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Refer to the "WIRING DIAGRAM" on page 23.
MICROWAVE COOKING
TIME COOKING
1. When the food is placed inside the oven door is closed.
2) The contacts of the interlock monitor switch open.
This switch creates short circuit to below 8A fuse and stop magnetron oscillation when door is
opened during operation under abnormal condition (i.e. both the contacts of primary interlock switch
do not open the circuit).
3) The contact of primary interlock switch close the primary circuit.
1) Cooking the function indicating bar located on the digital light to indicate that function have been set.
2) The time you set appears in the display window.
3) The touch control circuit memorizes the cooking program you set.
3. When the start pad is touched.
* The RELAY '1" and '2' are controlled by the touch control circuit.
1) 230VAC is applied to the high voltage transformer through the contacts of RELAY "1" (See page 23)
3) The oven lamp lights the inside of the oven.
4) Indicator light turns on to indicate function operation. Cooking time starts count down.
6) A high voltage of 2000 Volts AC is generated in the secondary of high voltage transformer and
this secondary voltage is increased by the action of the diode and the charging of the high voltage
capacitor. This resultant DC voltage is then applied to the anode of the magnetron. As shown in
Fig. 2 the first half cycle of the high voltage produced in the high voltage transformer secondary
charges the high voltage capacitor. Current flow is in the direction of the dotted-line during the
second half cycle, the voltage produced by the transformer secondary, and the charge of the high
voltage capacitor are combined and applied to the magnetron as shown by the solid line so that
oscillations begins.
24
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