Electronic Clock And Oven Control; Infinite Switch (Current Sensing) - Maytag Gemini MER6770AAW Service Manual

ELECTRONIC CLOCK AND OVEN
CONTROL
To Gain Access To Electronic Oven Control
1. Disconnect the
appliance from
power source
before servicing.
2. Remove two screws
securing backguard
panel to the end caps.
3. Remove two (2) screws securing
backguard panel to backguard housing.
(Screws located between control panel
and main top).
4. Lift backguard panel up, tilt forward, and
lay panel on protected surface of main
top for servicing.
5. Remove two (2) screws securing control-
mounting plate to backguard.
6. Remove four (4) screws securing control
to control mounting plate.
7. Disconnect wiring and remove/replace
control.
8. Reverse procedure to replace.

INFINITE SWITCH (Current Sensing)

This unit is equipped with controls that
provide an infinite choice of settings from
LOW to HIGH. The control can be set on any
of the numbered settings. To operate, push
in and turn control knob to the desired
setting.
Note: The infinite switch is a current
sensing switch.
The infinite switch is a rotary switch, which
controls the power dissipated by a heating
element. A heater-bimetal opens and closes
the cycling contacts, which applies and
16010107
removes voltage from the heating element.
Control is attained by regulating the ratio of
the time between the opening and closing of
the contacts. This is usually referred to as
input percentage and is controlled by a cam,
which can provide virtually any infinitely
adjustable performance. This performance
is assured when the switch is subjected to
elevated ambient temperatures through
automatic temperature compensation.
The infinite switch stems are color coded for
identification. The silver colored stem
controls the left front and right rear element,
the silver colored stem with a red dot
controls the left rear, and the brass colored
stem controls the right front element.
Amperage is rated at 3-15.5A range +/- 10%.
Note: When replacing the infinite switch,
the switch must be matched to the element.
To Access Control:
1. Disconnect the appliance from power
source before servicing.
2. Remove control knobs.
3. Remove two screws from backguard
panel securing panel to housing.
4. Remove two screws securing backguard
panel to end cap.
5. Lift backguard panel up, tilt forward, and
lay panel on protected surface on main
top for servicing.
6. Remove two (2) mounting screws
securing infinite switch to backguard
panel.
7. Disconnect wiring and remove/replace
control.
8. Reverse procedure to replace.
©2000 Maytag Appliances Sales Company
Section 3. Component Description
3-6