Section 7: Service; Troubleshooting - Grizzly EXTREME Series 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. Incorrect power supply voltage or circuit size.
not start or
2. Plug/receptacle at fault/wired incorrectly.
power supply
3. Attempting to start machine without filter(s)
breaker
installed.
immediately
trips after
4. Power supply circuit breaker tripped or fuse
startup.
blown.
5. Motor wires connected incorrectly.
6. Thermal overload relay has tripped/at fault.
7. Start capacitor at fault.
8. Centrifugal switch adjustment/contact points
at fault.
9. Contactor not energized/at fault.
10. Wiring broken, disconnected, or corroded.
11. ON button loose/misadjusted/at fault.
12. Auxiliary contactor at fault.
13. Motor or motor bearings at fault.
Machine 1. Filters are dirty/clogged or at end of life.
stalls or is
underpowered.
2. Dust tray is full.
3. Ducting blocked/restricted.
4. Motor wires connected incorrectly.
5. Dust collector is undersized.
6. Plug/receptacle at fault/wired incorrectly.
7. Motor overheated.
8. Run capacitor at fault.
9. Extension cord too long.
10. Contactor not energized/at fault.
11. Centrifugal switch adjustment/contact points
at fault.
12. Motor or motor bearing at fault.
Model G0966 (Mfd. Since 04/23)

Troubleshooting

Possible Solution
1. Ensure correct power supply voltage and circuit size.
2. Test for good contacts, correct wiring (Page 35).
3. Filters must be installed before machine is turned
ON. Starting machine without filters can cause circuit
overload or machine electrical damage.
4. Ensure circuit is free of shorts. Reset circuit breaker or
replace fuse.
5. Correct motor wiring connections (Page 35).
6. Reset. Adjust or replace if at fault.
7. Test/replace if at fault.
8. Adjust centrifugal switch/clean contact points. Replace
either if at fault.
9. Test all legs for power; replace if necessary.
10. Fix broken wires or disconnected/corroded
connections (Page 35).
11. Tighten/adjust/replace button.
12. Replace auxiliary contactor.
13. Replace motor.
1. Clean filters; replace with new filters if performance
does not improve (Page 26).
2. Empty dust tray (Page 27).
3. Remove ducting from dust collector inlet and unblock
the restriction (Page 29).
4. Correct motor wiring connections (Page 35).
5. Move closer to machine/redesign ducting layout/use
larger, more powerful dust collector.
6. Test for good contacts, correct wiring (Page 35).
7. Clean motor, let cool, and reduce workload.
8. Test/replace.
9. Move machine closer to power supply, use shorter
extension cord (Page 11).
10. Test all legs for power; repair/replace if at fault.
11. Adjust centrifugal switch/clean contact points. Replace
either if at fault.
12. Replace motor.
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