Product Information; Antenna Blade; Blower/Fan Assembly; Grease Shield - Amana CRC21T2 Service Manual

Product Information

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 blown the 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.
!
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.
RS2230003 Rev. 1
DANGER

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.

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 inside oven chassis behind oven
cavity front bulkhead, towards rear of unit in front of
blower motor, underneath insulator.

Stirrer Motor

Stirrer motor rotates top antenna assembly.
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