Section 7: Service; Troubleshooting - Grizzly G0835 Manual

SECTION 7: SERVICE

Review the troubleshooting and 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. Emergency stop button depressed.
start or immediately
2. Incorrect power supply voltage or circuit
shuts down after
size.
startup.
3. Power supply circuit breaker tripped or fuse
blown.
4. Motor wires connected incorrectly.
5. Wiring open/has high resistance.
6. ON/OFF switch at fault.
7. Emergency stop button at fault.
8. Variable-speed potentiometer at fault.
9. Inverter/control box at fault.
10. Motor at fault.
Machine stalls or is 1. Machine undersized for task.
underpowered.
2. Workpiece material not suitable for
machine.
3. Feed rate/cutting speed too fast.
4. Belt slipping.
5. Pulley slipping on shaft.
6. Motor overheated.
7. Motor wired incorrectly.
8. Plug/receptacle at fault.
9. Motor at fault.
Machine has 1. Motor or component loose.
vibration or noisy
operation.
2. Machine incorrectly mounted or sits
unevenly on floor.
3. Belt worn, loose, or slapping cover.
4. Pulley loose.
5. Motor fan rubbing on fan cover.
6. Motor mount loose/broken.
7. Motor bearings at fault.
8. Workpiece/faceplate at fault.
-46-

Troubleshooting

Possible Solution
1. Twist button clockwise to reset.
2. Ensure correct power supply voltage and circuit
size.
3. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
4. Correct motor wiring connections.
5. Check/fix broken, disconnected, or corroded wires.
6. Replace switch.
7. Replace.
8. Replace.
9. Inspect inverter/controller box; replace.
10. Repair/replace.
1. Use sharp chisels; reduce feed rate/depth of cut.
2. Only cut wood/ensure moisture is below 20%.
3. Decrease feed rate/cutting speed (Page 35).
4. Tension/replace belt; ensure pulleys are aligned
(Page 48); belts are clean and not damaged.
5. Replace loose pulley/shaft; tighten pulley set
screws.
6. Clean motor, let cool, and reduce workload.
7. Wire motor correctly.
8. Test for good contacts/correct wiring.
9. Repair/replace.
1. Inspect/replace damaged bolts/nuts, and retighten
with thread locking fluid.
2. Tighten/replace anchor studs in floor; relocate/shim
machine; adjust feet.
3. Inspect/replace belt. Ensure pulleys are aligned.
4. Tighten pulley set screw; re-align/replace shaft,
pulley set screw, and key.
5. Fix/replace fan cover; replace loose/damaged fan.
6. Tighten/replace.
7. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
8. Center workpiece in chuck/faceplate; reduce RPM.
Model G0799 G0800 (Mfd. Since 11/17)