Grizzly G0477 owner manual Service, Troubleshooting Guide

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix your machine if a problem develops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical Support at (570) 546-9663.

Troubleshooting Guide

Motor & Machine Operation

Symptom	Possible Cause		Possible Solution
Motor will not start.	1.	Machine circuit breaker has tripped.	1.	Press the circuit breaker reset button; inves-
				tigate reason it tripped to prevent future
				problems.
	2.	Low voltage.	2.	Check power line for proper voltage.
	3.	Open circuit in motor or loose connec-	3.	Inspect all lead connections on motor for
		tions.		loose or open connections.
Fuses or circuit breakers blow.	1.	Short circuit in line cord or plug.	1.	Repair or replace cord or plug for damaged
				insulation and shorted wires.
Motor fails to develop full power	1.	Power line overloaded with lights,	1.	Reduce load on power line.
(output of motor decreases rapidly		appliances, and other motors.
with decrease in voltage at motor	2.	Undersized wires or circuits too long.	2.	Increase wire sizes or reduce length of the
terminals).				circuit.
	3.	Worn motor brushes.	3.	Replace motor brushes (Page 29)
Motor overheats.	1.	Motor overloaded during operation.	1.	Reduce cutting load; take lighter cuts.
	2.	Air circulation through the motor	2.	Clean out motor, fan and dust collection
		restricted.		ducting to provide normal air circulation.
Motor stalls or shuts off during a	1.	Motor overloaded during operation.	1.	Reduce cutting load; take lighter cuts.
cut.	2	Machine circuit breaker has tripped.	2.	Press the circuit breaker reset button.
	3.	Short circuit in motor or loose connec-	3.	Repair or replace connections on motor for
		tions.		loose or shorted terminals or worn insula-
				tion.
	4.	External circuit breaker tripped.	4.	Install correct circuit breaker; reduce # of
				machines running on that circuit.
	5.	Worn motor brushes.	5.	Replace motor brushes (Page 29)
Cutterhead slows or squeals when	1.	Belt(s) stretched or worn out.	1.	Replace belt(s) (Page 28)
cutting, especially on start-up.
Loud repetitious noise coming from	1.	Pulley set screws or keys are missing	1.	Inspect keys and set screws. Replace or
machine.		or loose.		tighten if necessary.
	2.	Dust collector fan is hitting the cover.	2.	Adjust fan cover mounting position, tighten
				fan, or shim fan cover.
	3.	Belt(s) damaged.	3.	Replace belt(s) (Page 28)
Vibration when running or cutting.	1.	Loose or damaged moulding or plan-	1.	Tighten or replace knife or blade.
		ing knife.
	2.	Damaged belt(s).	2.	Replace belt(s) (Page 28)
	3.	Worn cutterhead bearings.	3.	Check/replace cutterhead bearings.

Model G0477 15" Planer/Moulder -25-