
TROUBLESHOOTING
South Bend Tools
For Machines Mfd. Since 02/21
Model SB1097
-45-
TROUBLESHOOTING
If you need replacement parts, or if you are unsure how to do any of the solutions given here, feel free
to call us at (360) 734-1540.
Machine does not
start or power
supply breaker
trips immediately
after startup.
1.
E-Stop button depressed/at fault or
disabling key removed.
1.
Rotate E-Stop button head to reset or re-install
disabling key. Replace if at fault.
2.
Incorrect power supply voltage or
circuit size.
2.
Ensure correct power supply voltage and circuit
size.
3.
Power supply circuit breaker
tripped or fuse blown.
3.
Ensure circuit is free of shorts. Reset circuit breaker
or replace fuse.
4.
Motor wires connected incorrectly.
4.
Correct motor wiring connections (Page 48).
5.
Wiring broken, disconnected, or
corroded.
5.
Fix broken wires or disconnected/corroded
connections.
6.
Touch screen controller at fault.
6.
Replace touch screen controller.
7.
VFD at fault.
7.
Inspect VFD; replace if at fault.
8.
Converter at fault.
8.
Inspect converter; replace if at fault.
9.
Motor or motor bearings at fault.
9.
Replace motor.
Machine has
vibration or noisy
operation.
1.
Motor or component loose.
1.
Replace damaged or missing bolts/nuts or tighten if
loose.
2.
Drive roller hex nut missing or
loose.
2.
Replace or tighten if necessary (Page 44).
3.
Machine incorrectly mounted/
resting on floor.
3.
Tighten mounting hardware; relocate/shim
machine.
4.
Motor fan rubbing on fan cover.
4.
Fix/replace fan cover; replace loose/damaged fan.
5.
Motor bearings at fault.
5.
Test by rotating shaft; rotational grinding/loose
shaft requires bearing replacement.
Symptom
Possible Cause
Possible Solution
Machine stalls or is
underpowered.
1.
Workpiece material unsuitable for
machine.
1.
Only sand wood/ensure moisture is below 20%
(Page 24).
2.
Gearbox gear broken or gear teeth
stripped.
2.
Replace broken or stripped gears.
3.
Motor wires connected incorrectly.
3.
Correct motor wiring connections (Page 48).
4.
Machine undersized for task.
4.
Clean (Page 41)/replace sandpaper (Page 25);
reduce feed rate/sanding depth.
5.
Motor overheated.
5.
Clean motor, let cool, and reduce workload.
6.
Extension cord too long.
6.
Move machine closer to power supply; use shorter
extension cord.
7.
Motor or motor bearings at fault.
7.
Replace motor.
Sanding belt
slaps or vibrates
excessively.
1.
Incorrect sanding belt tension.
1.
Make sure tension lever is engaged (Page 25).
2.
Belt tracking needs adjustment.
2.
Adjust sanding belt tracking (Page 28).
3.
Broken/defective sanding belt.
3.
Replace sanding belt (Page 25).
4.
Idler or drive roller is loose.
4.
Tighten idler roller or adjust drive roller (Page 44).
5.
Weak or broken tension spring.
5.
Replace spring.
Sanded surface not
square when platen
tilt is set to 90
°
and
miter gauge is set
to 0
°
.
1.
Platen not perpendicular to main
table.
1.
Calibrate tilt scale (Page 42).
2.
Miter gauge not perpendicular to
platen/belt.
2.
Calibrate miter gauge scale (Page 43).