InSinkErator SS-50 Service Manual page 29

Problem
Motor hums but does not run; water runs.
Disposer runs briefly, then trips overload
protector.
Disposer runs slow and/or stops when
food waste is inserted.
26
Cause
Jammed rotating shredder.
Stator/lower end frame/upper
end bell misaligned (thru bolts
loose, bent, or broken.
Rotor shaft binding against
stator core.
Start switch inoperative
(1 Phase only).
Stator windings open.
Weak capacitor charge
(1 Phase only).
Improper voltage to disposer.
Incorrect wiring at motor and/
or starting switch or solenoid
valve.
Centrifugal actuator stuck open
or closed, or actuator spring is
loose (1 Phase only).
Start switch contacts arced
(1 Phase only).
Stator windings shorted.
Water in stator.
Disposer jammed.
Improper power supply.
Improper wiring connection.
Electrical supply line over-
loaded.
Faulty or improperly connected
overload protector.
Low voltage power supply
connected to high voltage sta-
tor connections.
Commercial Disposers
Solution
See previous "Jammed rotating shredder" solution.
Remove and realign sections. Ensure thru bolts are
not bent or broken. Replace bolts if necessary.
Check inside diameter of stator core and outside di-
ameter of rotor shaft core for score marks and replace
stator or rotor shaft if necessary. See "Stator" on page
20 or "Lower End Frame (LEF)" on page 19.
Check for worn bearings and replace if necessary.
See "Repairing Upper End Bell Assembly" on page 13.
Replace start switch. See "Replacing Start Switch
(1 Phase Models)" on page 19.
Test stator windings and replace stator if open. See
"Stator" on page 20.
Check for water leaks and repair as necessary.
Test capacitor and replace if necessary. See "Testing
Capacitor" on page 17.
Test power supply for proper voltage and phase, and
correct if necessary.
Refer to the appropriate wiring diagram.
Inspect centrifugal actuator. Replace rotor assembly.
Replace start switch. See "Replacing Start Switch
(1 Phase Models)" on page 19.
Test stator windings and replace stator if open. See
"Stator" on page 20.
Check for water leaks and repair as necessary.
Inspect and fix water leak. See Water in Stator in this
section.
See previous "Jammed Rotating Shredder" solution.
Electrical supply must be connected by an electrician.
See applicable wiring diagram and reconnect wiring.
Connect disposer to another circuit. Disposer should
only be on appliance circuit.
See applicable wiring diagram for correct connections
and/or replace overload if necessary. See "Overload
Protector" on page 16.
See applicable wiring diagram and reconnect motor
leads for corresponding voltage.
Service Manual