Section 7: Service; Troubleshooting - Grizzly G0834 Owner's Manual

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. OFF button depressed/at fault.
start or power-
2. Incorrect power supply voltage or circuit
supply fuse/breaker
size.
trips immediately
3. Power supply circuit breaker tripped/fuse
after startup.
blown.
4. Thermal overload relay has tripped.
5. Motor wires connected incorrectly.
6. Wiring open/has high resistance.
7. ON button at fault.
8. Start capacitor at fault.
9. Contactor not energized/has poor contacts.
10. Centrifugal switch at fault.
11. Motor at fault.
Machine stalls or is 1. Workpiece material not suitable.
underpowered.
2. Feed rate too fast.
3. Excessive depth of cut.
4. Dull inserts.
5. Belts slipping or pulleys misaligned.
6. Dust collection blockage.
7. Motor overheated
8. Pulley slipping on shaft.
9. Run capacitor at fault.
10. Contactor not energized/has poor contacts.
11. Motor bearings at fault.
Machine has 1. Motor or component loose.
vibration or noisy
operation.
2. Belts worn or loose.
3. Motor fan rubbing on fan cover.
4. Pulley loose.
6. Dull inserts.
7. Machine incorrectly resting on floor.
8. Cutterhead bearings at fault.
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Troubleshooting

Possible Solution
1. Rotate OFF button head to reset. Replace if at fault.
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. Reset; adjust trip load dial if necessary; replace.
5. Correct motor wiring connections.
6. Check/fix broken, disconnected, or corroded wires.
7. Replace ON button.
8. Test/replace if at fault.
9. Test all legs for power; replace.
10. Adjust centrifugal switch/contact points; replace if
necessary.
11. Test/repair/replace.
1. Ensure workpiece is suitable for jointing (Page 23).
2. Reduce feed rate.
3. Reduce depth of cut.
4. Rotate/replace inserts (Page 34).
5. Tension/replace belts (Page 35); ensure pulleys are
aligned (Page 36).
6. Clear blockages, seal leaks, use smooth wall duct,
eliminate bends, close other branches.
7. Clean motor, let cool, and reduce workload.
8. Tighten/replace loose pulley/shaft (Page 36),
replace shaft key; tighten pulley set screw.
9. Test/repair/replace.
10. Test all legs for power; replace.
11. Test/repair/replace.
1. Inspect/replace damaged bolts/nuts, and re-tighten
with thread-locking fluid.
2. Inspect/tension or replace belts (Page 35).
3. Fix/replace fan cover; replace loose/damaged fan.
4. Re-align/replace shaft, pulley, set screw, and key
(Page 36). Relocate/shim machine.
6. Rotate/replace inserts (Page 34).
7. Relocate/shim machine.
8. Replace bearings/re-align cutterhead.
Model G0834 (Mfd. Since 12/17)