R-875/885 -
10
Note:
The On/Off time ratio does not exactly correspond to the
percentage of microwave power, because approx. 3
seconds are needed for heating up the magnetron
filament.
GRILL COOKING CONDITION
TOP GRILL (Figure O-3a)
In this condition the food is cooked by the top grill heating
element . Rotate the COOKING MODE dial to
TOP GRILL
setting. And enter the desired cooking time by rotating the TIME/
WEIGHT dial. When the START button is pressed, the following
operations occur:
1. The numbers on the digital readout start the count down to
zero.
2. The oven lamp, cooling fan motor and turntable motor are
energized.
3. The relay RY3 is energized and the main supply voltage is
applied to the top grill heating element.
4. Now, the food is cooked by the top grill heating element.
BOTTOM GRILL (Figure O-3b)
In this condition the food is cooked by bottom grill heating
element energy. Rotate the COOKING MODE dial to
BOT-
TOM GRILL setting. And enter the desired cooking time by
rotating the TIME/WEIGHT dial. When the START button is
pressed, the following operations occur:
1. The numbers on the digital readout start the count down to
zero.
2. The oven lamp, cooling fan motor and turntable motor are
energized.
3. The relay RY4 is energized and the main supply voltage is
applied to the bottom grill heating element.
4. Now, the food is cooked by the bottom grill heating element.
TOP AND BOTTOM GRILLS (Figure O-3c)
In this condition the food is cooked by top and bottom grill heating
elements energy. Rotate the COOKING MODE dial to
TOP
AND BOTTOM GRILLS setting. And enter the desired cooking
time by rotating the TIME/WEIGHT dial. When the START button
is pressed, the following operations occur:
1. The numbers on the digital readout start the count down to
zero.
2. The oven lamp, cooling fan motor and turntable motor are
energized.
3. The relay RY4 is energized and the main supply voltage is
applied to the bottom grill heating element.
4. The relay RY3 is energized and the main supply voltage is
applied to the top grill heating element.
5. Now, the food is cooked by the top and bottom grill heating
elements.
CONVECTION COOKING CONDITION
PRE-HEATING (Figure O-4)
Rotate the COOKING MODE dial to the convection setting.
And programme the desired convection temperature by touching
CONVECTION button. When the STARTbutton is touched, the
following operations occur:
1. The coil shut-off relays RY1 and RY6 are energized, the oven
lamp, cooling fan motor and turntable motor are turned on.
2. The coil shut-off relays RY3 and RY4 are energized by
control unit and the main supply voltage is added to the top
and bottom heating elements.
3. When the oven temperature reaches the selected pre-heat
temperature, the following operations occur:
3-1. The coil shut-off relays RY3 and RY4 are energized by
control unit temperature circuit and thermistor, opening the
circuit to the top and bottom grill heating elements.
3-2. The oven will continue to function for 30 minutes, turning the
top and bottom heating elements on and off, as needed to
maintain the selected pre-heat temperature. The oven will
shut-down completely after 30 minutes.
CONVECTION COOKING (Figure O-4)
When the pre-heat temperature is reached, a beep signal will
sound indicating that the holding the temperature has been
reached in the oven cavity. Open the door and place the food to
cooked in the oven. Rotate the COOKING MODE dial to the
convection setting. And enter the cooking time by rotating the
TIME/WEIGHT dial. And select the desired cooking tempera-
ture by pressing the CONVECTION button. When the START
button is pressed, the following operations occur:
1. The numbers on the digital readout start the count down to
zero.
2. The oven lamp, cooling fan motor, turntable motor and
convection motor are energized.
NOTE: When the convection temperature 40
˚
C is selected, the
convection motor is not energized.
3. The relays RY3 and RY4 are energized (if the cavity
temperature is lower than selected temperature) and the
main supply voltage is applied to the top and bottom heat-
ing elements to return to the selected cooking temperature.
4. Upon completion of the cooking time, the audible signal will
sound, and the oven lamp, turntable motor, cooling fan
motor, convection motor, top and bottom heating elements
are de-energized. At the end of convection cycle, if the cavity
air temperature rise above 120
˚
C, the circuit to the relay RY6
will be maintained (by the thermistor circuit) to continue
operation of the cooling fan motor until temperature drops
below 105
˚
C, at that time the relay RY6 will be de-energized,
turning off the fan motor.
DUAL COOKING CONDITION
MICROWAVE AND CONVECTION (Figure O-5a)
Rotate the COOKING MODE dial to
DUAL 1 setting. And
enter the desired cooking time by rotating the TIME/WEIGHT
dial. And press MICROWAVE POWER LEVEL button to set the
desired microwave power. And press the CONVECTION button
to set the cooking temperature. When the START button is
pressed, the following operations occur:
1. The numbers on the digital readout start the count down to
zero.
2. The oven lamp, cooling fan motor, turntable motor and
convection motor are energized.
3. The relay RY3 will be energized and the main supply voltage
is applied to the top grill heating element.
4. The relay RY4 is energized (if the cavity temperature is lower
than selected temperature) and the main supply voltage is
applied to the bottom heating element.
900W
(HIGH)
32 sec. ON
630W MEDIUM
HIGH
Approx. 70%
100%
24 sec. ON
8 sec. OFF
14 sec. OFF
20 sec. OFF
26 sec. OFF
450W (MEDIUM)
Approx. 50%
18 sec. ON
270W MEDIUM
LOW
Approx. 30%
12 sec. ON
90W
(LOW)
Approx. 10%
6 sec. ON
OPERATION SEQUENCE
