g0667X high precision Vs Vertical Mill
-43-
Motor & Electrical (continued)
symptom
possible Cause
possible solution
Machine stalls or is
overloaded.
10. Contactor not getting energized or has poor
contacts.
11. Motor has overheated.
12. spindle rotation switch at fault.
13. Motor is at fault.
14. Frequency drive at fault.
10. test for power on all legs and contactor operation.
replace if faulty.
11. Clean off motor, let cool, and reduce workload.
12. turn switch to FWd/rEV; replace bad switch.
13. test/repair/replace.
14. test/replace.
Machine has vibra-
tion or noisy opera-
tion.
1. Motor or component is loose.
2. pulley is loose.
3. Motor mount loose/broken.
4. Machine is incorrectly mounted or sits
unevenly.
5. Motor fan is rubbing on fan cover.
6. Chuck or cutter is at fault.
7. Motor bearings are at fault.
8. gearbox is at fault.
1. inspect/replace stripped or damaged bolts/nuts, and
re-tighten with thread locking fluid.
2. realign/replace shaft, pulley, setscrew, and key as
required.
3. tighten/replace.
4. tighten/replace anchor studs in floor; relocate/shim
machine.
5. replace dented fan cover; replace loose/damaged
fan.
6. replace out-of-round chuck; replace/resharpen cut-
ter; use appropriate feed rate and cutting rpM.
7. test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
8. rebuild gearbox for bad gear(s)/bearing(s).
