Grizzly G0463 owner manual About Service, Troubleshooting

SECTION 7: SERVICE

About 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

Symptom	Possible Cause		Possible Solution
Motor will not start.	1.	E-Stop button is pressed.	1.	Twist E-Stop until in pops out.
	2.	Open circuit in motor or loose connec-	2.	Inspect all lead connections on motor
		tions.		for loose or open connections.
	3.	Blown system fuse.	3.	Replace fuse.
Motor will not start; fuses or circuit break-	1.	Short circuit in line cord or plug.	1.	Repair or replace cord or plug for dam-
ers blow.				aged insulation and shorted wires.
Motor shuts off unexpectedly.	1.	Motor is overloaded due to high feed	1.	Reduce feed rate and amount of
		rate.		material removed.
	2.	Thermal protection unit is overheat-	2.	Wait for system to cool down.
		ed.
Motor overheats.	1.	Motor overloaded.	1.	Reduce load on motor.
	2.	Air circulation through the motor	2.	Clean out motor to provide normal air
		restricted.		circulation.
	3.	Motor brushes are wearing.	3.	Inspect motor brushes, replace if nec-
				essary.
Motor stalls (resulting in blown fuses or	1.	Short circuit in motor or loose connec-	1.	Repair or replace connections on
tripped circuit).		tions.		motor for loose or shorted terminals
				or worn insulation.
	2.	Low voltage.	2.	Correct the low voltage conditions.
	3.	Incorrect fuses or circuit breakers in	3.	Install correct fuses or circuit break-
		power line.		ers.
	4.	Motor overloaded.	4.	Reduce load on motor.
Cutter slows when cutting.	1.	Brushes worn.	1.	Replace brushes (Page 30).
Poor surface finishes.	1.	Feed rate to fast.	1.	Slow feed rate.
	2.	Dull cutter.	2.	Always use newly sharpened cutters.
	3.	Lock not tightened down.	3.	Tighten column and table locks when
				possible to maintain rigidity.
	4.	Gibs loose.	4.	Adjust gibs.
Vibration when running or cutting.	1.	Loose table.	1.	Tighten table locks.
	2.	Loose gibs.	2.	Adjust gibs.
	3.	Feed rate too high.	3.	Slow feed rate or adjust RPM.
Difficulty removing collet from spindle.	1.	Debris in spindle taper or collet taper	1.	Keep all taper surfaces spotlessly
		or both.		clean.
	2.	Head not locked in position.	2.	Lock head in place on column.
G0463 Small Mill/Drill				-25-