Troubleshooting guide

D25007
10-ENG
Defective air tank.
CORRECTION
Excessive tank pressure - safety
valve pops off.
Pressure switch does not shut off mo-
tor when compressor reaches “cut-out”
pressure.
Move the pressure switch lever to the “OFF” position.
If the outfit doesn’t shut off, unplug. If the electrical
contacts are welded together, replace the pressure
switch.
Pressure '"cut-out" too high. Return the outfit to an authorized dealer to check and
adjust, or replace switch.
PROBLEM
Air leaks at fittings. Tube fittings are not tight enough. Tighten fittings where air can be heard escaping.
Check fittings with soapy water solution. DO NOT
OVER-TIGHTEN.
Air leaks at or inside check valve.
Defective or dirty check valve.
A 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. Remove and clean
or replace check valve. DO NOT OVER-TIGHTEN.
Defective pressure release valve.
Defective check valve.
Air leaks at pressure switch re-
lease valve.
Remove and replace the release valve.
Air leaks in air tank or at air tank
welds.
DO NOT DRILL INTO, WELD OR OTHERWISEDO NOT DRILL INTO, WELD OR OTHERWISE
DO NOT DRILL INTO, WELD OR OTHERWISEDO NOT DRILL INTO, WELD OR OTHERWISE
DO NOT DRILL INTO, WELD OR OTHERWISE
MODIFY AIR TANK OR IT WILL WEAKEN.MODIFY AIR TANK OR IT WILL WEAKEN.
MODIFY AIR TANK OR IT WILL WEAKEN.MODIFY AIR TANK OR IT WILL WEAKEN.
MODIFY AIR TANK OR IT WILL WEAKEN.
THE TANK CAN RUPTURE OR EXPLODE.THE TANK CAN RUPTURE OR EXPLODE.
THE TANK CAN RUPTURE OR EXPLODE.THE TANK CAN RUPTURE OR EXPLODE.
THE TANK CAN RUPTURE OR EXPLODE.
PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COMPRESSED
AIR SOURCES. PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY REPAIRS,
UNPLUG THE COMPRESSOR AND BLEED OFF TANK AIR PRESSURE.
CAUSE
Pressure reading on the regu-
lated pressure gauge drops when
an accessory is used.
It is normal for “some” pressure drop to
occur.
If there is an excessive amount of pressure drop when
the accessory is used, adjust the regulator following
the instructions on page 7.
Adjust the regulated pressure under flow conditions
(while accessory is being used).
NOTENOTE
NOTENOTE
NOTE
Air tank must be replaced. Do not repair the leak.
A 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. Remove and clean
or replace check valve. DO NOT OVER-TIGHTEN.
TROUBLESHOOTING GUIDE