Grizzly G9742 - Manual (Page 29)

G9742 Metal Cutting Bandsaw (Mfg. Since 11/06
-27-
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.
SECTION 7: SERVICE
Troubleshooting
Motor & Electrical
symptom possible Cause possible solution
Machine does not start
or a breaker trips.
1. plug/receptacle is at fault or wired incorrectly.
2. start capacitor is at fault.
3. Wall fuse/circuit breaker is blown/tripped.
4. Motor connection wired incorrectly.
5. power supply is at fault/switched oFF.
6. Motor oN/oFF switch is at fault.
7. Wiring is open/has high resistance.
8. Motor is at fault.
1. test for good contacts; correct the wiring.
2. test/replace if faulty.
3. Ensure correct size for machine load; replace
weak breaker.
4. Correct motor wiring connections.
5. Ensure hot lines have correct voltage on all
legs and main power supply is switched oN.
6. replace faulty oN/oFF switch.
7. Check for broken wires or disconnected/
corroded connections, and repair/replace as
necessary.
8. test/repair/replace.
Machine stalls or is
underpowered.
1. Wrong blade for the workpiece material.
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.
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.
Machine has vibration
or noisy operation.
1. Motor fan is rubbing on fan cover.
2. Blade is at fault.
3. gearbox is at fault.
4. Wrong blade & too slow of speed.
1. replace dented fan cover; replace loose/
damaged fan.
2. replace/resharpen blade.
3. rebuild gearbox for bad gear(s)/bearing(s).
4. Change blade and or speed.