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G0459 12" Drum Sander
Symptom Possible Cause Possible Solution
Machine stalls or
is underpowered.
1. Dust collection ducting is at fault.
2. Low power supply voltage.
3. Belt is slipping.
4. Motor connection is wired incorrectly.
5. Plug or receptacle is at fault.
6. Pulley or sprocket is slipping on shaft.
7. Motor bearings are at fault.
8. Machine is undersized for the task.
9. Motor has overheated.
10.Centrifugal switch is at fault.
11.Motor is at fault.
1. Seal all leaks, size ducts correctly, eliminate bends,
and refer to Dust Collection Basics Handbook (ISBN
0-9635821-2-7) for further recommendations.
2. Make sure all hot lines and grounds are operational
and have correct voltage on all legs.
3. Replace bad belt, align pulleys, and re-tension.
4. Correct motor wiring (see
Page 40).
5. Test power plug and receptacle for good contact and
correct wiring.
6. Replace loose pulley and shaft.
7. Rotate motor shaft for noisy or burnt bearings, repair/
replace as required.
8. Use new sandpaper with appropriate grit, and reduce
the feed rate/depth of sanding.
9. Unobstructed motor cooling air flow, let motor cool,
and reduce workload on machine.
10. Adjust or replace the centrifugal switch.
11. Test, repair or replace motor.
Machine lacks
power; drum
stops turning
under load.
1. V-belt loose.
2. Too much pressure on pressure rollers.
1. Tighten V-belt (
Page 26).
2. Reduce pressure roller pressure (
Page 31).
Machine slows
when sanding,
making a squeal
-
ing noise, espe
-
cially on start-up.
1. V-belt loose.
2. V-belt worn out.
1. Tighten V-belt (
Page 26).
2. Replace V-belt (
Page 27).
Loud repetitious
noise coming
from machine.
1. Pulley setscrews or keys are missing or loose.
2. Motor fan is hitting the cover.
3. V-belt is defective.
1. Inspect keys and setscrews. Replace or tighten if nec
-
essary.
2. Adjust fan cover mounting position, tighten fan, or
shim fan cover.
3. Replace V-belt (
Page 27).
Vibration when
sanding.
1. Loose drum pillow block bearings.
2. Worn drum pillow block bearings.
1. Tighten drum pillow block bearings.
2. Replace drum pillow block bearings.
G r i n d i n g ,
screeching, or
rubbing noise
when sanding
drum is powered
up.
1. Drum bearings lack sufficient grease.
2. Drum bearings are worn and need replace
-
ment.
1. Grease the pillow block bearings (
Page 21).
2. Replace the drum bearings.
Sanding Operations