Jenn-Air JES8750BA Series Service Manual page 14

Testing Procedures
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
Illustration
Convection motor,
2-speed
Oven limit switch
(JES8750BA*)
Oven limit switch
(JES8850B**)
Oven limit switch
(JES9860B**,
JES9800BA*,
JES9900B**)
Oven limit switch
(JES9750BA*)
Hi-limit temperature
switch
(Warming Drawer)
Hi-limit temperature
switch
(Warming Drawer)
Ribbon element, 1200 W
Ribbon element, Dual,
2400 W (1200 W inner,
1200 W outer)
Ribbon element, Dual,
3000 W (1400 W inner,
1600 W outer)
Ribbon element, Triple,
3000 W (1000 W inner,
2000 W middle
2700 W outer)
14
!
Component
Measure voltage ....................................
Check motor windings to ground............
Normally closed, verify operation:
Open: 208° to 222° F (98° to 105° C)...
Closed: 156° to 174° F (69° to 79° C) ..
Normally closed, verify operation:
Open: 130° to 140° F (54° to 60° C).......
Closed: 109° to 121° F (43° to 50° C) ....
Normally closed, verify operation:
Open: 209° to 221° F (98° to 105° C).....
Closed: 144° to 166° F (62° to 74° C) ....
Normally closed, verify operation:
Open: 208° to 222° F (98° to 105° C).....
Closed: 156° to 174° F (69° to 79° C) ....
Normally closed, verify operation:
Open: 135° to 145° F (57° to 63° C).....
Closed: 114° to 126° F (46° to 52° C) ..
Normally closed, verify operation:
Open: 95° to 105° F (35° to 41° C).......
Closed: 79° to 91° F (26° to 33° C)......
Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
WARNING
Test Procedure
16026926
Results
120 VAC. (tolerance: 105 to 135 VAC).
No continuity.
RPM, Lo-speed: Approx. 1440 to 2040.
RPM, Hi-speed: Approx. 1860 to 2460.
Infinite.
Continuity.
Infinite.
Continuity.
Infinite.
Continuity.
Infinite.
Continuity.
Infinite.
Continuity.
Infinite.
Continuity.
Approx. 44 to 49 Ω.
240 VAC.
Approx. 44 to 49 Ω.
Inner:
Approx. 44 to 49 Ω.
Outer:
240 VAC.
Approx. 38 to 42 Ω.
Inner:
Approx. 34 to 37 Ω.
Outer:
240 VAC.
Approx. 52 to 57 Ω.
Inner:
Middle: Approx. 25 to 29 Ω.
Approx. 19 to 24 Ω.
Outer:
240 VAC.
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