Grizzly G0641 - Manual (Page 33)

G0641 Double Miter Saw
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Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical
Support at (570) 546-9663.
SECTION 7: SERVICE
Troubleshooting
Motor & Electrical
Symptom Possible Cause Possible Solution
Machine does not
start or a breaker
trips. 1. Front guard safety switch dis-engaged/at
fault.
2. Plug/receptacle is at fault or wired incor-
rectly.
3. Start capacitor is at fault.
4. Motor connection wired incorrectly.
5. Wall fuse/circuit breaker is blown/tripped.
6. Thermal overload relay has tripped.
7. Contactor not getting energized/has burnt
contacts.
8. Power supply switched OFF or is at fault.
9. Wiring is open/has high resistance.
10. Motor ON/OFF switch is at fault.
11. Centrifugal switch is at fault.
12. Motor is at fault.
1. Secure front guard to the down working position;
replace faulty safety switch.
2. Test for good contacts; correct the wiring.
3. Test/replace if faulty.
4. Correct motor wiring connections.
5. Ensure circuit size is suitable for this machine;
replace weak breaker.
6. Turn cut-out dial to increase working amps and push
the reset pin. Replace if tripped multiple times (weak
relay).
7. Test for power on all legs and contactor operation.
Replace unit if faulty.
8. Ensure power supply is switched on; ensure power
supply has the correct voltage.
9. Check for broken wires or disconnected/corroded
connections, and repair/replace as necessary.
10. Replace faulty ON/OFF switch.
11. Adjust/replace the centrifugal switch if available.
12. Test/repair/replace.
Machine stalls or is
overloaded. 1. Workpiece material is not suitable for this
machine.
2. Hold-downs are not holding workpiece in
place; workpiece moves during operation.
3. Machine is undersized for the task.
4. Run capacitor is at fault.
5. Motor connection is wired incorrectly.
6. V-belts slipping.
7. Plug/receptacle is at fault.
8. Pulley/sprocket slipping on shaft.
9. Motor bearings are at fault.
10. Motor has overheated.
11. Contactor not getting energized or has poor
contacts.
12. Motor is at fault.
1. Only cut wood products; make sure moisture content
is below 20% and there are no foreign materials in
the workpiece.
2. Properly adjust hold-downs to workpiece; adjust low-
ering speeds so that hold-downs clamp workpiece
before blades begin the cut (
Pages 19 & 20).
3. Use sharp blade; reduce blade lowering speed.
4. Test/repair/replace.
5. Correct motor wiring connections.
6. Replace bad V-belts as a matched set, and re-ten-
sion ( Page 29).
7. Test for good contacts; correct the wiring.
8. Replace loose pulley/shaft.
9. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
10. Clean off motor, let cool, and reduce workload.
11. Test for power on all legs and contactor operation.
Replace if faulty.
12. Test/repair/replace.
troubleshooting