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SECTION 7: SERVICE
Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather the
serial number and manufacture date of your machine before calling.
Motor & Electrical
Symptom
Possible Cause
Machine does not
1. Switch disabling key removed.
start, or power
2. Machine circuit breaker tripped.
supply fuse/breaker
3. Incorrect power supply voltage or circuit
trips immediately
size.
after startup.
4. Power supply circuit breaker tripped or fuse
blown.
5. Motor wires connected incorrectly.
6. Start capacitor at fault.
7. Wiring broken, disconnected or corroded.
8. ON/OFF switch or circuit breaker at fault.
9. Motor centrifugal switch adjustment/contact
points at fault.
10. Motor at fault.
Machine stalls or is
1. Excessive feed pressure applied.
underpowered.
2. Belt slipping/pulleys misaligned.
3. Machine undersized for task.
4. Motor wired incorrectly.
5. Motor overheated, tripping machine circuit
breaker.
6. Run capacitor at fault.
7. Motor bearings at fault.
8. Centrifugal switch/contact points at fault.
9. Motor at fault.
Machine has
1. Grinding belt not tracking correctly.
vibration or
2. Motor or component loose.
noisy operation.
3. V-belt worn, loose, or pulleys misaligned/
loose.
4. Belt slapping cover.
5. Incorrectly mounted to workbench.
6. Motor fan rubbing on fan cover.
7. Motor bearings at fault.
-28-
Troubleshooting
Possible Solution
1. Install switch disabling key.
2. Reset machine circuit breaker.
3. Ensure correct power supply voltage and circuit size
(Page 10).
4. Ensure circuit is sized correctly and free of shorts.
Reset breaker or replace fuse.
5. Correct motor wiring connections (Page
6. Test/replace if at fault.
7. Fix broken, disconnected, or corroded connections
32
(Page
).
8. Replace switch/circuit breaker.
9. Adjust centrifugal switch/clean contact points.
Replace either if at fault.
10. Test/repair/replace.
1. Reduce feed pressure.
2. Tension/replace belt; align pulleys (Page 30).
3. Clean/replace sandpaper; reduce feet rate/sanding
depth.
4. Wire motor correctly (Page
5. Clean motor, let cool, and reduce workload. Reset
breaker.
6. Test/repair/replace.
7. Test/repair/replace.
8. Adjust centrifugal switch/clean contact points.
9. Test/repair/replace.
1. Ensure belt is tracking correctly (Page 21).
2. Replace damaged or missing bolts/nuts or tighten.
3. Inspect/replace belt with a new one (Page 30).
Realign/secure pulleys if necessary.
4. Replace/realign belt.
5. Tighten mounting hardware (Page 14); shim
machine to ensure no wobbles.
6. Fix/replace fan cover; replace loose/damaged fan.
7. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
Model G0898 (Mfd. Since 12/19)
32
).
32
).
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