AVM 930 -MW F1
DESCRIPTION AND FUNCTION OF COMPONENTS
Interference filter (1030)
Is intended to avoid interference with radio or TV Set during operation.
Cook led (1090)
This led indicates to the user when the oven is in the cooking cycle. When the cycle is finished the light goes off.
Fan motor (1070)
The fan motor drives a blower fan which draws cooling air through the ventilation opening on the right hand side forcing it
around the magnetron end transformer. Same air is also forced info the cavity to make the antenne rotate end to remove
steam end vapours given off by the cooking food, end then out through the ventilation openings situated on the lett hand
side.
.Cavity tamp (1120)"";:
r The cavity lamp illuminates the inferior of the cavity so the food can be seen through the door window. The cavity lamps
lights anytime cooking time is set.
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I. High voltage transformer (5000)
;- Purpose of HV transformer is to provide filament voltage tor heating the magnetron filament as weil as to produce high
voltage used tor magnetron tube operation.
During a "cook" cycle, the 220 V (240 V) ac applied to the primary winding is converted info approximately 3.3 V ac on
filament winding, and in to approximately 2300 V ac on the high voltage secondary winding of the power transformer.
Half wave voltage doubler circ~it (2000)
The halfwave voltage doublercircuit consists of a rectifier and a capacitorwith bleeding resistor. Purpose ofthis group is
to convert the 2300 V ac coming tram the secondary winding of high voltage transformer in to approximately 4000 Volts
d.c. needed tor magnetron operation.
Magnetron tube (1010)
Magnetron produces microwaves through the interaction of strang electric end magnetic fjelds. These microwaves are
guided into the oven cavity and evenly spread in the cavity by the rotating antenne producing the desired heat in the food.
Failure monitor switch (1150)
This is a normally open switch, which is clo$ed when the door is opened. Should then tor any reason the door switches
1055 or 1060 remain closed, the fuge 1002 will blow due to short-circuit. The short-circuit current is limited by resistor
3102.
Door switches (1040, 1140)
.These switches are safety switches operated by the door. The switch 1040 interrupts the current to the electronic control
.and display panel.
{ Switch 1040 is the primary door switch end 1140 the secondary door switch.
Note:
Defective switches should be destroyed to prevent possible future use.
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Ed. 01 -May 91
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ACEC
WHIRLPOOL
