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10-ENG
D23708
CAUSE CORRECTION
DO NOT DRILL INTO, WELD OR OTHERWISE
MODIFY AIR TANK OR IT WILL WEAKEN. 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.
PROBLEM
NOTE
Adjust the regulated pressure under flow
conditions (while accessory is being used).
Excessive tank pressure - safety
valve pops off.
Air leaks at fittings.
Air leaks at or inside check valve.
Air leaks at pressure switch
release valve.
Air leaks in air tank or at air tank
welds.
Pressure reading on the regu-
lated pressure gauge drops
when an accessory is used.
Pressure switch does not shut off motor
when compressor reaches “cut-out”
pressure.
Pressure switch “cut-out” too high.
Tube fittings are not tight enough.
Defective or dirty check valve.
Defective pressure switch release valve.
Defective check valve.
Defective air tank.
It is normal for “some” pressure drop to
occur.
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.
If the contacts are good, check to see if the pin in the
bottom of the pressure release valve is stuck. If it does
not move freely, replace the valve.
Return the unit to an authorized dealer to check and
adjust, or replace switch.
Tighten fittings where air can be heard escaping.
Check fittings with soapy water solution. DO NOT
OVER-TIGHTEN.
A defective check valve results in a constant air leak at
the pressure release valve where there is pressure in
the tank and the compressor is shut off. Remove and
clean or replace check valve. DO NOT OVER-TIGHTEN.
Remove and replace the release 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. DO NOT OVER-
TIGHTEN.
Air tank must be replaced. Do not repair the leak.
If there is an excessive amount of pressure drop when
the accessory is used, adjust the regulator following
the instructions on page 8.
TROUBLESHOOTING GUIDE