Grizzly G0512 instruction manual Troubleshooting Machine, Symptom Possible Cause Corrective Action

Troubleshooting Machine

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 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.	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 connec-	1.	Inspect connections on motor for loose or shorted terminals or
blown fuses or tripped cir-		tions.		worn insulation.
cuit).	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.
Machine slows when oper-	1.	Applying too much pressure to work-	1.	Sand with less pressure—let the movement of the belt do the
ating.		piece.		work.
	2.	Undersized circuit or using ext cord.	2.	Make sure circuit wires are proper gauge & don’t use ext cords!
Loud, repetitious noise com-	1.	Pulley setscrews or keys are missing or	1.	Inspect keys and setscrews. Replace or tighten if necessary.
ing from machine.		loose.
	2.	Motor fan is hitting the cover.	2.	Tighten fan or shim cover.
Machine vibrates excessive-	1.	Stand not stable on floor.	1.	Secure stand to floor, reposition to level surface, or shim stand.
ly.	2.	Incorrect motor mounting.	2.	Check/adjust motor mounting.
	3.	Incorrect sanding belt tension.	3.	Make sure tension lever is in tensioning position. Follow belt ten-
				sioning instructions in this manual.
	4.	Weak or broken tension spring.	4.	Replace spring.
	5.	Idler roller is too loose.	5.	Adjust idler roller.
	6.	Broken/defective sanding belt.	6.	Replace sanding belt.

Disconnect power to the machine when perform- ing any maintenance or repairs. Failure to do this may result in serious personal injury.

G0512 Edge Sander -35-