9
TROUBLESHOOTING
TROUBLESHOOTING
SYMPTOM
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Sanding Grains
easily rub off belt
or discs.
1. Sanding belt/disc has been stored in
an incorrect environment.
2. Sanding belt/disc has been
damaged or folded.
1. Ensure sanding accessories are stored away
from extremely hot or dry temperatures.
2. Store sanding accessories flat – not bent or
folded.
Deep sanding
grooves or scars
in workpiece.
1. Sanding belt/disc grit is too coarse
for the desired finish.
2. Workpiece sanded across the grain.
3. Too much sanding force on the
workpiece.
4. Workpiece held still against the belt/
disc for too long.
1. Use a finer-grit sanding accessory.
2. Sand with the grain of the wood.
3. Reduce pressure on workpiece while sanding.
4. Keep workpiece moving while sanding on the
sanding accessory.
Sanding surface
clogs quickly.
1. Too much pressure against belt/
disc.
2. Sanding softwood.
1. Reduce pressure on workpiece while sanding.
2. Use different stock, different sanding
accessories, or accept that this will happen
and plan on cleaning or replacing discs/belts
frequently.
Burns on
workpiece.
1. Using a sanding grit that is too fine.
2. Using too much pressure.
3. Work held still for too long.
1. Use a coarser-grit sanding accessory.
2. Reduce pressure on workpiece while sanding.
3. Do not keep workpiece in one place for too
long.
Motor will not
start –
fuses or circuit
breakers tripping
or
blowing.
1. Short circuit in line, cord or plug.
2. Short circuit in motor or loose
connections.
3. Incorrect fuses or circuit breakers in
power line.
1. Inspect cord or plug for damaged insulation
and shorted wires.
2. Inspect all connections on motor for loose or
shorted terminals and/or worn insulation.
3. Install correct fuses or circuit breakers or
switch tool to an appropriately size circuit.
Motor overheats.
1. Motor overloaded.
2. Extension cord too long and of
insufficient gauge (weight).
1. Reduce load on motor (pressure on object
being sanded).
2. Utilize an extension cord of appropriate gauge
and length or plug tool directly into outlet.
Motor stalls
(resulting in blown
fuses or tripped
circuit).
1. Short circuit in motor or loose
connections.
2. Low voltage.
3. Incorrect fuses or circuit breakers in
power line.
4. Motor overload.
1. Inspect connections on motor for loose or
shorted terminals or worn insulations.
2. Correct low voltage conditions (for example:
improper extension cord length and/or gauge).
3. Install CORRECT fuses or circuit breakers or
plug tool into an appropriate circuit, matched to
an appropriate fuse or breaker.
4. Reduce the load on the motor.
Machine slows
when
operating.
1. Feed rate too great.
2. Undersized circuit or use of
undersized extension cord.
1. Reduce the rate at which the workpiece is fed
into the working area of the tool.
2. Ensure circuit wires or extension cords are
proper gauge, or eliminate use of extension
cords.
Machine vibrates
excessively.
1. Incorrect motor mounting.
2. Incorrect sanding-belt tension.
3. Weak or broken tension spring.
4. Idler roller is too loose.
5. Broken/defective sanding
accessories.
1. Have motor mountings inspected by service
technician.
2. Adjust tension adjustment knob. Follow belt-
tensioning/ tracking instructions in this manual.
3. Have tension spring replaced by service
technician.
4. Have service technician adjust idler roller.
5. Replace sanding belt/disc.
Workpiece
frequently
gets pulled out of
operator’s hands.
1. Not supporting the workpiece
against the stop.
2. Attempting to sand (unaided) a
workpiece that is too small.
1. Use the platen (backstop) or mitre gauge to
support the workpiece.
2. Use another hand tool or jig to grasp or hold
the workpiece.
Workpiece lifts up
from the sanding
disc/table.
Sanding on the “up” side wheel.
Sand on right side of sanding disc (as operator
faces the disc).
