Maintenance; Air Filter - Inspection And Replacement; Check Valve -Replacement; Safety Valve - Inspection - Sears Craftsman 919.153450 Owner's Manual

MAINTENANCE
UNIT CYCLES AUTOMATICALLY WHEN POWER IS ON. WHEN DOING MAINTENANCE, YOU
MAY BE EXPOSED TO VOLTAGE SOURCES, COMPRESSED AIR OR MOVING PARTS. PER-
SONAL INJURIES CAN OCCUR. BEFORE PERFORMING ANY MAINTENANCE OR REPAIR,
UNPLUG THE COMPRESSOR AND BLEED OFF ALL AIR PRESSURE.
Air Filter - Inspection and Replacement Safety Valve - Inspection
Keep the air filter clean at all times. Do not operate the
compressor with the air filter removed.
A dirty air filter will not allow the com pressor to operate at
full capacity. Before you use the compressor, check the
air filter to be sure it is clean.
If it is dirty, simply pull it out. You may wash it with a mild
detergent and warm water, or replace it.
Check Valve - Replacement
1. Release all air pressure from air tank and unplug outfit.
2. Remove shroud.
3. Loosenthetopandbottomnutsandremovetheoutlet
tube.
4. Remove the pressure release tube and fitting.
5. Unscrew the check valve (turn counterclockwise) us-
ing a socket wrench.
6. Check that the valve disc moves freely inside the
check valve and that the spring holds the disc in the
upper, closed position. The check valve may be
cleaned with a solvent, such as paint and varnish
remover.
7. Apply sealant to the check valve threads. Reinstall
the check valve (turn clockwise).
8. Replace the pressure release tube and fitting.
9. Replace the outlet tube and tighten top and bottom
nuts.
10. Replace the shroud.
IF THE SAFETY VALVE DOES NOT WORK
PROPERLY, OVER-PRESSURIZATION MAY
OCCUR, CAUSING AIR TANK RUPTURE OR
AN EXPLOSION. OCCASIONALLY PULL THE
RING ON THE SAFETY VALVE TO MAKE SURE
THATTHE SAFETYVALVE OPERATES FREELY.
IF THE VALVE IS STUCK OR DOES NOT OPER-
ATE SMOOTHLY, IT MUST BE REPLACED
WITH THE SAME TYPE OF VALVE.
Motor
The motor hasan automatic reset thermal overload protec-
tor. If the motor overheats for any reason, the overload
protector will shut off the motor. The motor must be
allowed to cool down before restarting. The compressor
will automatically restart after the motor cools.
If the overload protector shuts the motor off frequently,
check for a possible voltage problem. Low voltage can
also be suspected when:
1. The motor does not get up to full power or speed.
2. Fuses blowout when starting the motor; lights dim and
remain dim when motor is started and is running.
Motor Replacement - Wiring Diagram
The motor connection diagram is located on the side of
motor.
STORAGE
Before you store the air compressor, make sure you do the
following:
1. Review the "Maintenance" and "Operating Proce-
dures" sections and perform maintenance as neces-
sary. Be sure to drain water from the air tank.
2. Protect the electrical cord and air hose from
damage (such as being stepped on or run over).
Windthem loosely around thecompressor handle.
Store the air compressor in a clean and dry location.
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