Stator - InSinkErator SS-50 Service Manual

Stator

Removing the Stator
1. Remove disposer. See "Removing Disposer" on page 7.
2. Remove terminal box, trim band and lower end frame. See
"Lower End Frame (LEF)" on page 19.
3. Mark and disconnect wires from start switch (1 phase only,
see (Figure 29).
4. Disconnect stator wires from overload protector.
5. On 1 phase models, remove capacitor wires by either remov-
ing flag connectors or heating solder joints on capacitor
6. Remove screws and mounting bracket from stator assembly
(Figure 31).
7. Place scribe marks on upper end bell assembly to align with
terminal mounting bracket holes on stator (Figure 32).
8. Lay assembly on its side. Gently tap on rotor shaft assembly
with a soft non-metallic (rubber or nylon) mallet to separate
stator from upper end bell assembly.
Stator is not secured to upper end bell
and may drop out.
Testing Stator Windings
Using an ohmmeter, test the start and run windings for continuity.
If testing indicates open, shorted, or grounded across any combi-
nation, replace the stator.
Testing 1 Phase Stator
1. Disconnect and isolate all stator leads.
2. Capacitor, overload protector and start switch should be test-
ed individually before testing stator. Disconnect all three and
isolate wires from stator before conducting stator test.
3. Using an ohmmeter, check continuity across leads (Figure
33):
#2 and #9 start windings,
#1 and #4 run windings,
#3 and #8 run windings.
4. Check all leads individually to ground. If any continuity is
found, replace stator.
Testing 3 Phase Stator
1. Disconnect and isolate all stator leads.
2. Using an ohmmeter, check continuity across leads (Figure
34).
#1 and #4 #7 and #13
#2 and #5 #8 and #14
#3 and #6 #9 and #15
3. Check all leads individually to ground. If any continuity is
found, replace stator.
20
Overload
Capacitor
Protector
(1 Phase only)
Screw
Screw
Grommet
Figure 31. Terminal Box and Components
Figure 32. Scribe Marks on Lower End Frame
Installing the Stator
1. Install mounting bracket to new stator (Figure 31).
2. Reconnect stator wires to overload protector and capacitor (if
equipped). Reconnect wires to capacitor.
3. Install lower end frame. On 1 phase models, install start
switch. Reconnect stator wires to start switch (Figure 29).
See "Lower End Frame (LEF)" on page 19.
4. Align mounting bracket holes on new stator with scribe marks
on upper end bell assembly (Figure 32). Gently tap stator into
place on upper end bell assembly.
Commercial Disposers
Mounting
Bracket
Mounting
Bracket
Grounding
Bushing
Screw
Terminal Box
Service Manual