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Model W1815 (Mfg. Since 10/10)
SERVICE
Troubleshooting
This section covers the most common problems and corrections with this type of
machine. WARNING! DO NOT make any adjustments until power is disconnected and
moving parts have come to a complete stop!
PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION
Motor will not start or is
slow to start.
1. Switch disabling key removed.
2. Break or short in wiring, loose
connections, plug or receptacle is
corroded or miswired.
3. Power supply switched off/has
incorrect voltage.
4. Blown fuse/tripped circuit breaker
at main panel.
5. Motor connection wired
incorrectly.
6. Motor ON/OFF switch at fault.
7. Motor brake not disengaging.
8. Start capacitor has blown.
9. Centrifugal switch at fault.
10. Motor at fault.
1. Re-install switch disabling key.
2. Trace/replace broken or corroded wires, fix loose
connections, correct wiring.
3. Switch power supply on/verify voltage.
4. Correct the cause of overload, then reset/replace
fuse or breaker.
5. Wire motor correctly (refer to inside junction box
cover or manual).
6. Replace switch.
7. Test to see if disc spins freely. If it drags, replce
motor brake and regulator.
8. Test/replace if at fault.
9. Adjust/replace centrifugal switch.
10. Test for shorted windings or bad bearings; repair or
replace.
Machine has excessive
vibration or noise.
1. Workpiece loose or incorrectly
secured.
2. Motor fan rubbing on fan cover.
3. Motor mounting loose.
4. Lock lever is loose.
5. Machine incorrectly mounted to
cabinet.
6. Motor bearings worn or damaged.
1. Use correct holding fixture and re-clamp
workpiece.
2. Fix/replace fan cover; replace loose or damaged
fan.
3. Tighten mounting bolts/nuts; use thread locking
fluid.
4. Tighten the lock lever.
5. Level/shim base; tighten/adjust mounting hardware
or feet.
6. Replace motor bearings or motor.
Motor overheats. 1. Motor brake not releasing. 1. Test to see if sanding disc spins freely. If not, replace
motor brake and regulator.
Machine stalls or slows
when operating.
1. Too much pressure when feeding
workpiece
2. Workpiece is warped.
3. Workpiece is incorrect for
machine.
4. Motor connection wired
incorrectly.
5. Motor overheated.
6. Centrifugal switch at fault.
7. Motor at fault.
1. Reduce pressure when feeding workpiece.
2. Straighten workpiece or use a different one.
3. Only sand wood and ensure moisture is below 20%.
4. Review wiring diagram on motor cover; correct wire
connections.
5. Let cool, clean motor, and reduce workload.
6. Adjust/replace centrifugal switch if available.
7. Test, repair, or replace motor.
Motor takes longer than
7 seconds to stop sanding
disc.
1. Motor brake components at fault. 1. Replace motor brake components. Call Tech Support
if you need assistance.
Miter bar binds in miter
slot.
1. Miter slot dirty or gummed up. 1. Carefully clean miter slot.
Workpiece angle incorrect
or out of square.
1. Pointer or scale not calibrated
correctly. Miter gauge or table not
correctly aligned.
1. Adjust pointer or scale to reflect real path of cut.