Sealey SM914 - Manual (Page 5)

7. MAINTENANCE
PROBLEM CAUSE SOLUTION
Sanding Grains easily rub
off belt or discs.
1. Sanding belt/disc has been stored in an
incorrect environment.
1. Ensure sanding accessories are stored away from
extremely hot or dry temperatures.
2. Sanding belt/disc has been damaged or folded. 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.
1. Use a finer-grit sanding accessory.
2. Workpiece sanded across the grain. 2. Sand with the grain of the wood.
3. Too much sanding force on the workpiece. 3. Reduce pressure on workpiece while sanding.
4. Workpiece held still against the belt-disc for too
long.
4. Keep workpiece moving while sanding on the
sanding accessory.
Sanding surface clogs
quickly.
1. Too much pressure against belt/disc. 1. Reduce pressure on workpiece while sanding.
2. Sanding softwood. 2. Use different stock, different sanding accessories,
or accept that this will happen and plan on cleaning or
replacing belts/discs frequently.
Burns on workpiece. 1. Using a sanding grit that is too fine. 1. Use a coarser-grit sanding accessory.
2. Using too much pressure. 2. Reduce pressure on workpiece while sanding.
3. Work held still for too long. 3. Do not keep workpiece in one place for too long.
Motor will not start. 1. Low voltage. 1. Check power source for proper voltage.
2. Open circuit in motor or loose connections. 2. Inspect all lead connections on motor for loose or
open connections. (Contact service agent)
3. Blown fuse or breaker. 2. Short circuit. (Contact service agent)
4. Improper match between tool and circuit, fuse or
breaker.
Motor will not start – fuses
or circuit breakers tripping
or blowing.
1. Short circuit in line, cord or plug. 1. Inspect cord or plug for damaged insulation and
shorted wires.
2. Short circuit in motor or loose connections. 2. Inspect all connections on motor for loose or shorted
terminals and/or worn insulation.
3. Incorrect fuses or circuit breakers in power line. 3. Install correct fuses or circuit breakers or switch tool
to an appropriately sized circuit.
Motor overheats. 1. Motor overloaded. 1. Reduce load on motor (pressure on object being
sanded).
2. Extension cord too long and of insufficient gauge
(weight).
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. 1. Inspect connections on motor for loose or shorted
terminals or worn insulations. (Contact service agent)
2. Low voltage. 2. Correct low voltage conditions (for example:
improper extension cord length and/or gauge).
3. Incorrect fuses or circuit breakers in power line. 3. Install correct fuses or circuit breakers or plug tool
into an appropriate circuit, matched to an
appropriate fuse or breaker.
4. Excessive sanding pressure overloads motor. 4. Reduce the load on the motor.
Machine slows when
operating.
1. Feed rate too great. 1. Reduce the rate at which the workpiece is fed onto
belt or disc.
2. Undersized circuit or use of undersized extension
cord.
2. Ensure circuit wires or extension cords are proper
gauge, or eliminate use of extension cords.
Machine vibrates
excessively.
1. Incorrect motor mounting. 1. Tighten/strenghten motor mountings
2. Incorrect sanding-belt tension. 2. Adjust tension adjustment knob. Follow
belt-tensioning/tracking instructions in this manual.
3. Weak or broken tension spring. 3. Have tension spring replaced by service technician.
4. Idler roller is too loose. 4. Have service technician adjust idler roller.
5. Broken/defective sanding accessories. 5. Replace sanding belt/disc.
Workpiece frequently gets
pulled out of operator’s
hands.
1. Not supporting the workpiece against the stop. 1. Use the platen (backstop) or mitre gauge to support
the workpiece.
2. Attempting to sand (unaided) a workpiece that is
too small.
2. Use another hand tool or jig to grasp or hold the
workpiece.
Workpiece lifts up from the
sanding disc/table.
1. Sanding on the “up” side of the wheel. 1. Sand on left hand side of sanding disc (as operator
faces the disc).
© Jack Sealey Limited Original Language Version SM914 Issue No.1 07/12/12