Section 7: Service; Troubleshooting - Grizzly G0453W 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. Incorrect power supply voltage or circuit
trips.
size.
3. Thermal overload relay has tripped.
4. Power supply circuit breaker tripped or fuse
blown.
5. Motor wires connected incorrectly.
6. Wiring open/has high resistance.
7. Power switch at fault.
8. Centrifugal switch at fault.
9. Start capacitor at fault.
10. Thermal overload relay at fault.
11. Contactor not energized; at fault.
12. Motor at fault.
Machine stalls or is 1. Machine undersized for task.
underpowered.
2. Workpiece not suitable for machine.
3. Motor overheated, causing thermal
overload to trip.
4. Belt(s) slipping; oil/grease on belt(s).
5. Dull knives/inserts.
6. Dust collection problem causing internal
components to clog up with shavings.
7. Motor wired incorrectly.
8. Centrifugal switch at fault.
9. Run capacitor at fault.
10. Pulley slipping on shaft.
11. Contactor not energized/has poor contacts.
12. Motor bearings at fault.
Machine has 1. Motor or component loose.
vibration or noisy
operation.
2. V-belt(s) worn,loose, or slapping cover.
3. Pulley loose.
4. Bed rollers protruding unevenly.
5. Plastic chip deflector hitting knives.
6. Motor fan rubbing on fan cover.
G0453W/ZW–G0454W/ZW (Mfd. Since 05/16)

Troubleshooting

Possible Solution
1. Rotate button head to reset. Replace.
2. Ensure correct power supply voltage and circuit
size.
3. Reset; contact Tech Support if relay frequently trips.
4. Ensure circuit is sized correctly and free of shorts.
Reset circuit breaker or replace fuse.
5. Correct motor wiring connections.
6. Check/fix broken, disconnected, or corroded wires.
7. Replace switch.
8. Adjust/replace centrifugal switch if available.
9. Test/replace.
10. Replace.
11. Test all legs for power/replace.
12. Test/repair/replace.
1. Reduce feed rate/depth of cut.
2. Only cut wood/ensure moisture is below 20%.
3. Allow motor to cool, reset overload if necessary,
and reduce depth of cut.
4. Clean/tension/replace belt(s); align pulleys
(Page 40).
5. Sharpen/replace knives, or replace
inserts (Page 27).
6. Clear blockages in dust chute/ducting, ensure dust
collector is operating efficiently.
7. Wire motor correctly.
8. Adjust/replace centrifugal switch if available.
9. Test/repair/replace.
10. Tighten loose pulley; replace pulley/shaft if
damaged.
11. Test all legs for power/replace.
12. Test/repair/replace.
1. Inspect/tighten loose bolts/nuts; replace damaged
components.
2. Tension/replace belts as a matched set (Page 40).
3. Re-align/replace shaft, pulley set screw, and key.
4. Adjust bed rollers (Page 42).
5. Adjust chip deflector; replace if necessary.
6. Fix/replace fan cover; replace loose/damaged fan.
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