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7
MAINTENANCE
TROUBLESHOOTING
SYMPTOM
Motor will not start
Motor will not start;
fuses blown or circuit
breakers are tripped
Motor fails to develop full
power (power output of
motor decreases rapidly
with decrease in voltage at
motor terminals)
Motor overheats
Motor stalls (resulting in
blown fuses or tripped
circuit breakers)
Machine slows down
while operating or
sandpaper slips on drum
Wood burns while
sanding; sandpaper not
removing wood
Spindle does NOT travel
completely through 1″
stroke
Excessive noise
Note: Normally operating
sander does make some
noise
POSSIBLE CAUSE(S)
1. Low voltage
2. Open circuit in motor or loose
connections
3. Defective switch
4. Defective capacitor
1. Short circuit in line cord or plug
2. Short circuit in motor or loose
connections
3. Incorrect fuses or circuit breakers in
power line
1. Power line overloaded with lights,
appliances and other motors
2. Undersize wires or circuits too long
3. General overloading of power
company's facilities
Motor overloaded
1. Short circuit in motor or loose
connections
2. Low voltage
3. Incorrect fuses or circuit breakers in
power line
4. Motor overload
1. Applying too much pressure to
workpiece
2. Spindle knob loose
Sandpaper glazed or loaded with
sawdust
1. Sawdust build-up below table insert
2. Damaged or loose oscillating
mechanism
Spindle and motor not aligned properly
CORRECTIVE ACTION
1. Check power line for proper voltage
2. Inspect all lead connections on motor for loose or
open connection
3. Replace switch
4. Replace capacitor
1. Inspect line cord or plug for damaged insulation and
shorted wires
2. Inspect all lead connections on motor for loose or
shorted terminals or worn insulation on wires
3. Install correct fuses or circuit breakers
1. Reduce the load on the power line
2. Increase wire sizes, or reduce length of wiring
3. Request a voltage check from the power company
Reduce load on motor
1. Inspect connections in motor for loose or shorted
terminals or worn insulation on lead wires
2. Correct the low line voltage conditions
3. Install correct fuses or circuit breakers
4. Reduce load on motor
1. Ease up on pressure
2. Tighten spindle knob
Replace sandpaper
1. Remove sawdust with vacuum
2. Inspect mechanism. Contact Sears Service Center
if necessary
Adjust motor and spindle alignment