Section 7: Service; Troubleshooting - Grizzly G9743 Owner's Manual

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix your machine if a problem develops. 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.
Motor & Electrical
Symptom Possible Cause
Machine does not start 1. E-Stop button pressed.
or a breaker trips.
2. Plug/receptacle is at fault or wired incorrectly.
3. Start capacitor is at fault.
4. Wall fuse/circuit breaker is blown/tripped.
5. Motor connection wired incorrectly.
6. Power supply is at fault/switched OFF.
7. Motor ON/OFF switch is at fault.
8. Wiring is open/has high resistance.
9. Motor is at fault.
Machine stalls or is 1. Wrong blade for the workpiece material.
underpowered.
2. Wrong workpiece material.
3. Feed rate/cutting speed too fast for task.
4. Blade is slipping on wheels.
5. Low power supply voltage.
6. Motor bearings are at fault.
7. Plug/receptacle is at fault.
8. Motor connection is wired incorrectly.
9.Motor has overheated.
10.Motor is at fault.
Machine has vibration 1. Motor fan is rubbing on fan cover.
or noisy operation.
2. Blade is at fault.
3. Gearbox is at fault.
4. Wrong blade & too slow of speed.
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Troubleshooting

Possible Solution
1. Twist E-Stop button until it pops out.
2. Test for good contacts; correct the wiring.
3. Test/replace if faulty.
4. Ensure correct size for machine load; replace
weak breaker.
5. Correct motor wiring connections.
6. Ensure hot lines have correct voltage on all legs
and main power supply is switched ON.
7. Replace faulty ON/OFF switch.
8. Check for broken wires or disconnected/cor-
roded connections, and repair/replace as nec-
essary.
9. Test/repair/replace.
1. Use blade with correct properties for your type
of cutting.
2. Use metal with correct properties for your type
of cutting.
3. Decrease feed rate/cutting speed.
4. Adjust blade tracking and tension.
5. Ensure hot lines have correct voltage on all
legs.
6. Test by rotating shaft; rotational grinding/loose
shaft requires bearing replacement.
7. Test for good contacts; correct the wiring.
8. Correct motor wiring connections.
9.Clean off motor, let cool, and reduce workload.
10.Test/repair/replace.
1. Replace dented fan cover; replace loose/dam-
aged fan.
2. Replace/resharpen blade.
3. Rebuild gearbox for bad gear(s)/bearing(s).
4. Change blade and or speed.
G9743 7" x 12" Metal-Cutting Bandsaw