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R-82FBSTM - 4

Power Requirements

230 - 240 Volts / 50 Hertz / Single phase, 3 wire earthed

Power Consumption

Microwave cooking

1.50 kW  Approx. 6.5 A

Convection cooking

1.91 kW  Approx. 8.0 A

Top Grill mode ...................... 1.25 kW

Approx. 5.2 A

Grill cooking

Bottom Grill mode ................. 0.70 kW

Approx. 2.9 A

Top and Bottom  mode ......... 1.90 kW

Approx. 7.9 A

Micro and Top Grill ............... 2.70 kW

Approx. 11.5 A

Dual cooking Micro and Bottom Grill .......... 2.15 kW

Approx. 9.2 A

Micro and Convection ........... 2.16 kW

Approx. 9.3 A

Power Output

900 W nominal of RF microwave energy (measured by method of IEC 60705)
Operating fequency 2450 MHz

Top Grill  heating element Power Output

1200 W

Bottom heating element Power Output

650 W

Case Dimensions

Width 520 mm

Height 309 mm (including foot)

Depth 482 mm

Cooking Cavity Dimensions

Width  353 mm

Height 207 mm

Depth 357 mm

Turntable diameter

325 mm

Control Complement

Twin Jog Control System

Clock (1:00 - 12:59) / Timer (0 - 99 minutes 90 sec.)

Microwave Power for Variable Cooking

 Repetition Rate;
100 (HIGH) ....................... Full power throughout the cooking time
70 (MEDIUM HIGH) .........................  approx. 70% of FULL Power
50 (MEDIUM) ...................................  approx. 50% of FULL Power
30 (MEDIUM LOW) ..........................  approx. 30% of FULL Power
10 (LOW) .........................................  approx. 10% of FULL Power

Convection temperature control range:

   250˚C, 230˚C, 220˚C, 200˚C, 180˚C, 160˚C, 130˚C, 100˚C, 70˚C and 40˚C

LESS/MORE buttons, INFO button, AUTO COOK button, PIZZA button,
AUTO DEFOST button, POWER LEVEL button, CONV. (˚C) button,
STOP/CLEAR button, KITCHEN TIMER/CLOCK SET button, 

+

 1min /

START button.

Net Weight

Approx. 19 kg

THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE:

GREEN-AND-YELLOW

: EARTH

BLUE

: NEUTRAL

BROWN

: LIVE

R-82FBSTM - 5

OVEN
1. Control panel
2. Oven lamp
3. Waveguide cover
4. Bottom grill heating ele-

ment (Bottom Grill)

5. Turntable motor shaft
6. Oven cavity
7. Door seals and sealing

surfaces

8. Door latches
9. Door opening handle
10.Top grill heating element

(Top Grill)

11.Fixing points (4 points)
12.Ventilation openings
13.Outer cabinet
14.Powercord
15.Turntable tray
16.High rack
17.Low rack

NOTE: If the clock has been set, some one-touch cooking features such as "AUTO MINUTE" are disabled after three

minutes when the oven is not used. These features are automatically enabled when the door is opened and closed
or the STOP button is pressed.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

1

2

3

4
5
6

7

8

9

10

11

12

13

1. DIGITAL DISPLAY
2. INFO button
3. LESS/MORE button
4. AUTO DEFROST button
5. PIZZA button
6. AUTO COOK button
7. COOKING MODE dial
8. CONVECTION (°C) button
9. MICROWAVE POWER LEVEL button
10.TIME/WEIGHT dial
11.START    +1min button
12.CLOCK button
13.STOP button

R-82FBSTM - 6

Closing the door activates the monitored latch switch and
the stop switch.

1. The control unit is not energized. The display shows

nothing (Fig. O-1 (a)).

2. Open the door. The contacts (COM-NC) of the moni-

tored latch switch are closed and the control unit is
energized. Then contacts of relays RY1 and RY5 are
closed, and the oven lamp will light and the display will
show "ENERGY SAVE MODE TO CANCEL ENERGY
SAVE MODE SET THE CLOCK" (Fig. O-1(b)).

3. Close the door. The contacts (COM-NC) of the moni-

tored latch switch are opened and the contacts of relay
RY1 are opened and the oven lamp will be turned off.
The display will show "  .  

0". (Fig. O-1(c)).

NOTE: Energy save mode
1. If the oven has not been used for more than 3 minutes,

the contacts of the relay RY5 will be opened and the
control unit will not be energized. Open and close the
door, the control unit will resume.

