Craftsman 351.215421 Operator's Manual page 10

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
Abrasive belt runs off top wheel
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
4. Motor wired for different line voltage
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
4. Motor wired for different line voltage
1. Motor overloaded
2. Defective belt
1. Short circuit in motor or loose
connections
2. Low voltage
3. Incorrect fuses or circuit breakers
in power line
4. Motor overloaded
5. Defective belt
Applying too much pressure to
workpiece
1. Not tracking properly
2. Defective belt
3. Belt housing not set 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
4. Rewire motor as per wiring diagram, see
Installation section, "Electrical Connections"
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
4. Rewire motor as per wiring diagram, see
Installation section, "Electrical Connections"
1. Reduce load on motor
2. Replace belt
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
5. Replace belt
Ease up on pressure
1. See operation section
"Tracking Abrasive Belt"
2. Replace belt
3. Adjust housing lock bolt, see Operation
section, "Horizontal Belt Sanding"
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