R-8000G
12
The heated air is kept in the oven and force-circulated and
reheated by the top heating element.
SIDE HEATING ELEMENT
The side heating element is located at the left side of the oven
cavity. It is intended to heat air driven by the convection fan. The
heated air is kept in the oven and force-circulated and reheated by
the top heating element.
TURNTABLE MOTOR
The turntable motor rotates the turntable located in the bottom of
the oven cavity, so that the food on the turntable is cooked evenly
during cooking. The turntable may turn in either direction.
FAN MOTOR (MAGNETRON SIDE)
The fan motor drives a blade which draws external cool air. This
cool air is directed through the air vents surrounding the magnetron
and cools the magnetron. This air is channelled through the oven
cavity to remove steam and vapors given off from the heating
foods. It is then exhausted through the exhausting air vents at the
oven cavity.
FAN MOTOR (POWER TRANSFORMER SIDE)
The fan motor drives a blade which draws external cool air. This
cool air is directed through the air vents surrounding the power
transformer and cools the power transformer. This air is chan-
nelled through the oven cavity to remove steam and vapors given
off from the heating foods. It is then exhausted through the
exhausting air vents at the oven cavity.
CONVECTION COOKING SYSTEM
This oven is designed with a hot air heating system where food is not
directly heated by the heating element, but is heated by forced
circulation of the hot air produced by the heating elements. The air
heated by the heating elements is circulated through the convection
passage provided on the outer casing of the oven cavity by means
of the convection fan which is driven by the jet motor. It then enters
the inside of the oven through the vent holes provided on the top and
left sides of the oven. Next, the hot air heats the food on the turntable
and leaves the oven cavity through the vent in the center of the oven
cavity back side wall. Without leaving the oven, this hot air is
reheated by the heating elements, passes through the convection
passage and enters the inside of the oven cavity again, in a
continuing cycle. In this way, the hot air circulates inside the oven
cavity to raise its temperature and, at the same time, comes into
contact with the food being cooked. When the temperature inside the
oven cavity reaches the selected temperature, the heating elements
are de-energized. When the temperature inside the oven cavity
drops below the selected temperature, the heating elements are
energized again. In this way, the inside of the oven cavity is
maintained at approximately the selected temperature. When the
convection time reaches 0, the heating elements are de-energized
and the convection fan stops operating and the oven shuts off.
Flow of hot air:
The rotation direction of the jet motor is controlled by relay RY6.
When the convection fan rotates clockwise, the hot air from the
oven cavity left side wall blows stronger than one from the oven
cavity top wall. ( This mode is called “Convection mode”.) When the
convection fan rotates counterclockwise, the hot air from the oven
cavity top wall blows stronger than one from the oven cavity left
side wall. (This mode is called “JET mode”.)
Figure D-2. Rotation direction of convection fan
Figure D-3. Flow of hot air
Side heating
element unit
Top heating
element unit
Convection
fan
Convection mode
JET
mode
FRONT VIEW
Hot air
Hot air
Hot air
Convection
fan
Hot air
Oven cavity left side
Oven cavity
top wall
Side heating
element unit
Side heating
element unit
Top heating element unit Top heating element unit
Turntable
Convection Mode
JET Mode
