Jet Tools 22-44 Plus - Manual (Page 17)

17
Troubleshooting Guide
Problem Possible
Cause Solution
Conveyor belt does not
move.
Shaft coupler not attached. Attach shaft coupler.
Conveyor rollers run
intermittently.
Shaft coupling loose.
Align shaft flats of gear motor and
drive roller and tighten shaft coupling
set screws.
Abrasive Strip Comes
off Drum. 1. Slack in abrasive strip on drum.
2. Abrasive
improperly wrapped.
1. Remove slack in strip.
2. Read section on wrapping
abrasive strips.
Abrasive Strip Loose.
1. Strip caught on inside edge of
slot, or on inboard side of drum.
2. Strip not cut properly.
1. Re-adjust strip end in slot and/or
trim abrasive edge.
2. Recut and install abrasive strip.
Abrasive Loads up
Prematurely.
1. Excessive depth of cut.
2. Excessive
feed rate.
3. Inadequate dust collection.
4. Inadequate
abrasive.
1. Reduce depth of cut.
2. Use slower feed rate.
3. Increase airflow at dust ports.
4. Use open-coat abrasive.
Line or Groove in Stock. 1. Inconsistent feed rate. 1. Do not stop or change feed rate.
Wood Burns.
1. Abrasive strip overlapped.
2. Excessive depth of cut.
3. Depth of cut excessive for fine
grit.
4. Feed rate too slow.
5. Abrasive
loaded.
6. Worn abrasives.
1. Re-wrap abrasive strip.
2. Reduce depth of cut.
3. Use coarser grit or reduce depth
of cut.
4. Increase feed rate.
5. Clean
abrasives.
6. Replace abrasives.
Board slips on conveyor
belt.
1. Tension rollers too high.
2. Excessive
feed rate.
3. Dirty or word conveyor belt.
1. Lower tension rollers.
2. Reduce feed rate.
3. Replace conveyor belt.
Sander motors slow or
stall
1. Improper conveyor belt tension.
2. Excessive depth of cut.
3. Excessive
feed rate.
1. Adjust belt tension.
2. Reduce depth of cut.
3. Reduce feed rate.
Rippled sanded surface
A. Non
uniformly
spaced ripples.
B. Uniformly spaced
ripples.
A. Uneven feed rate.
B. Conveyor bed flexing or
vibration.
A1. Conveyor belt slipping, see
above.
A1. Board slips on conveyor, see
above.
A1. Power feed gear motor stalls,
see above.
B1. Reduce depth of cut.
B1. Reduce feed rate.
B1. Check for loose bolts, shaft
coupling set screws or out of
balance drum.
Gouging of wood.
1. Inconsistent feed rate.
2. Stock slipping on conveyor.
3. Workpiece not properly
supported.
1. Maintain constant feed rate (by
hand).
2. Excessive depth of cut
(PowerFeed) or inadequate hold
down pressure.
3. Add work supports for long
workpieces.
Snipe 1. Improper tension rollers setting 1. See tension roller adjustment.
Motor overload
protector trips or shop
wiring breaker trips.
1. Excessive load on sanding drum
and motor.
2. Too many tools on circuit.
3. Excessive length or inadequate
size extension cord.
1. Allow motor to cool and reset
overload button.
2. Have a certified electrician
correct the shop wiring problem.
3. Use a shorter heavier gauge
extension cord.