R969(W)
5 – 2
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.
[3] GRILL COOKING CONDITION
1. TOP GRILL (Figure O-3)
In this condition the food is cooked by the grill heating element. Pro-
gramme the desired cooking time by touching the TIME keys and
touch the GRILL key once. When the + 1min key is touched, the fol-
lowing 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 ener-
gized.
3. The relay RY3
is energized and the main supply voltage is applied
to the top grill heating elements.
4. Now, the food is cooked by the top grill heating elements.
NOTE: The convection cooking condition will be carried out simulta-
neously until the temperature of the oven cavity rise to 220°C.
[4] CONVECTION COOKING CONDITION
1. PRE-HEATING (by 40°C - 130°C)
Programme the desired convection temperature of 40°C - 130°C by
touching CONVECTION key. When the + 1min key is touched, the
following operations occur:
1. The relays RY1, RY6
and RY7 are energized, the oven lamp, turn-
table motor, fan motor and convection motor are turned on.
2. The relay RY4
is energized and the main supply voltage is applied
to the convection heating element.
3. After the temperature of oven cavity rises to the selected one, the
oven will continue to turned the convection heating element on and
off to maintain the temperature for 30 minutes.:
2. PRE-HEATING (by 160°C - 250°C)
Programme the desired convection temperature of 160°C - 250°C by
touching CONVECTION key. When the + 1min key is touched, the
following operations occur:
1. The relays RY1, RY6
and RY7 are energized, the oven lamp, turn-
table motor, fan motor and convection motor are turned on.
2. The relay RY4
and RY3 are is energized and the main supply volt-
age is applied to the convection heating element and the grill heat-
ing elements.
3. After the temperature of oven cavity rises to the selected one, the
oven will continue to turned the convection heating element on and
off to maintain the temperature for 30 minutes. And simultaneously
the grill heating element will be operated at 10% power output.
3. CONVECTION COOKING (by 250°C)
Programme the cooking time by touching TIME keys. And then pro-
gramme the convection temperature of 250°C by touching CONVEC-
TION key. When the + 1min key is touched, the following operations
occur:
1. The relays RY1, RY6
and RY7 are energized, the oven lamp, turn-
table motor, fan motor and convection motor are turned on.
2. The relay RY4
and RY3 are energized and the main supply voltage
is applied to the convection heating element and the grill heating
elements.
3. The oven will continue to turn the convection heating element on
and off to maintain the temperature for the programmed cooking
time. And simultaneously the grill heating elements will be operated
at 10% power output.
4. CONVECTION COOKING (by 40°C - 230°C)
Programme the cooking time by touching TIME keys. And then pro-
gramme the desired convection temperature of 40°C 230°C by touch-
ing CONVECTION key. When the + 1min key is touched, the
following operations occur:
1. The relays RY1, RY6
and RY7 are energized, the oven lamp, turn-
table motor, fan motor and convection motor are turned on.
2. The relay RY4
is energized and the main supply voltage is applied
to the convection heating element.
3. The oven will continue to turn the convection heating element on
and off to maintain the temperature for the programmed cooking
time.
[5] DUAL COOKING CONDITION
1. MICROWAVE AND CONVECTION (Figure O-5a)
Programme the desired cooking time by touching the TIME keys.
Touch the DUAL MODE key once. Select the microwave power level
by touching the MICROWAVE POWER LEVEL key. And select the
convection temperature by touching the CONVECTION key.
NOTE: The 100% microwave power level can not be selected.
When the + 1min key is touched, the following operations occur:
1. The numbers on the digital read-out start the count down to zero.
2. The oven lamp, fan motor, turntable motor and convection motor
are energized.
3. The relay RY4
will be energized and the main supply voltage is
applied to the convection heating element.
4. The relay RY2
is energized and the microwave energy is generated
by magnetron.
5. Now, the food is cooked by microwave and convection energy
simultaneously.
2. MICROWAVE AND TOP GRILL (Figure O-5b)
Programme the desired cooking time by touching the TIME keys.
Touch the DUAL MODE key twice. Select the microwave power level
by touching the MICROWAVE POWER LEVEL key. When the +
1min key is touched, the following operations occur:
1. The numbers on the digital read-out start the count down to zero.
2. The oven lamp, fan motor and turntable motor are energized.
3. The relay RY3
is energized and the main supply voltage is applied
to the grill heating elements.
4. The relay RY2
is energized and the microwave energy is generated
by magnetron.
5. Now, the food is cooked by microwave and grill simultaneously.
[6] ON/OFF TIME RATIO
In dual cooking, the magnetron operate within a 48 second time base.
The following table is the ON / OFF time ratio at each power output of
the magnetron.
POWER OUTPUT ON TIME OFF TIME
100% 48 sec. 0 sec.
70% 36 sec. 12 sec.
50% 26 sec. 22 sec.
30% 16 sec. 32 sec.
10% 8 sec. 40 sec.
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