Section 8: Service; Troubleshooting - Grizzly G0853 Owner's Manual

SECTION 8: 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.
Symptom Possible Cause
Machine does 1. Master power switch in OFF position.
not start, or
2. E-Stop button depressed/at fault.
power supply
3. Blown fuse.
breaker
4. Machine wired out of phase.
immediately
trips after
5. Incorrect power supply voltage or circuit size.
startup.
6. Blade cover limit switch engaged/at fault.
7. Cabinet door limit switch engaged/at fault.
8. Power supply circuit breaker tripped or fuse
blown.
9. Thermal overload relay has tripped/at fault.
10. Contactor not energized/at fault.
11. Wiring broken, disconnected, or corroded.
12. Motor ON button is at fault.
13. Circuit board at fault.
14. Start delay module at fault.
15. Motor or motor bearings at fault.
Machine 1. Workpiece material unsuitable for machine.
stalls or is
2. Feed rate/cutting speed too fast.
underpowered.
3. Workpiece crooked; fence loose or
misadjusted.
4. Dust collection ducting problem.
5. Machine undersized for task.
6. Feed rate too aggressive for motor blade.
7. Blade dull or wrong blade for task.
8. Belt(s) slipping/pulleys misaligned.
9. Motor wired incorrectly.
10. Pulley slipping on shaft.
11. Contactor not energized/at fault.
12. Motor or motor bearings at fault.
13. Start delay module at fault.
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Troubleshooting

Possible Solution
1. Turn master power switch to ON position.
2. Rotate E-Stop button head to reset. Replace if at fault.
3. Blown fuse/ensure no shorts.
4. Reverse R & T incoming power connections in junction
box (Page 44).
5. Ensure correct power supply voltage and circuit size.
6. Move blade cover to working position; replace faulty
limit switch.
7. Close door/replace faulty safety switch.
8. Ensure circuit is free of shorts. Reset circuit breaker or
replace fuse.
9. Reset. Adjust or replace if at fault.
10. Test all legs for power; replace if necessary.
11. Fix broken wires or disconnected/corroded
connections.
12. Replace faulty ON button.
13. Replace circuit board.
14. Adjust to correct delay/replace.
15. Replace motor.
1. Only cut wood/ensure moisture is below 20%.
2. Decrease feed rate/cutting speed.
3. Straighten or replace workpiece/adjust fence.
4. Clear blockages, seal leaks, use smooth-wall duct,
eliminate bends, close other branches.
5. Use correct blade/reduce feed rate or depth of cut.
6. Reduce feed pressure and speed.
7. Use correct blade for type of cut. Use sharp blade.
8. Clean/tension/replace belt(s); ensure pulleys are
aligned.
9. Wire motor correctly.
10. Tighten/replace loose pulley/shaft.
11. Test all legs for power; repair/replace if at fault.
12. Replace motor.
13. Adjust to correct delay; replace module.
Model G0853 (Mfd. Since 07/18)