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TROUBLESHOOTING GUIDE
CAUSE
Motor overload protection switch
has tripped
Tank pressure exceeds pressure
switch cut-in pressure.
Fuse blown, cimuit breaker trip-
ped.
PROBLEM
Motor Will Not Run
Excessive tank pressure
(safety valve pops off),
Wrong gauge wire in extension
cord,
Pressure release valve on pres-
sure switch has not unloaded
head pressure.
Check valve stuck.
Loose electrical connections.
Capacitor on the motor.
Faulty motor.
Pressure switch does not shut off
motor.
Pressure switch cut-out too high.
CORRECTION
Let motor cool off and reset switch by pres-
sing the red reset button located on the end
of motor.
Motor will start automatically when tank
pressure drops below cut-in pressure of pres-
sure switch.
Check fuse box for blown fuse and replace as
necessary. Reset circuit breaker. Do not use
a fuse or circuit breaker with higher rating
than that specified for your particular branch
circuit (see specification chart, page 5,)
Check for proper gauge wire. Refer to wire
size recommendations under Motor Section
of this manual.
Bleed line by pushing lever on pressure
switch to OFF position which opens the pres-
sure release valve. If valve still does not
open, replace it.
A defective check valve results in a constant
air leak at the pressure release valve
attached to the side of the pressure switch
(20) when there is pressure in the air tank
and the compressor is not running. Remove
and clean or replace check valve (do not
overtighten).
Check in motorconnection box and pressure
switch. Pressure switch cover can easily be
removed by lifting cover at rear of switch.
Return to Sears Service Center to check and
replace if necessary.
Unless motor is visibly damaged, remove
motor and have it checked at a local Sears
Service Center.
Move pressure switch lever to the "off" posi-
tion. If outfit still does not shut off, unplug it.
Remove pressure switch release valve. Plug
outfit back in. If itstill runs, replace pressure
switch, ff it doesn't run, replace pressure
release valve.
Return outfit to Sears Service Center to
check and adjust or replace if necessary.
14
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