Porter-Cable CPLC7060V instruction manual Troubleshooting Guide, Over-Tighten

TROUBLESHOOTING GUIDE

PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COMPRESSED AIR SOURCES. PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY REPAIRS, UNPLUG THE AIR COMPRESSOR AND BLEED OFF ALL AIR TANK AIR PRESSURE.

PROBLEM	CAUSE	CORRECTION
Excessive air tank	Pressure switch does not shut	Move the pressure switch lever to
pressure - safety	off motor when air compressor	the “OFF” position. If the unit
valve pops off (units	reaches “cut-out” pressure.	doesn’t shut off, and the electrical
with ON-AUTO		contacts are welded together,
switch).		replace the pressure switch.
	Pressure switch “cut-out” too	Contact a Service Center to check
	high.	and adjust, or replace switch.
Excessive air tank	Pressure switch does not shut	Pressure switch must be replaced.
pressure - safety	off motor when air compressor
valve pops off (units	reaches "cut-out pressure".
without ON-AUTO
switch).
Air leaks at fittings or	Tube fittings are not tight	Tighten fittings where air can be
hose.	enough.	heard escaping. Check fittings with
		soapy water solution. DO NOT
.		OVER-TIGHTEN.
Air leaks at or inside	Malfunctioning or dirty check	A malfunctioning check valve
check valve.	valve.	results in a constant air leak at the
		pressure release valve when
		pressure is in the air tank and the
		air compressor is shut off. Remove
		and clean or replace check valve.
		DO NOT OVER-TIGHTEN.
Air leaks at pressure	Malfunctioning pressure switch	Remove and replace the release
switch release valve	release valve.	valve.
during running.
Continuous air	Malfunctioning check valve.	Replace check valve.
relieving from
pressure switch
release valve after
shut off.
Air leaks in air tank	Damaged air tank.	Air tank must be replaced.
or at air tank welds.		DO NOT DRILL
		INTO, WELD, OR OTHERWISE
		MODIFY AIR TANK. IT WILL
		WEAKEN. THE AIR TANK CAN
		RUPTURE OR EXPLODE.
Air leak from safety	Possible malfunctioning in	Operate safety valve manually by
valves.	safety valve.	pulling on ring. If a valve still leaks,
		it should be replaced.
Squealing sound.	Loose belt.	Adjust belt tension. (See Belt
		Replacement.)
	No oil in the air compressor	Add oil.
	pump.

20-ENG