Troubleshooting Guide - Porter-Cable CPF4515 Instruction Manual

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
Excessive tank Pressure switch does not shut
pressure - safety off motor when compressor
valve pops off. reaches "cut-out" pressure.
Pressure switch "cut-out" too
high.
Air leaks at fittings. Tube fittings are not tight
enough.
Air leaks at or inside Malfunctioning or dirty check
check valve. valve.
Air leaks at pressure Malfunctioning pressure switch
switch release release valve.
valve.
Malfunctioning check valve.
Air leaks in air tank or Damaged air tank.
at air tank welds.
Air leaks between Leaking o-ring.
head and valve
plate.
Pressure reading on It is normal for "some"
the regulated pressure drop to occur.
pressure gauge
drops when an
accessory is used.
CORRECTION
Move the pressure switch lever to
the "OFF" position. If the unit
doesn't shut off, and the electrical
contacts are welded together,
replace the pressure switch.
Contact an authorized service
center to check and replace
pressure switch.
Tighten fittings where air can be
heard escaping. Check fittings with
soapy water solution. DO NOT
OVER-TIGHTEN.
A malfunctioning 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. Drain tank
then remove and clean or replace
check valve. DO NOT OVER-
TIGHTEN.
Remove and replace the release
valve.
A malfunctioning 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. Drain tank
then remove and clean or replace
check valve. DO NOT OVER-
TIGHTEN.
DRILL INTO, WELD OR
OTHERWISE MODIFY AIR
TANK
WEAKEN. THE TANK CAN
RUPTURE OR EXPLODE.
TANK MUST
PLACED.
Torque head screws to 8 ft. lbs. If
this does not stop leak, replace o-
ring.
If there is an excessive amount of
pressure drop when the accessory
is used, adjust the regulator
following the instructions on page
7. NOTE: Adjust the regulated
pressure under flow conditions
(while accessory is being used).
14-ENG
DO NOT
OR IT WILL
BE RE-