Amana Commercial Service Manual download pdf (Page 8)

RS2240002 Rev. 1 8

Antenna Blade

Distributes microwave energy throughout the cavity.

Blower/Fan Assembly

Circulates cooling air throughout the microwave oven

compartment and cavity.

Grease Shield

Covers and protects the antenna blade assembly.

Door Interlock and Monitoring Switch

NOTE: When the line fuse is open, Interlock Switch

Assembly must be replaced.

Interlock switch assembly mounts behind oven cavity

front bulkhead. Switches are actuated by the door

hooks.

Monitoring switch (contacts COM and NC) is actuated by

the top door hook.

The primary interlock switch (contacts COM and NO) is

actuated by the top door hook.

The logic switch (contacts COM and NO) is actuated by

the bottom door hook.

The secondary interlock switch (contacts COM and NO)

is actuated by the bottom door hook.

If a malfunction occurs in the primary interlock when door

opens, current will flow through the monitor switch

causing the oven fuse to open.

If a faulty door interlock switch has allowed current

through the monitor switch, the switch assembly must be

replaced (see interlock switch testing) before replacing

fuse.

DANGER

To avoid severe personal injury or death avoid

contacting any high voltage parts. The capacitors are

at high voltage (4000 volt) potential and it is extremely

important that they be grounded before handling.

Auto Transformer

Auto transformer in this unit provides a voltage of 120,

208, or 230 VAC.

Transformer High Voltage

High voltage transformer is used in this unit, which

supplies high voltage A.C. for operation of the magnetron

tube.

High Voltage Capacitor

Doubles the A.C. output voltage from the high voltage

transformer.

High Voltage Diode (Rectifier)

Is connected at the output side of the high voltage

capacitor. It changes voltage from A.C. to D.C. It passes

current in one direction and blocks it in the other. Also

called a rectifier.

Magnetron

With filament voltage and high D.C. voltage from the

output of the H.V. capacitor/diode junction, the

magnetron will put out an electomagnetic radio frequency

of 2450 MHz to heat the food load in the oven.

Thermal Cutout Protectors

At a predetermined temperature, the thermal cut-outs will

open.

• Magnetron thermal cut-outs are mounted directly on

the body of the magnetron.

• Cavity thermal cut-out is mounted directly on the left

side of cavity exterior, inside the exhaust duct.

Touch Panels

Allows consumer operation and programming of oven.

Triac

Triac is controlled by control board. Triac controls one

side of the power line going to the high voltage power

transformer.

• Triac is mounted on blower bracket.

Antenna Motor(s)

Antenna motor(s) rotate(s) antenna assemblies.

Product Information

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Amana Commercial Service Manual Page 8

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