Section 7: Service; Troubleshooting - Grizzly G0783 Owner's 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/at fault.
start or a breaker
2. Plug/receptacle at fault/wired wrong.
trips.
3. Incorrect power supply voltage or circuit
size.
4. Power supply circuit breaker tripped or fuse
blown.
5. Wiring open/has high resistance.
6. Capacitor at fault.
7. Master power switch at fault.
8. Motor at fault.
Machine stalls or is 1. Workpiece crooked; vise jaws are loose or
underpowered.
incorrectly adjusted.
2. Machine undersized for task.
3. Wrong workpiece material.
4. Dull blade.
5. Plug/receptacle at fault.
6. Motor wired incorrectly.
7. Motor overheated.
8. Contactor not energized.
9. Motor bearings at fault.
10. Gearbox at fault.
Machine has 1. Workpiece loose.
vibration or
2. Machine incorrectly mounted to floor.
noisy operation.
3. Motor or component loose.
4. Motor fan rubbing on fan cover.
5. Motor bearings at fault.
6. Gearbox at fault.
G0783 (Mfd. Since 05/15)

Troubleshooting

Possible Solution
1. Rotate button head to reset. Replace.
2. Test for good contacts; correct the wiring (Page 35).
3. Ensure correct power supply voltage and circuit
size.
4. Ensure circuit is sized correctly and free of shorts.
Reset breaker or replace fuse.
5. Check/fix broken, disconnected, or corroded wires.
6. Test; check/fix broken wiring; replace capacitor.
7. Test/replace switch.
8. Test/repair/replace.
1. Straighten or replace workpiece/adjust vise jaws to
avoid workpiece binding saw blade.
2. Use correct blade; reduce feed rate/depth of cut;
use more coolant if possible (Page 22).
3. Use correct type/size of metal for cutting operation.
4. Sharpen/replace blade (Page 20).
5. Test for good contacts/correct wiring (Page 35).
6. Wire motor correctly (Page 35).
7. Clean motor, let cool, and reduce workload.
8. Test all legs of contactor; repair/replace.
9. Test/repair/replace.
10. Replace broken or slipping gears.
1. Use correct vise locations and re-clamp workpiece.
2. Tighten mounting bolts; relocate/shim machine.
3. Inspect/replace damaged bolts/nuts, and re-tighten
with thread locking fluid.
4. Fix/replace fan cover; replace loose/damaged fan.
5. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
6. Replace broken or slipping gears.
-31-