low voltage motor Furnish adequate power.
Bad check valve Replace the check
valve.
Seized pump Contact authorized
service center.
Low discharge
pressure
Air leaks Tighten or replace
leaking fittings or
connections. Do not
overtighten.
Leaking valves Contact authorized
service center.
Restricted air intake Clean or replace air filter
element(s).
Blown gaskets Contact authorized
service center.
Worn piston rings or
cylinder
Contact authorized
service center.
Compressor pump
knocking
Loose engine pulley or
compressor flywheel
Retighten pulley
and flywheel. Check
alignment.
Low oil level in pump
crankcase
Keep oil at proper level
at all times.
Excess carbon on valves
or top of piston
Contact authorized
service center.