Section 7: Service; Troubleshooting - Grizzly H3140 Owner's Manual

SECTION 7: SERVICE

Review the troubleshooting procedures in this section if a problem develops with your machine. If you need
replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather the
serial number and manufacture date of your machine before calling.
Symptom Possible Cause
Motor will not 1. Breaker or fuse at fault.
start; fuses/circuit
2. Loose connection or short in line cord, plug,
breakers trip.
or motor.
3. Machine attached to incorrect power
circuit.
Motor slows 1. Workpiece pressure is too great.
or stalls when
2. Breaker or fuse at fault.
operating.
3. Incorrect fuses or circuit breakers in power
line.
Machine vibrates 1. Machine placed on uneven surface.
excessively.
2. Incorrect sanding belt tracking.
3. Weak or broken sanding belt tension
spring.
4. Broken/damaged sanding belt.
Sanded surface not 1. Table not square to sanding belt.
square.
Deep sanding 1. Sandpaper damaged or clogged.
grooves or scars in
2. Sandpaper too coarse for desired finish.
workpiece.
3. Workpiece sanded across grain.
4. Too much sanding force on workpiece.
5. Workpiece held still against the belt.
Sanding grains 1. Sanding belt has been stored incorrectly.
easily rub off
sanding surface.
2. Sanding surface has been damaged.
Sanding surface 1. Too much pressure against belt.
clogs quickly or
2. Sanding softwood or has paint/varnish.
burns.
Burn marks on 1. Using too fine of sanding grit.
workpiece.
2. Using too much pressure.
3. Work held still for too long.
Glazed sanding 1. Sanding wet stock.
surfaces.
2. Sanding stock with high residue.
Model H3140 (Mfd. Since 6/02)

Troubleshooting

Possible Solution
1. If necessary, replace/reset fuse/breaker.
2. Inspect/repair cord, plug, and motor for damaged
insulation, shorted wires, or loose connections.
3. Connect to correctly-sized circuit (Page 9).
1. Reduce workpiece pressure on sanding surface.
2. Repair cause of short. Replace/reset fuse/breaker.
3. Install correct fuses or circuit breakers.
1. Properly place machine on level surface.
2. Adjust sanding belt tracking (Page 18).
3. Replace spring.
4. Replace sanding belt.
1. Square table relative to sanding belt (Page 17).
1. Clean/replace sanding surface.
2. Use a finer grit sanding surface.
3. Sand with the grain.
4. Reduce pressure on workpiece while sanding.
5. Keep workpiece moving across sanding surface.
1. Store sanding materials away from heat or damp
conditions; store flat, not folded or bent.
2. Replace sanding material.
1. Reduce pressure on workpiece while sanding.
2. Use different stock; change/clean sanding material
often.
1. Use a coarser grit sanding belt.
2. Reduce pressure on workpiece while sanding.
3. Do not keep workpiece in one place for too long.
1. Dry stock proper before sanding.
2. Use different stock; change/clean sanding material
often.
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