Section 7: Service; Troubleshooting - Grizzly T30945 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 1. GFCI tripped.
not start, or
2. Incorrect power supply voltage or circuit size.
power supply
3. Power supply circuit breaker tripped or fuse
breaker
blown.
immediately
4. Motor overheated.
trips after
5. Blade seized in workpiece.
startup.
6. ON/OFF paddle switch at fault.
7. Wiring broken, disconnected, or corroded.
8. Motor at fault.
Machine 1. Excessive feed rate/pressure.
stalls or is
2. Blade dull or installed backwards.
underpowered.
3. Insufficient water level in bath.
4. Improper size extension cord used.
5. Run capacitor at fault.
6. Motor overheated.
7. Motor or motor bearings at fault.
Machine has 1. Blade damaged or warped.
vibration or
2. Blade, motor, or other part loose.
noisy operation.
3. Incorrectly mounted to workbench or stand
feet not adjusted properly.
4. Motor bearings at fault.
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Troubleshooting

Possible Solution
1. Unplug and reset GFCI.
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. Clean motor, let cool, and reduce workload.
5. Unplug machine and free blade from workpiece.
6. Replace switch.
7. Fix broken wires or disconnected/corroded
connections.
8. Test/repair/replace.
1. Reduce feed rate/pressure against workpiece.
2. Dress blade (Page 27) or remove and install correctly
(Page 24).
3. Fill water bath to maximum fill line.
4. Use larger gauge or shorter extension cord.
5. Test/repair/replace.
6. Clean motor, let cool, and reduce workload.
7. Test/repair/replace.
1. Replace blade (Page 24).
2. Tighten loose hardware or replace if missing.
3. Adjust feet, shim, or tighten mounting hardware.
4. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
Model T30945 (Mfd. Since 12/19)