Grizzly G0459 owner manual Sanding Operations

Sanding Operations

Symptom			Possible Cause	Possible Solution
Machine stalls or			1. Dust collection ducting is at fault.	1. Seal all leaks, size ducts correctly, eliminate bends,
is underpowered.				and refer to Dust Collection Basics Handbook (ISBN
				0-9635821-2-7) for further recommendations.
			2. Low power supply voltage.	2. Make sure all hot lines and grounds are operational
				and have correct voltage on all legs.
			3. Belt is slipping.	3. Replace bad belt, align pulleys, and re-tension.
			4. Motor connection is wired incorrectly.	4. Correct motor wiring (see Page 40).
			5. Plug or receptacle is at fault.	5. Test power plug and receptacle for good contact and
				correct wiring.
			6. Pulley or sprocket is slipping on shaft.	6. Replace loose pulley and shaft.
			7. Motor bearings are at fault.	7. Rotate motor shaft for noisy or burnt bearings, repair/
				replace as required.
			8. Machine is undersized for the task.	8. Use new sandpaper with appropriate grit, and reduce
				the feed rate/depth of sanding.
			9. Motor has overheated.	9. Unobstructed motor cooling air flow, let motor cool,
				and reduce workload on machine.
			10.Centrifugal switch is at fault.	10.Adjust or replace the centrifugal switch.
			11.Motor is at fault.	11.Test, repair or replace motor.
Machine		lacks	1. V-belt loose.	1. Tighten V-belt (Page 26).
power;		drum
stops		turning	2. Too much pressure on pressure rollers.	2. Reduce pressure roller pressure (Page 31).
under load.
Machine		slows	1. V-belt loose.	1. Tighten V-belt (Page 26).
when	sanding,
making a squeal-
ing noise, espe-			2. V-belt worn out.	2. Replace V-belt (Page 27).
cially on start-up.
Loud	repetitious		1. Pulley setscrews or keys are missing or loose.	1. Inspect keys and setscrews. Replace or tighten if nec-
noise		coming		essary.
from machine.			2. Motor fan is hitting the cover.	2. Adjust fan cover mounting position, tighten fan, or
				shim fan cover.
			3. V-belt is defective.	3. Replace V-belt (Page 27).
Vibration		when	1. Loose drum pillow block bearings.	1. Tighten drum pillow block bearings.
sanding.			2. Worn drum pillow block bearings.	2. Replace drum pillow block bearings.
G r i n d i n g ,			1. Drum bearings lack sufficient grease.	1. Grease the pillow block bearings (Page 21).
screeching, or
rubbing		noise
when	sanding		2. Drum bearings are worn and need replace-	2. Replace the drum bearings.
drum is powered
up.			ment.

-24- G0459 12" Drum Sander