Repair manual

OPERATION
3-2
SOLID STATE DIGITAL - 33285 REV F
Component Reference
NOTE: Refer to FIGURE 9 page 3-9 for compoĆ
nent locations.
1. MODE SELECTOR SWITCH
2. DOOR SWITCH
3. TIME AND TEMPERATURE CONTROLLER
4. AXIAL FAN
5. HIGH LIMIT SWITCH
6. CONTACTOR
7. HEATING ELEMENTS
8. CONVECTION FAN
Operation
1. Power is delivered to terminal N of the mode
selector switch (1). The other leg of power is
not interrupted and will not be discussed.
2. If the mode selector switch is closed between
N and terminal 3, one leg of power will be delivĆ
ered to one side of the door switch (2) terminal
J8 of the time and temperature controller (3)
and the axial fan (4).
3. If the door is closed, the door switch must be
closed sending power to the common terminal
of the time and temperature controller.
4. If a temperature is programmed in the time and
temperature controller, a switch is closed beĆ
tween J8 & J9 sending power to one terminal
of a high limit switch 5. If the high limit switch
(5) is closed, power goes to the contactor (6)
closing it. Power then goes to a set of contacts
powering up the heating elements (7).
5. Contacts within the time and temperature conĆ
trol close between terminals common and NO
sending power to the convection fan (8).
NOTE: The temperature probe used for this
application has a descending temperĆ
ature coefficient.
NOTE: When the mode switch is made beĆ
tween N & 2 and L1 and 1 the oven will
be in cool down.