Grizzly g0669X Motor & Electrical continued, Inspect/replace stripped or damaged bolts/nuts, and

Motor & Electrical (continued)

Symptom		Possible Cause		Possible Solution
Machine stalls or is		11. Contactor not getting energized or has poor		11. Test for power on all legs and contactor operation.
overloaded.			contacts.		Replace if at fault.
		12. Motor has overheated.		12. Let cool, Clean off motor, and reduce workload.
		13. Spindle rotation switch at fault.		13. Turn switch to FWD/REV; replace bad switch.
		14. Motor is at fault.		14. Test/repair/replace.
		15. Frequency drive at fault.		15. Test/replace.
Machine	has	1.	Chuck or cutter is at fault.	1.	Replace out-of-round chuck; replace/resharpen
vibration or	noisy				cutter; use appropriate feed rate and cutting RPM.
operation.		2.	Workpiece alignment is poor.	2.	Eliminate workpiece binding; use vise or clamps as
					required for workpiece alignment control.
		3.	Motor or component is loose.	3.	Inspect/replace stripped or damaged bolts/nuts, and
					re-tighten with thread locking fluid.
		4.	Pulley is loose.	4.	Realign/replace shaft, pulley, setscrew, and key as
					required.
		5.	Motor mount loose/broken.	5.	Tighten/replace.
		6.	Machine is incorrectly mounted or sits	6.	Tighten/replace anchor studs in floor; relocate/shim
			unevenly.		machine.
		7.	Motor fan is rubbing on fan cover.	7.	Replace dented fan cover; replace loose/damaged
					fan.
		8.	Motor bearings are at fault.	8.	Test by rotating shaft; rotational grinding/loose shaft
					requires bearing replacement.
		9.	Gearbox is at fault.	9.	Rebuild gearbox for bad gear(s)/bearing(s).

-44- G0669X Precision 10" x 54" VS Milling Machine