Grizzly G0641 owner manual Service, Troubleshooting

troubleshooting

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel- ops. 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.

Troubleshooting

Motor & Electrical

Symptom		Possible Cause		Possible Solution
Machine	does not	1.	Front guard safety switch dis-engaged/at	1.	Secure front guard to the down working position;
start or	a breaker		fault.		replace faulty safety switch.
trips.		2.	Plug/receptacle is at fault or wired incor-	2.	Test for good contacts; correct the wiring.
			rectly.
		3.	Start capacitor is at fault.	3.	Test/replace if faulty.
		4.	Motor connection wired incorrectly.	4.	Correct motor wiring connections.
		5.	Wall fuse/circuit breaker is blown/tripped.	5.	Ensure circuit size is suitable for this machine;
					replace weak breaker.
		6.	Thermal overload relay has tripped.	6.	Turn cut-out dial to increase working amps and push
					the reset pin. Replace if tripped multiple times (weak
					relay).
		7.	Contactor not getting energized/has burnt	7.	Test for power on all legs and contactor operation.
			contacts.		Replace unit if faulty.
		8.	Power supply switched OFF or is at fault.	8.	Ensure power supply is switched on; ensure power
					supply has the correct voltage.
		9.	Wiring is open/has high resistance.	9.	Check for broken wires or disconnected/corroded
					connections, and repair/replace as necessary.
		10. Motor ON/OFF switch is at fault.		10. Replace faulty ON/OFF switch.
		11. Centrifugal switch is at fault.		11. Adjust/replace the centrifugal switch if available.
		12. Motor is at fault.		12. Test/repair/replace.
Machine stalls or is		1.	Workpiece material is not suitable for this	1.	Only cut wood products; make sure moisture content
overloaded.			machine.		is below 20% and there are no foreign materials in
					the workpiece.
		2.	Hold-downs are not holding workpiece in	2.	Properly adjust hold-downs to workpiece; adjust low-
			place; workpiece moves during operation.		ering speeds so that hold-downs clamp workpiece
					before blades begin the cut (Pages 19 & 20).
		3.	Machine is undersized for the task.	3.	Use sharp blade; reduce blade lowering speed.
		4.	Run capacitor is at fault.	4.	Test/repair/replace.
		5.	Motor connection is wired incorrectly.	5.	Correct motor wiring connections.
		6.	V-belts slipping.	6.	Replace bad V-belts as a matched set, and re-ten-
					sion (Page 29).
		7.	Plug/receptacle is at fault.	7.	Test for good contacts; correct the wiring.
		8.	Pulley/sprocket slipping on shaft.	8.	Replace loose pulley/shaft.
		9.	Motor bearings are at fault.	9.	Test by rotating shaft; rotational grinding/loose shaft
					requires bearing replacement.
		10. Motor has overheated.		10. Clean off motor, let cool, and reduce workload.
		11. Contactor not getting energized or has poor		11. Test for power on all legs and contactor operation.
			contacts.		Replace if faulty.
		12. Motor is at fault.		12. Test/repair/replace.
G0641 Double Miter Saw					-31-