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TROUBLESHOOTING GUIDE
PERFORMING REPAIRS MAY EXPOSE VOLTAGE SOURCES, MOVING PARTS OR COM-
PRESSED AIR SOURCES. PERSONAL INJURY MAY OCCUR. PRIOR TO ATTEMPTING ANY
REPAIRS, UNPLUG THE COMPRESSOR AND BLEED OFF TANK AIR PRESSURE.
PROBLEM
Excessivetank pressure- safety
valve pops off.
CAUSE CORRECTION
Pressureswitchdoesnotshutoffmctor
when compressorreaches "cut-out"
pressure.
Movethepressureswitchlevertothe'OFF =position.
Iftheoutt'rtdoesn'tshutoff,andtheelectricalcontacts
areweldedtogether, replacethe pressureswitch.
Pressure switch'cut-out" too high. Return the outfit to Sears Service Center to check
and adjust, or replace switch.
Air leaks at fittings. Tube fittings are not tight enough. Tighten fittings where air can be heard escaping,
Check t'rttings with soapy water solution, DO NOT
OVER-TGHTEN.
Airleaks atorinsidecheckvaive, Defective or dirty check valve.
Air leaks at pressure switch re-
lease valve.
Defective pressure switch release
valve.
Defective check valve.
Defectiveair tank.Airleaks inairtankoratairtank
welds.
A defective check valve results in a constant air leak
at the pressure release valve where there ispressure
in thetank and the compressor is shut off. Remove
and clean or replace check valve.
Remove and replace the release valve.
Ifthe contacts are good, checkto see ifthe pin inthe
bottom of the pressure release valve is stuck. If it
does not move freely, replace the valve,
A defective check valve results in a constant air leak
at the pressure release valve when there is pressure
in thetank and the compressor is shut off. Remove
and clean or replace check valve.
Airtank must bereplaced. Do not repairtheleak.
DO NOT DRILL INTO, WELD OR OTHERWISE
MODIFY AIR TANK OR IT WILL WEAKEN, THE
TANK CAN RUPTURE OR EXPLODE.
Air leaks between head and Leaking seal. Torque head screws to 8 ft. Ibs. If this does not
valve plate, stop leak, replace seal.
tt is normal for"some" pressure drop
to occur.
Pressure reading on the regu-
lated pressure gauge drops
when an accessory is used.
If there is an excessive amount of pressure drop
when the accessory is used, adjust the regulator
following the instructions on page 6.
NOTE
Adjust the regulated pressure under flow condi-
lions (while accesory is being used).
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