Operation
2-3
Variable Cooking
When Variable Cooking Power is programmed, the
120 volts AC is supplied to the power transformer
intermittently through the contacts of relay (RY-2). RY-2
is operated by the control unit within an varying time
base. Microwave power operation is as follows:
Vari-Mode
ON TIME OFF TIME
Power 10 (High) (100% Power) 32 sec.
0 sec.
Power9(P-90) (Approx. 90%)
30 sec.
2 sec.
Power8(P-80) (Approx. 80%)
26 sec.
6 sec.
Power7(P-70) (Approx. 70%)
24 sec.
8 sec.
Power6(P-60) (Approx. 60%)
22 sec.
10 sec.
Power5(P-50) (Approx. 50%)
18 sec.
14 sec.
Power4(P-40) (Approx. 40%)
16 sec.
16 sec.
Power3(P-30) (Approx. 30%)
12 sec.
20 sec.
Power2(P-20) (Approx. 20%)
8 sec.
24 sec.
Power1(P-10) (Approx. 10%)
6 sec.
26 sec.
Power0(P-0) (0% power)
0 sec.
32 sec.
CONVECTION COOKING CONDITION
Program desired convection temperature by touching the
CONVECTION pad and TEMPERATURE pad. When the
START pad is touched, the following operations occur:
1. The coil of shut-off relays (RY1, RY3, RY5 and RY6)
are energized, the oven lamp, cooling fan motor,
turntable motor and convection motor are turned on.
2. The coil of relay (RY4) is energized by the control
unit. The damper is moved to the closed position,
opening the damper switch contacts. The opening of
damper switch contacts sends a signal to the LSI on
control unit de-energizing relay (RY4) and opening
the circuit to the damper motor.
3. The coil of heater relay (RY3) is energized by the
control unit and the main supply voltage is applied to
the heating element.
The ON/OFF time ratio does not correspond with the
percentage of microwave power, because approx. 2
seconds are needed for heating of the magnetron
filament.
4. When the oven temperature reaches the selected
preheat temperature, the following operations occur:
A. The heater relay is de-energized by the control
unit temperature circuit and thermistor, opening
the circuit to the heating element.
B. The oven will continue to function for 30 minutes,
turning heater on and off, as needed to maintain
the selected preheat temperature. The oven will
shut-down completely after 30 minutes.
CONVECTION COOKING CONDITION
When the preheat temperature is reached, a beep signal
will sound indicating that the holding temperature has
been reached in the oven cavity. Open the door and
place the food to be cooked in the oven.
Touch CONVEC pad first and then the TEMPERATURE
pad. Program desired cooking time by touching the
NUMBER pads. When the START pad is touched, the
following operations occur:
1. The numbers on the digital read-out start to count
down to zero.
2. The oven lamp, turntable motor, cooling fan motor
and convection motor are energized.
3. Heater relay (RY3) is energized (if the cavity
temperature is lower than the selected temperature)
and the main supply voltage is applied to the heating
element to return to selected cooking temperature.
4. Upon completion of cooking time, the audible signal
will sound, and oven lamp, turntable motor, cooling
fan motor and convection motor are de-energized.
At the end of the convection cycle, if the cavity air
temperature is above 275 F, the circuit to RY6 will be
maintained (by the thermistor circuit) to continue
operation of cooling fan motor until the temperature
drops below 245 F, at which time the relay will be
de-energized, turning off the fan motor. Relay RY5
will however, open as soon as the convection cycle
has ended, turning off the convection fan motor.
5. At the end of the convection cook cycle, shut-off relay
(RY4) is energized turning on the damper motor. The
damper is returned to the open position, closing the
damper switch contacts which send a signal to the
control unit, de-energizing shut-off relay (RY4).
Summary of Contents for E30MO75HPS - 1.5 cu. Ft. Drop-Down Door Microwave
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