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Operation
TURNTABLE MOTOR
The turntable motor rotates the turntable located in
the bottom of the oven cavity, so that the food on the
turntable is cooked evenly during cooking. The turntable
may turn in either direction.
COOLING FAN MOTOR
The cooling fan motor drives a blade which draws in
external cool air. This cool air is directed through the
air vanes surrounding the magnetron providing cooling.
This air is channelled through the oven cavity to remove
steam and vapors given off from the heating foods. It is
then exhausted through the exhausting air vents at the
oven cavity.
MONITOR FUSE
1. The monitor fuse blows when the contacts (COM-
NO) of the primary switch remain closed with the
oven door open and when the monitor switch closes.
2. If the wire harness or electrical components are
shortcircuited, this monitor fuse blows to prevent an
electric shock or fire hazard.
CAVITY TEMPERATURE FUSE
The cavity temperature fuse, located on the top of the
oven cavity, is designed to prevent damage to the oven
by fire. If the food load is overcooked, by either error in
cook time or defect in the control unit, the oven cavity
temperature fuse will open.
Under normal operation, the cavity temperature fuse
remains closed. However, when abnormally high
temperatures are reached within the oven cavity, the
cavity temperature fuse will open at 302°F (150°C)
causing the oven to shut down.
NOTE: This is fuse. It does not reset.
C/T TEMPERATURE FUSE
The C/T fuse located near the magnetron is designed to
prevent damage to the magnetron if an over heated
condition develops in the tube due to cooling fan failure,
obstructed air guide, dirty or blocked air intake, etc.
Under normal operation, the C/T fuse remains closed.
However, when abnormally high temperatures are
reached within the magnetron, the C/T fuse will open at
302°F(150°C) causing the oven to shut down.
1. The C/T fuse blows when the contacts (COM-NO) of
the secondary interlock relay (RY2) and primary
interlock switch remain closed with the oven door
open and when the monitor switch closes.
2. If the wire harness or electrical components are
shortcircuited, this monitor fuse blows to prevent an
electric shock or fire hazard.
NOTE: This is fuse. It does not reset
Sensor Cooking Condition
Using the SENSOR COOK function, the foods are
cooked without figuring time, power level or quantity.
When the oven senses enough steam from the food, it
relays the information to its microprocessor which will
calculate the remaining cooking time and power level
needed for best results.
When food is cooked, water vapor is developed. The
sensor "senses" the vapor and its resistance increases
gradually. When resistance reaches the value set
according to the menu, supplementary cooking is started.
The time of supplementary cooking is determined by
experiment with each food category and inputted into the
LSI.
An example of how the sensor works:
(BAKED POTATOES)
1. Potatoes at room temperature. Vapor is emitted
very slowly.
2. Heat Potatoes. Moisture and humidity is emitted
rapidly. You can smell the aroma as it cooks.
3. Sensor detects moisture and humidity and
calculates cooking time and variable power.
AH SENSOR
2-4
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