2. If the clock is set, this energy save mode does not work.

Rotate the COOKING MODE dial to the 

 micro setting.  Press

the MICROWAVE POWER LEVEL button once.  Enter the
cooking time by rotating the TIME/WEIGHT dial.  Start the oven
by pressing START button.

CONNECTED COMPONENTS

RELAY

Oven lamp, Turntable motor

RY1

High voltage transformer

RY2

Fan motor

RY6

1. The line voltage is supplied to the primary winding of

the high voltage transformer. The voltage is converted
to about 3.3 volts A.C. output on the filament winding
and high voltage of approximately 2000 volts A.C. on
the secondary winding.

2. The filament winding voltage (3.3 volts) heats the

magnetron filament and the high voltage (2000 volts) is
sent to the voltage doubling circuit, where it is doubled to
negative voltage of approximately 4000 volts D.C..

3. The 2450 MHz microwave energy produced in the

magnetron generates a wavelength of 12.24 cm. This
energy is channelled through the waveguide (trans-
port channel) into the oven cavity, where the food is
placed to be cooked.

4. When the cooking time is up, a signal tone is heard and

the relays RY1 + RY2 + RY6 go back to their home
position. The circuits to the oven lamp, high voltage
transformer, fan motor and turntable motor are cut off.

5. When the oven door is opened during a cooking cycle,

the switches come to the following condition.

Switch

Contact

          Condition
During

Oven Door

Cooking

Open(No cooking)

COM-NO

Closed

Opened

Monitored latch switch

COM-NC

Opened

Closed

Stop switch

COM-NO

Closed

Opened

COM-NO

Closed

Opened

Monitor Switch

COM-NC

Opened

Closed

The circuit to the high voltage transformer is cut off when
the contacts of relay RY2, and the contacts (COM-NO) of
the monitored latch switch and monitor switch are made
open. The circuit to the fan motor is cut off when the relay
RY6 is made open. The circuit to the turntable motor is cut
off when the contacts (COM-NO) of the monitored latch
switch are made open. The relays RY2 and RY6 are made
open when the door is opened. The oven lamp remains on
even if the oven door is opened after the cooking cycle has
been interrupted, because the relay RY1  stays closed.
Shown in the display is remaining time.
6. MONITOR SWITCH CIRCUIT

The monitor switch is mechanically controlled by the
oven door, and monitors the operation of the moni-
tored latch switch.

6-1. When the oven door is opened during or after the

cycle of a cooking program, the monitored latch
switch and stop switch must open their contacts
(COM-NO) first. After that the contacts (COM-NC) of
the monitor switch and monitored latch can be closed.

6-2. When the oven door is closed, the contacts (COM-

NC) of the monitor switch SW3 must be opened and
the contacts (COM-NO) of monitor switch must be
closed. After that the contacts (COM-NO)  of the
monitored latch switch and the stop switch are made
closed, and the contacts (COM-NC) of the monitored
latch switch are made open.

6-3. When the oven door is opened and the contacts

(COM-NO) of  the monitored latch switch remain
closed, the fuse F8A will blow. Because the relay RY1
and monitor switch are closed  and a short circuit is
caused.

When the microwave oven is preset for variable cooking
power, the line voltage is supplied to the high voltage
transformer intermittently within a 32-second time base
through the relay contact which is coupled with the cur-
rent-limiting relay RY2. The following levels of microwave
power are given.

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.

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

R-82FBSTM - 7

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. 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.

In this condition the food is cooked by bottom grill heating
element energy. Rotate the COOKING MODE dial to 

 BOT-

TOM GRILL setting. 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.

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. 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.

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.

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
be cooked in the oven. Rotate the COOKING MODE dial to the

 convection setting and enter the cooking time by rotating the

TIME/WEIGHT dial.  Select the desired cooking temperature 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 rises 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.

Rotate the COOKING MODE dial to 

 DUAL 1 setting.  Enter

the desired cooking time by rotating the TIME/WEIGHT dial.
Press MICROWAVE POWER LEVEL button to set the desired
microwave power.  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.

5. The relay RY2 is energized and the microwave energy is

generated by magnetron.

6. Now, the food is cooked by microwave and convection

energy simultaneously.

Rotate the COOKING MODE dial to 

 DUAL 2 setting, and

enter the desired cooking time by rotating the TIME/WEIGHT
dial. Press MICROWAVE POWER LEVEL button to set the
desired microwave power. 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.