SYMPTON
Motor will not start
Motor stalls or fails to
reach full speed
Motor overheats
Machine slows down
while operating
Sandpaper slips on drum
Sandpaper not removing
wood
Wood burns while
sanding
Spindle cannot complete
the entire oscillating circle
Excessive noise or
vibration
POSSIBLE CAUSE(S)
1. Low voltage
2. Short circuit in line cord or plug
3. Short circuit in motor
4. Open circuit or loose connection
in motor
5. Incorrect fuses or circuit breakers
6. Defective switch
1. Power overload
2. Low voltage from power supply
3. Undersized line cord
4. Motor overload
5. Short circuit or loose connection
in motor
6. Incorrect fuses or circuit breakers
Motor overloaded
Applying too much pressure during
operation
1. Applying too much pressure during
operation
2. Spindle knob loose
Sandpaper glazed or loaded with
sawdust
Sandpaper glazed or loaded with
sawdust
1. Too much sawdust builds up
2. Faulty oscillating mechanism
1. Spindle and motor not aligned
properly
2. Drum and sleeve not secured
properly
SOLUTIONS
1. Check power supply for proper voltage
2. Inspect line cord and plug for faulty insulation
or shorted connection
3. Inspect connection on motor.
4. Inspect connection on motor
5. Replace with correct fuses or circuit breakers
6. Replace switch
1. Reduce workload on the power supply
2. Check power supply for proper voltage
3. Use line cord of adequate size or reduce
length of wiring
4. Reduce load on motor
5. Inspect the connection in motor for loose or
shorted connection
6. Replace with correct fuses or circuit breakers
Reduce load on motor. Turn off the machine until
motor cools down
Ease up on pressure
1. Ease up on pressure
2. Tighten spindle knob
Replace sandpaper
Replace sandpaper
1. Vacuum clean the machine
2. Inspect the oscillating mechanism
1. Adjust motor and spindle alignment and
tighten all fasteners
2. Adjust and tighten spindle knob properly to
secure drum and sleeve in position
TROUBLESHOOTING
9
