Grizzly 9962ZX, G9962Z, G0582, G0445 instruction manual Troubleshooting, Machine Operations

Troubleshooting

Machine Operations

SYMPTOM				POSSIBLE CAUSE		CORRECTIVE ACTION
Motor will not start.				1.	Limit switch or emergency stop is	1.	Correct situation that caused limit switch to engage, reset the emer-
					at fault.		gency stop button.
				2.	Low voltage.	2.	Check power line for proper voltage.
				3.	Open circuit in motor or loose con-	3.	Inspect all lead connections on motor for loose or open connec-
					nections.		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 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.
ating.				2.	Depth of cut too great.	2.	Reduce depth of cut.
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.	Motor fan is hitting the cover.	2.	Tighten fan or shim cover.
				3.	V-belt is defective.	3.	Replace V-belt. Refer to the Maintenance section.
Sanding Operations
Machine is loud, overheats				1.	Excessive depth of cut.	1.	Decrease depth of cut.
or bogs down in the cut.				2.	Dull or dirty sanding belt.	2.	Replace or clean sanding belt.
Rounded workpiece edges.				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.	Conveyor belt is worn.	2.	Replace conveyor belt.
Workpiece pads		on feed		1.	Pressure rollers set too high.	1.	Lower pressure rollers.
belt.				2.	Dirty conveyor belt.	2.	Clean conveyor belt.
				3.	Conveyor belt is worn.	3.	Replace conveyor belt.
Straight strip of notches on				1.	Pressure rollers are dirty or dam-	1.	Clean or repair pressure rollers.
workpiece.					aged.

For your safety, turn the power switch off and dis- connect the sander from the power source and the air supply before starting the applicable troubleshooting.

-40- G0445/G0582/G9962Z/9962ZX Wide Belt Sander