Grizzly G9249 - Manual (Page 56)

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g9249 12" x 37" Belt drive gap Bed lathe
Motor & Electrical (continued)
symptom possible Cause possible solution
Machine stalls or is
overloaded. 1. Wrong workpiece material.
2. Workpiece alignment is at fault.
3. incorrect spindle speed for task.
4. low power supply.
5. run capacitor is at fault.
6. V-belt(s) is slipping.
7. plug or receptacle is at fault.
8. Motor connection is wired incorrectly.
9. Motor bearings are at fault.
10. Machine is undersized for the task.
11. Motor has overheated.
12. spindle switch is at fault.
13. Motor is at fault.
14. Centrifugal switch is at fault.
1. only process metal that has the correct properties
for your type of machining.
2. re-center and properly secure workpiece in chuck or
faceplate.
3. Correctly set V-belts and gearing for your operation
( Page 51).
4. Make sure all hot lines and grounds are operational
and have correct voltage.
5. test and replace if necessary.
6. Check V-belts and re-tension; replace if necessary
( Page 51).
7. test power plug and receptacle for good contact and
correct wiring.
8. Correct motor wiring ( Page 66).
9. rotate motor shaft to check for noisy or burnt
bearing; repair/replace as necessary.
10. use sharp cutting tools at the correct angle, reduce
feed rate or depth of cut, and use coolant if
possible.
11. Clear obstacles away from the motor fan cover, let
motor cool, and reduce workload on machine.
12. test; replace if necessary.
13. test/repair/replace.
14. Adjust/replace.