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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.
Motor & Electrical
Symptom
Possible Cause
Machine does
1. Emergency Stop button depressed/at fault.
not start, or
power supply
2. Incorrect power supply voltage or circuit size.
breaker
immediately
3. Machine fuse blown.
trips after
4. Power supply circuit breaker tripped or fuse
startup.
blown.
5. EMERGENCY STOP! panel switch stuck/at
fault.
6. Table limit switch engaged/at fault.
7. Sanding belt tracking limit switch engaged/at
fault.
8. Sanding belt tension limit switch engaged/at
fault.
9. Motor wires connected incorrectly.
10. ON/OFF button at fault.
11. Contactor not energized/at fault.
12. Thermal overload relay has tripped/is at fault.
13. Wiring broken, disconnected, or corroded.
14. Transformer at fault.
15. Motor or motor bearings at fault.
Main motor
1. Workpiece material unsuitable for machine.
stalls or is
2. Feed rate too fast/cutting depth too deep.
underpowered.
3. V-belt(s) worn/loose.
4. Pulley/sprocket slipping on shaft or
misaligned.
5. Motor wired incorrectly.
6. Machine is undersized for task.
7. Motor overheated.
8. Contactor not energized/at fault.
9. Motor or motor bearings at fault.
Table moves up
1. Power connections wired out of phase.
when it should
move down and
down when it
should move
up.
Model G0866 (Mfd. Since 11/18)
Troubleshooting
Possible Solution
1. Rotate Emergency Stop button head to reset. Replace
if at fault.
2. Ensure correct power supply voltage and circuit size
(Page 13).
3. Replace fuse/ensure no shorts.
4. Ensure circuit is free of shorts. Reset circuit breaker or
replace fuse.
5. Free stuck switch/replace.
6. Adjust table to correct height/replace switch.
7. Center sanding belt so it is not touching limit switches/
adjust limit switch(es) (Page 48)/replace switch(es).
8. Turn on air pressure and tension sanding belt (Page
35)/replace switch.
9. Correct motor wiring connections (Page 75).
10. Replace button.
11. Test all legs for power; replace if necessary.
12. Reset. Adjust or replace if at fault.
13. Fix broken wires, or disconnected/corroded
connections (Page 68).
14. Inspect; replace if at fault.
15. Replace motor.
1. Only sand wood/ensure moisture is below 20%.
2. Decrease feed rate (Page 37)/cutting depth.
3. Inspect/replace belt(s) (Page 35).
4. Tighten/replace loose pulley/shaft, check for/correct
misalignment.
5. Wire motor correctly (Page 75).
6. Clean/replace sandpaper; reduce feed rate/depth of
cut.
7. Clean motor/let cool, and reduce workload.
8. Test all legs for power; repair/replace if at fault.
9. Replace motor.
1. Correct phase polarity (Page 28).
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