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DIAGNOSIS GUIDE
DISPOSER TROUBLESHOOTING CHART
PROBLEM
POSSIBLE CAUSE
Disposer
fails to
start and
motor
is silent
Disposer
fails for
start and
motor
hums
Disposer
running
noisy
Disposer
grinds
Entire unit
slowly
vibrates
Unit
leaks
Unit
operates
slowly,
labors,
may smoke
Jammed turntable,
free it manually.
Open winding in field.
Rewind Field. See wiring
connections on Page 23 or 24.
Blown fuse on one leg of
3 phase motor. Check circuit.
Change wiring and replace
fuse. See Page 24.
Cutout due to overloading.
Reset overload protector.
Defective control switch.
Replace control switch.
Blown circuit fuse or tripped
circuit breaker. Replace
fuse or reset circuit breaker.
Foreign ungrindable material
in grinding chamber.
Remove obstruction.
Worn bearing in motor,
see Page 14. Replace seal
and bearing if necessary.
Worn grind ring and/or
turntable caused by
backwards rotation of
turntable. Replace
worn parts and check
rotation arrow on turntable,
Page 12. Reverse if needed.
Impeller is stuck,
free it manually.
Broken seal. Replace
seal and inspect bearing.
See Page 13.
Internal gasket leak.
Replace internal gasket.
Blown fuse on one leg of
3 phase motor. Check circuit,
see Page 24. Change circuit
if needed and replace fuse.
25