7
SYMPTOM
Motor will not start
Motor will not start; fuses blown or
circuit breakers 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. Blown line fuse or tripped circuit breaker
2. Low line voltage
3. Defective switch
4. Defective, blown capacitor
1. Overloading due to binding
2. Defective plug
3. Defective cord
4. Defective switch
5. Motor wired for different line voltage
6. Faulty internal wiring
1. Power line overloaded with lights,
appliances and other motors
2. Undersized 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. Motor wired for different line voltage
4. Incorrect fuses or circuit breakers in
power line
5. Motor overloaded
Applying too much pressure to workpiece
Not tracking properly
CORRECTIVE ACTION
1. If fuse is blown, replace with fuse of
proper size. If breaker tripped, reset it
2. Check power supply for voltage and
correct as needed
3. Replace switch
4. Replace capacitor
1. Clean around wheels and shaft and/or
replace bearings
2. Replace plug
3. Replace cord
4. Replace switch
5. Rewire motors as per line voltage
(See Electrical Connections, page 4)
6. Have a qualified electrician service unit.
1. Reduce load on power line
2. Increase wire sizes, or reduce length
of wiring
3. Request a voltage check from 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. Rewire motor as per line voltage
4. Install correct fuses or circuit breakers
(See Electrical Connections, page 4)
5. Reduce load on motor
Ease up on pressure
See operation section
“Tracking Abrasive Belt”
TROUBLESHOOTING
Palmgren Operating Manual & Parts List
81091A
