MC4111L / MAG 690
Technische Documentatie
4.4.2. - Shutter position in Combined or Traditional mode
In Combined or Traditional mode, the shutter is
open (up position), the air arriving from the right-
hand turbine ventilates the magnetron and then
is deflected towards an opening located near the
magnetron. The air flow circulates then between
the intermediate sheet metal and the cavity top,
goes out on the sides of the oven and is
expelled underneath the door.
The thermal activator ( or actuator) is
energized (Actuated).
In Combined or Traditional cooking mode, the shutter is open, the first part of which prevents the cavity hot
air from being sucked by the air flow circulating around the cavity. The second part of the shutter prevents
the fresh air from entering the cavity, while ensuring the magnetron ventilation, necessary in combined
mode.
4.4.3. - The door ventilation
The MOBI oven door is ventilated in order to obtain
the lowest temperature on the door (55°C where as
the limit value imposed by the standard is 70°C).
The principle consists of making air circulate inside
the door to reduce thermal exchange. The door is
equipped with two openings, one at the top and
the other at the bottom. While functioning, the
turbine creates a depression which makes the cold
air penetrate through an entry located at the bottom
of the door. The aspired cold air goes up along the
panes inside the door thus cooling the whole unit.
The hot air goes out through the lower part of the
oven; a deflector at the bottom of the door directs
the flow downwards to prevent the hot air from
being expelled toward the user .
The three panes of the door reduce the infra-red
radiation.
To Next Page
