Single Food, Operating Sequence - GE SpaceMakerXL JMV1420 Technical Service Manual

SENSOR COOKING
SINGLE FOOD AUTO COOK
Canned vegetables, frozen vegetables, fresh vegetables,
potatoes, fish fillets, chicken pieces and ground meats
are cooked with their own pad.
To Use Sensor Pads:
1. Place covered food in the oven and press the
matching pad. Oven starts immediately.
2. The oven signals when steam is sensed and
time remaining is counting down. It might be
necessary to turn or stir food.
3. When finished the oven will signal again and
the control will scroll "FOOD IS READY".
Note: Do not open the oven door until time is counting down,
sensor error message will be displayed. When using the
sensor assisted cooking codes, except for CANNED VEG
and FROZEN VEG, it is possible to adjust the oven cooking
time by 10%. (preference control).
OPERATION
DESCRIPTION OF OPERATING SEQUENCE
The following is a description of component functions during
oven operation.
OFF CONDITION
Closing the door activates the door sensing and primary
interlock switches. (In this condition, the monitor switch
contacts are opened.) When oven is plugged in, 120 volts
A.C. is supplied to the smart board. The display panel lights
up for 15 seconds then "PLEASE PRESS CLOCK" scrolls.
Touch the CLOCK pad to set the clock and the oven is ready
for use. If power is disrupted at any time, the above se-
quence recurs, and you must reset the clock after touching
the CLEAR/OFF pad.
COOKING CONDITION
When the START pad is touched the following occurs:
1. Relay contacts are closed and the following components
are turned on: Main Relay oven lamp/fan motor/stirrer motor
Power Relay power transformer
2. 120 volts A.C. is supplied to the primary winding of the
power transformer through the contacts of relay 2 and is
converted to about 3.3 volts A.C. output on the filament
winding, and approximately 2 100 volts on the high voltage
winding.
3. The filament winding voltage heats the magnetron
filament and the H.V. is sent to a voltage doubler circuit.
Turntable on
Pad
Canned Vegetables
Frozen Vegetables
Fresh Vegetables
Potatoes
Fish
Chicken Pieces
Ground Meat
Turntable off
Pad
Canned Vegetables
Frozen Vegetables
Fresh Vegetables
Potatoes
Fish
Chicken Pieces
Ground Meat
4. The microwave energy produced by the magnetron is
channeled through the wave guide into the cavity
feedbox, and then into the cavity where the food is to be
cooked.
5. Upon completion of the cooking time, the power
transformer, oven lamp, etc. are turned off and the
generation of microwave energy is stopped. The oven will
revert to the OFF condition.
6. When the door is opened during a cook cycle, the
monitor switch, door sensing switch, primary interlock
switch and power relay are deactivated with the following
results: The circuits to the cooling fan motor and the high
voltage components are deenergized, the oven lamp
remains on and the digital readout displays the time
remaining in the cook cycle when the door was opened.
7. The monitor switch electrically monitors the operation
of the primary interlock switch and the power relay and is
mechanically associated with the door so that it will
function in the following sequence: When the door opens,
the primary interlock switch, power relay and door
sensing switch open their contacts, then the monitor
switch contacts close.
14
Max Time Serv limit
5:30 4-16 oz
13:00 4-16 oz
8:00 4-16 oz
11:00 1/2-2lbs.
5:30 4-16 oz
12:30 1-8 pieces
7:30 1/2-3lbs
Max Time Serv limit
6:00 4-16 oz
13:00 4-16 oz
8:00 4-16 oz
11:00 1/2-2lbs.
5:30 4-16 oz
12:00 1-8 pieces
6:30 1/2-3 lbs