Grizzly G9983 instruction manual Troubleshooting, Symptom Possible Cause Corrective Action

TROUBLESHOOTING

SYMPTOM			POSSIBLE CAUSE		CORRECTIVE ACTION
Motor will not start.			1.	Low voltage.	1.	Check power line for proper voltage.
			2.	Open circuit in motor or loose con-	2.	Inspect all lead connections on motor for loose or open connections.
				nections.
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 con-	2.	Inspect all connections on motor for loose or shorted terminals or
				nections.		worn insulation.
			3.	Incorrect fuses or circuit breakers	3.	Install correct fuses or circuit breakers.
				in power line.
Motor overheats.			1.	Motor overloaded.	1.	Reduce load on motor.
			2.	Air circulation through the motor	2.	Clean out motor to provide normal air circulation.
				restricted.
Motor stalls (resulting		in	1.	Short circuit in motor or loose con-	1.	Inspect connections on motor for loose or shorted terminals or worn
blown fuses or tripped cir-				nections.		insulation.
cuit).			2.	Low voltage.	2	Correct the low voltage conditions.
			3.	Incorrect fuses or circuit breakers	3.	Install correct fuses or circuit breakers.
				in power line.
			4.	Motor overloaded.	4.	Reduce load on motor.
Machine slows when oper-			1.	Feed rate too high.	1.	Feed workpiece slower and watch load meter.
ating.			2.	Depth of cut too great.	2.	Reduce depth of cut and watch load meter.
Loud, repetitious noise com-			1.	Pulley set screws or keys are miss-	1.	Inspect keys and set screws. Replace or tighten if necessary.
ing from machine				ing or loose.	2.	Tighten fan or shim cover.
			2.	Motor fan is hitting the cover.
			3.	V-belt is defective.	3.	Replace V-belt. See Maintenance section.
Machine is loud, overheats			1.	Excessive depth of cut.	1.	Decrease depth of cut.
or bogs down in the cut.			2.	Dull sanding belt.	2.	Replace sanding belt.
Edges of wood are rounded.			1.	Excessive depth of cut.	1.	Reduce depth of cut.
Uneven thickness	from	left	1.	Feed table not parallel to sanding	1.	Adjust the table.
to right of board.				roller.
			2.	Feed belt is worn.	2.	Replace feed belt.
Workpiece slips	on feed		1.	Pressure rollers set too high.	1.	Lower pressure rollers.
belt.			2.	Dirty feed belt.	2.	Clean feed belt.
			3.	Feed belt is worn.	3.	Replace feed belt.
Straight strip of notches on			1.	Pressure rollers are dirty or dam-	1.	Clean or repair pressure rollers.
workpiece.				aged.
Snake shaped marks		on	1.	Sanding belt damaged or dirty.	1.	Clean or replace sanding belt.
workpiece.

For your safety, turn switch OFF and dis- connect the machine from power source before any troubleshooting. Please refer to the adjustment section to make correc- tions.

-52- G9983 15" Open-End Wide-Belt Sander