Section 7: Service; Troubleshooting - Grizzly G1531 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. Switch disabling key is removed.
start or a breaker
2. Power supply switched OFF or is at fault.
trips.
3. Start capacitor is at fault.
4. Motor connection wired incorrectly.
5. Wall fuse/circuit breaker is blown/tripped.
6. Wiring is open/has high resistance.
7. Motor ON button or ON/OFF switch is at
fault.
Machine stalls or is 1. Workpiece material is not suitable for this
overloaded.
machine.
2. Motor connection is wired incorrectly.
3. Motor bearings are at fault.
4. Machine is undersized for the task.
5. Motor has overheated.
6. Motor is at fault.
Machine has 1. Motor or component is loose.
vibration or noisy
operation.
2. Motor mount loose/broken/incorrect.
3. Machine sits unevenly.
4. Motor fan is rubbing on fan cover.
5. Motor bearings are at fault.
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Troubleshooting

Possible Solution
1. Install switch disabling key.
2. Ensure power supply is switched on; ensure power
supply has the correct voltage.
3. Test/replace if faulty.
4. Correct motor wiring connections.
5. Ensure circuit size is suitable for this machine;
replace weak breaker.
6. Check for broken wires or disconnected/corroded
connections, and repair/replace as necessary.
7. Replace faulty ON button or ON/OFF switch.
1. Only cut wood products; make sure moisture content
is below 20% and there are no foreign materials in
the workpiece.
2. Correct motor wiring connections.
3. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
4. Use new sandpaper with appropriate grit; reduce the
feed rate/depth of sanding.
5. Clean off motor, let cool, and reduce workload.
6. Test/repair/replace.
1. Inspect/replace stripped or damaged bolts/nuts, and
re-tighten with thread locking fluid.
2. Tighten/replace/adjust.
3. Relocate/shim machine.
4. Replace dented fan cover; replace loose/damaged
fan.
5. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
Model G1140 G1531 (Mfd. Since 08/14)