-30-
Model G0686 (Mfd. Since 01/15)
SECTION 7: SERVICE
Troubleshooting
Symptom
Possible Cause
Possible Solution
Machine does not
start or a breaker
trips.
1. Power supply switched OFF or at fault.
2. Plug/receptacle at fault/wired wrong.
3. Motor connection wired wrong.
4. Wall circuit breaker tripped.
5. Wiring open/has high resistance.
6. Motor brushes at fault.
7. Motor ON/OFF switch at fault.
8. Motor at fault.
1. Ensure power supply is ON/has correct voltage.
2. Test for good contacts; correct the wiring.
3. Correct motor wiring connections (
Page 33).
4. Ensure circuit size is correct/replace weak breaker.
5. Check/fix broken, disconnected, or corroded wires.
6. Remove/replace brushes (
Page 31).
7. Replace switch.
8. Test/repair/replace.
Machine stalls or is
underpowered.
1. Drill bit not properly aligned with wheel.
2. Motor wired incorrectly.
3. Plug/receptacle at fault.
4. Motor brushes at fault.
5. Machine undersized for task.
6. Motor at fault.
7. Motor bearings at fault.
1. Properly align drill bit with wheel; make light
passes.
2. Wire motor correctly (
Page 33).
3. Test for good contacts/correct wiring.
4. Remove/replace brushes (
Page 31).
5. Use new grinding wheel; reduce the feed rate.
6. Test/repair/replace.
7. Test/repair/replace.
Machine has
vibration or noisy
operation.
1. Motor or component loose.
2. Grinding wheel at fault.
3. Incorrectly mounted to workbench.
4. Drill bit loose.
5. Motor bearings at fault.
6. Motor shaft bent.
1. Inspect/replace damaged bolts/nuts, and re-tighten
with thread locking fluid.
2. Dress/replace grinding wheel.
3. Adjust feet, shim, or tighten mounting hardware.
4. Properly mount the bit in the jig assembly; hold firmly
during operation.
5. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
6. Test with dial indicator and replace motor.
Drill bit not
sharpened to
desired point angle.
1. Pivot base not set at the correct angle.
2. Drill bit not at the correct height.
3. Bit sharpened unevenly or more pressure
applied to one side than the other when
grinding.
1. Set the pivot base to the correct angle.
2. Use the jig assembly height scale to adjust the bit to
the proper height for its diameter.
3. Apply even pressure to both sides of the point when
grinding.
Drill bit smokes or
tip has black, blue,
or purple color.
1. Too much pressure applied.
1. Reduce pressure and feed rate, and discard the
damaged bit.
Wheel dulls or
clogs quickly, grit
falls off.
1. Too much pressure applied.
2 Bad wheel dress.
3. Wheel stored in moist or extreme
temperature environment.
1. Reduce pressure and feed rate.
2. Properly dress the wheel surfaces.
3. Replace wheel; store wheels in dry, moderate
temperature environment.
troubleshooting
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.
Содержание G0686
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