Jenn-Air JES8750BA Series, Service Manual

Page: 14 / 67

Testing Procedures
!
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
14 16026926
© 2006 Maytag Services
Illustration Component Test Procedure Results
Convection motor,
2-speed Measure voltage ....................................
Check motor windings to ground............ 120 VAC. (tolerance: 105 to 135 VAC).
No continuity.
RPM, Lo-speed:
Approx. 1440 to 2040.
RPM, Hi-speed:
Approx. 1860 to 2460.
(JES8750BA*)
Oven limit switch Normally closed, verify operation:
Open:
208° to 222° F (98° to 105° C)...
Closed:
156° to 174° F (69° to 79° C) ..
Infinite.
Continuity.
(JES8850B**)
Oven limit switch Normally closed, verify operation:
Open: 130° to 140° F (54° to 60° C).......
Closed: 109° to 121° F (43° to 50° C) ....
Infinite.
Continuity.
(JES9860B**,
JES9800BA*,
JES9900B**)
Oven limit switch Normally closed, verify operation:
Open: 209° to 221° F (98° to 105° C).....
Closed: 144° to 166° F (62° to 74° C) ....
Infinite.
Continuity.
(JES9750BA*)
Oven limit switch Normally closed, verify operation:
Open: 208° to 222° F (98° to 105° C).....
Closed: 156° to 174° F (69° to 79° C) ....
Infinite.
Continuity.
Hi-limit temperature
switch
(Warming Drawer) Normally closed, verify operation:
Open:
135° to 145° F (57° to 63° C).....
Closed:
114° to 126° F (46° to 52° C) ..
Infinite.
Continuity.
Hi-limit temperature
switch
(Warming Drawer) Normally closed, verify operation:
Open:
95° to 105° F (35° to 41° C).......
Closed:
79° to 91° F (26° to 33° C)......
Infinite.
Continuity.
Ribbon element, 1200 W Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
Approx. 44 to 49
Ω .
240 VAC.
Ribbon element, Dual,
2400 W (1200 W inner,
1200 W outer) Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
Inner:
Approx. 44 to 49 Ω .
Outer:
Approx. 44 to 49 Ω .
240 VAC.
Ribbon element, Dual,
3000 W (1400 W inner,
1600 W outer) Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
Inner:
Approx. 38 to 42 Ω .
Outer:
Approx. 34 to 37 Ω .
240 VAC.
Ribbon element, Triple,
3000 W (1000 W inner,
2000 W middle
2700 W outer) Disconnect wiring to element and
measure cold resistance of terminals. ....
Measure voltage at element ...................
Inner:
Approx. 52 to 57 Ω .
Middle:
Approx. 25 to 29 Ω .
Outer:
Approx. 19 to 24 Ω .
240 VAC.