MC4111L / MAG 690
Technische Documentatie
4.3. - The cooling system
The double blower takes the air by an entry located between the panel and the oven door.
This air will cool all the components located in the upper part of the oven, and particularly the electronic
card, but also all the other elements. An exit located under the door is used to expel this air.
The blower, equipped with two turbines, powers two air ventilation systems.
Right turbine
The air forced by the right turbine flows through in
an air duct and cools the magnetron. The air flow
enters in the cavity in order to ventilate it.
The air rises between the top of the cavity and an
intermediate sheet .It is expelled in the oven low
parts, located below the door.
Left turbine
The air forced by the left turbine is aspired and cools the
components of the wave chain, (Transformer, high voltage
diode and capacitor), and the fan heat unit. The air is then
expelled out the oven sides and the bottom to leave below
the door.
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