Section 7: Service; Troubleshooting - Grizzly G0453Z Owner's Manual

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical
Support at (570) 546-9663.
Motor & Electrical
Symptom Possible Cause
Machine does not 1. Stop push-button engaged/faulty.
start or a breaker
2. Power supply switched OFF or at fault.
trips.
3. Thermal overload relay has tripped.
4. Wall circuit breaker tripped.
5. Plug/receptacle at fault/wired wrong.
6. Motor connection wired wrong.
7. Contactor not energized/has poor contacts.
8. Wiring open/has high resistance.
9. ON/OFF switch at fault.
10. Start capacitor at fault.
11. Centrifugal switch at fault.
12. Motor at fault.
Machine stalls or is 1. Feed rate too fast.
underpowered.
2. Workpiece material not suitable.
3. Dust collection ducting problem.
4. Motor overheated.
5. Machine undersized for task.
6. V-belt(s) slipping.
7. Motor wired incorrectly.
8. Plug/receptacle at fault.
9. Run capacitor at fault.
10. Pulley/sprocket slipping on shaft.
11. Motor bearings at fault.
12. Contactor not energized/has poor contacts.
13. Motor at fault.
14. Centrifugal switch at fault.
Machine has 1. Belts slapping cover.
vibration or noisy
2. V-belt(s) worn or loose.
operation.
3. Pulley loose.
4. Motor mount loose/broken.
Model G0453Z/G0454Z (Mfg. 1/09+)

Troubleshooting

Possible Solution
1. Rotate button to reset/replace it.
2. Ensure power supply is on/has correct voltage.
3. Reset; adjust trip load dial if necessary; replace.
4. Ensure circuit size is correct/replace weak breaker.
5. Test for good contacts; correct the wiring.
6. Correct motor wiring connections (Pages 44–45).
7. Test all legs for power/replace if faulty.
8. Check/fix broken, disconnected, or corroded wires.
9. Replace switch.
10. Test/replace if faulty.
11. Adjust/replace centrifugal switch.
12. Test/repair/replace.
1. Decrease feed rate.
2. Only cut wood/ensure moisture is below 20%.
3. Clear blockages, seal leaks, use smooth wall duct,
eliminate bends, close other branches.
4. Clean motor, let cool, and reduce workload.
5. Use sharp blades/inserts; reduce feed rate or depth
of cut.
6. Tension/replace belt(s) (Page 35); ensure pulleys
are aligned (Page 36).
7. Wire motor correctly (Pages 44–45).
8. Test for good contacts/correct wiring.
9. Test/repair/replace.
10. Replace loose pulley/shaft.
11. Test/repair/replace.
12. Test all legs for power/replace if faulty.
13. Test/repair/replace.
14. Adjust/replace centrifugal switch.
1. Replace/realign belts with a matched set.
2. Inspect/replace belts with a new matched set.
3. Realign/replace shaft, pulley, setscrew, and key.
4. Tighten/replace.
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