Grizzly T32720 Owner's Manual page 32

Operation
Symptom Possible Cause
achine slows when 1. Operator using too much pressure.
M
operating.
2. RPM too low.
Grinding wheel slips 1. Torque is too low.
during rotation.
Wavy condition 1. Machine vibrating.
on surface of
workpiece.
2. Workpiece not being held firmly.
3. Grinding wheel face uneven.
4. Grinding wheel is too hard.
Lines on surface of 1. Impurity on grinding wheel surface.
workpiece.
2. Workpiece not being held tightly.
3. Grinding wheel dressed incorrectly.
Grinding wheel dulls 1. Operator using too much pressure.
quickly, grit falls off.
2. Wheel is too soft for material being ground.
3. Wheel diameter too small.
4. Wheel dressed incorrectly.
5. Wheel has been stored incorrectly.
6. Wheel is too old.
7. Defective wheel bonding.
Grinding wheel 1. Wheel dressed incorrectly.
clogs.
2. Wrong workpiece material.
3. Dirty water in reservoir.
Stropping wheel 1. Insufficient wheel preparation.
loses performance.
2. Wheel is damaged, worn.
-30-
Possible Solution
1. Use less pressure when grinding or stropping.
2. Increase RPM.
1. Increase torque (Page 19).
1. Make sure machine is placed on a solid, flat
surface.
2. Brace workpiece against tool rest or use a holding
device to firmly retain workpiece.
3. Dress grinding wheel (Page 28).
4. Use softer wheel (Page 18)/reduce feed rate.
1. Dress grinding wheel (Page 28).
2. Brace workpiece against tool rest or use a holding
device to firmly retain workpiece.
3. Re-dress wheel (Page 28).
1. Use less pressure when grinding.
2. Use harder bond (Page 18).
3. Replace wheel (Page 22).
4. Re-dress wheel (Page 28).
5. Replace wheel (Page 22). Only store grinding
wheel in a dry place that is not subject to extreme
temperatures (Page 28).
6. Replace wheel (Page 22). Consult manufacturer to
determine wheel shelf life.
7. Consult manufacturer of grinding wheel/replace
wheel (Page 22).
1. Re-dress wheel (Page 28).
2. Use correct type/size of material (Page 17).
3. Empty, clean, and refill reservoir.
1. Prepare wheel correctly (Page 24).
2. Replace wheel (Page 22).
Model T32720 (Mfd. Since 06/21)