Convection Bake - Electrolux 30" Service Manual

baking at a set time. The stop time cannot be set for
more than 11 hours and 59 minutes ahead of the time of
day.

Convection bake:

When the convection bake pad is touched and a
temperature is set, two things happen that do not happen
in normal bake. The EOC automatically raises the oven
temperature 15° F above the temperature that was
manually set in the control. If the oven door is closed, the
convection relay on the EOC closes, providing line to
neutral voltage to the convection fan motor and the
convection assist element. This relay remains closed
until the program is canceled or is interrupted by the
opening of the oven door. If interrupted by the opening of
the oven door, the relay will automatically close when the
door is closed.
Fixed Settings:
Meats:
When the meats pad is touched the oven operates
with the convection fan and assist element at the set
temperature.
Cakes:
When the cakes pad is touched the oven operates
at a lower than set temperature with less temperature
differential.
Breads:
When the breads pad is touched the oven operates
at a higher than set temperature with more
temperature differential. In addition, the broil element
is on a higher percentage of the time.
Broil:
When the broil pad is touched, and a temperature is
entered with the numbers between 400° F and 550° F
(usually 550° F), the broil relay on the board closes, and
connects one side of the line to the broil element. In the
tip of the oven sensor is a positive thermistor that
increases in resistance as the oven temperature
increases. The EOC microprocessor reads the resistance
of the oven sensor, and compares it with the programmed
temperature set into the control. Usually you do not want
the broil element to cycle so the oven door is opened to
the broil stop position. If the door is not opened the broil
element will cycle when the set temperature is reached.
Clean:
With the oven door closed, contacts COM to NO of the
oven door switch close. Then when the clean pad is
touched and a clean time is set the door lock relay on the
electronic oven control closes providing line to neutral
voltage (120 VAC) to the lock motor. The lock motor
starts to rotate, closing the contacts of the door lock
switch. When the motor rotates one half turn the
contacts of the door lock switch reopen sending a signal
to the EOC that the door is locked, and to open the
contacts of the lock relay. The lock indicator light then
glows steady and the EOC closes the bake relay
providing power to the bake element. The clean
temperature is preset into the EOC at around 850° F. It
takes about 45 minutes for the oven to reach 850° F.
When the temperature is reached the control cycles the
bake element off and on to maintain the temperature until
the clean time is completed. When the clean time is
completed the EOC removes power from the bake
element and the oven cools down. When the temperature
in the oven goes below 500° F the control closes the
contacts of the lock relay. The lock motor then turns 180
degrees closing and reopening the contacts of the lock
switch and unlocking the door. The open contacts of the
lock switch tells the control that the door is unlocked and
to open the contacts of the lock relay and turn the lock
indicator light off.
Calibration:
To check oven calibration:
1. Place a thermometer or thermocouple in the
center of the oven.
2. Program the oven for bake and the temperature to
350° F. Allow the oven to cycle three times.
3. Average the highest and lowest reading. The
average should be within 10° F of 350° F.
To change the calibration:
To adjust the oven temperature higher:
1. Press the Bake pad for 6 seconds. "0" will appear
in the display.
NOTE: If any numbers other than "0" appear in the
display, the control has been previously calibrated
in the field. (Temperature can be changed ±35° F)
2. To increase the temperature, use the number pads
to enter the desired change. The temperature may
be increased up to 35° F.
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