Grizzly GO739 owner manual Service, Troubleshooting

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support at (570) 546-9663. Note: Please gather the serial number and manufacture date of your machine before calling.

Troubleshooting

Symptom					Possible Cause		Possible Solution
Motor will not start.					1.	Switch disabling key removed.	1.	Insert key to enable switch.
					2.	Loose connections at motor or switch.	2.	Inspect all motor connections for loose or open
								connections.
					3.	Motor brushes worn.	3.	Replace motor brushes as a set.
Motor	will		not		1.	Short circuit in line cord or plug.	1.	Inspect cord and plug for damaged insulation
start; fuses or								or shorted wires.
circuit breakers					2.	Loose connections at motor switch.	2.	Inspect all motor connections for loose or
blow.
								shorted terminals or worn insulation.
					3.	Switch, bridge rectifier or motor at fault.	3.	Replace the component at fault.
Motor		stalls			1.	Motor overloaded.	1.	Reduce feeding pressure.
(resulting			in
blown fuses or
tripped circuit).
Machine slows					1.	Workpiece pressure is too great.	1.	Secure machine to workbench.
when operating.
Deep			sanding		1.	Sanding sleeve too coarse for the	1.	Use a finer grit sanding sleeve.
grooves		or	scars in			desired finish.
workpiece.					2.	Workpiece sanded across the grain.	2.	Sand with the grain.
					3.	Too much feeding pressure against	3.	Reduce pressure on workpiece while sanding.
						workpiece.
Grains	rub		off	the	1.	Sanding sleeve has been stored in an	1.	Store sanding sleeve away from extremely dry
sanding sleeve.						incorrect environment.		or hot temperatures.
					2.	Sanding sleeve has been folded or	2.	Store sanding sleeves separately and not
						smashed.		folded or flat.
Sanding		surfaces			1.	Too much pressure against sleeve.	1.	Reduce pressure on workpiece while sanding.
clog quickly or burn.					2.	Sanding softwood or wood with a high	2.	Either use different wood or plan on cleaning/
						sap content.		replacing sleeves frequently.
Burn	marks			on	1.	Using too fine of sanding grit.	1.	Use a coarser grit sanding sleeve.
workpiece.					2.	Using too much pressure.	2.	Reduce pressure on workpiece while sanding.
					3.	Work held still for too long.	3.	Do not keep workpiece in one place for too long.

-20- Model G0739 (Mfg. Since 2/12)