-20-
g8749 drum/Flap sander
review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. if you need replacement parts or you are unsure of your repair skills, then feel free to call our technical
support at (570) 546-9663.
SEctiON 7: SERvicE
troubleshooting
Motor & Electrical
symptom
possible Cause
possible solution
Machine does not
start or a breaker
trips.
1. switch disabling key removed.
2. power supply switched
OFF
or at fault.
3. plug/receptacle at fault/wired wrong.
4. start capacitor at fault.
5. Motor connection wired wrong.
6. Wall circuit breaker tripped.
7. Wiring open/has high resistance.
8. Motor on/oFF switch at fault.
9. Motor at fault.
1. install switch disabling key.
2. Ensure power supply is
ON
/has correct voltage.
3. test for good contacts; correct the wiring.
4. test/replace if faulty.
5. Correct motor wiring connections (
Page 23).
6. Ensure circuit size is correct/replace weak breaker.
7. Check/fix broken, disconnected, or corroded wires.
8. replace switch.
9. test/repair/replace.
Machine stalls or is
underpowered.
1. Workpiece material not suitable for
machine.
2. Motor wired incorrectly.
3. plug/receptacle at fault.
4. Motor bearings at fault.
5. Machine undersized for task.
6. Motor overheated.
7. Motor at fault.
1. only cut wood; ensure moisture is below 20%.
2. Wire motor correctly (
Page 23).
3. test for good contacts/correct wiring.
4. test/repair/replace.
5. Clean/replace sandpaper; reduce feed rate/sanding
depth.
6. Clean motor, let cool, and reduce workload.
7. test/repair/replace.
Machine
has
vibration or noisy
operation.
1. Motor or component loose.
2. incorrectly mounted to workbench.
3. Motor mount bolts loose/broken.
4. Motor bearings at fault.
1. inspect/replace damaged bolts/nuts, and re-tighten
with thread locking fluid.
2. shim/tighten mounting hardware.
3. tighten/replace.
4. test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.
