Grizzly G0547 instruction manual Troubleshooting Guide, Trouble Cause Correction

Troubleshooting Guide

TROUBLE			CAUSE		CORRECTION
Grains easily rub off the belt			1.	Sanding belt/disc has been stored in an	1.	Store sanding belt/disc away from extremely hot or dry temper-
or disc.				incorrect environment.		atures.
			2.	Sanding belt/disc has been smashed or	2.	Store sanding belt/disc flat not bent or folded.
				folded.
Deep sanding grooves or			1.	Sanding belt/disc grit is too coarse for	1.	Use a finer grit sanding belt/disc.
scars in workpiece.				the desired finish.
			2.	Workpiece sanded across the grain.	2.	Sand with the grain.
			3.	Too much sanding force on workpiece.	3.	Reduce pressure on workpiece while sanding.
			4.	Workpiece held still against the	4.	Keep workpiece moving while sanding on the belt/disc.
				belt/disc.
Sanding	surface	clogs	1.	Too much pressure against belt/disc.	1.	Reduce pressure on workpiece while sanding.
quickly or burns.			2.	Sanding softwood.	2.	Use different stock. Or, accept the characteristics of the stock
						and plan on cleaning/replacing belts frequently.
Glazed sanding surfaces.			1.	Sanding wet stock.	1.	Dry stock properly before sanding.
			2.	Sanding stock with high residue.	2.	Use different stock. Or, accept the characteristics of the stock
						and plan on cleaning/replacing belts/discs frequently.
Motor will not start.			1.	Low voltage.	1.	Check power supply for proper voltage.
			2.	Open circuit in motor or loose connec-	2.	Inspect all lead connections on motor for loose or open connec-
				tions.		tions.
Motor will not start; fuses or			1.	Short circuit in line cord or plug.	1.	Inspect cord or plug for damaged insulation and shorted wires.
circuit breakers blow.			2.	Short circuit in motor or loose connec-	2.	Inspect all connections on motor for loose or shorted terminals
				tions.		or worn insulation.
			3.	Incorrect fuses or circuit breakers in	3.	Install correct fuses or circuit breakers.
				power line.
Motor overheats.			1.	Motor overloaded.	1.	Reduce load on motor.
			2.	Incorrect usage of machine.	2.	Reduce the applied load on the machine.
			3.	Air circulation through the motor	3.	Clean out motor to provide normal air circulation.
				restricted.
Motor stalls (resulting in			1.	Short circuit in motor or loose connec-	1.	Inspect connections on motor for loose or shorted terminals or
blown fuses or tripped				tions.		worn insulation.
circuit).			2.	Low voltage.	2	Correct the low voltage conditions.
			3.	Incorrect fuses or circuit breakers in	3.	Install correct fuses or circuit breakers.
				power line.
			4.	Motor overloaded.	4.	Reduce load on motor.
Burn marks on workpiece.			1.	Using too fine of sanding grit.	1.	Use a coarser grit sanding belt/disc.
			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.
Machine slows when			1.	Applying too much pressure to work-	1.	Sand with less pressure—let the movement of the belt/disc do
operating.				piece.		the work.
			2.	Undersized circuit or using ext cord.	2.	Make sure circuit wires are proper gauge & don’t use ext cords!
Machine vibrates			1.	Incorrect motor mounting.	1.	Check/adjust motor mounting.
excessively.			2.	Incorrect sanding belt tension.	2.	Make sure tension lever is in tensioning position. Follow belt ten-
						sioning instructions in this manual.
			3.	Weak or broken tension spring.	3.	Replace spring.
			4.	Idler roller is too loose.	4.	Adjust idler roller.
			5.	Broken/defective sanding belt/disc.	5.	Replace sanding belt/disc.
Workpiece	frequently	gets	1.	Not supporting the workpiece against	1.	Use back stop to support workpiece.
pulled out of your hand.				the stop.
Workpiece	lifts up	from	1.	Sanding on the up spinning side of the	1.	Sand on the down spinning side of the disc.
sanding disc table.				disc

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