R-25JT-F
10
OVEN THERMISTOR (2)
This thermistor detects temperature of the oven cavity bottom
plate. The thermistor is a negative temperature coefficient type.
The temperature is detected through the resistance of the
thermistor.
If the temperature is high, the control will display “EE17” and the
oven will stop.
MAGNETRON THERMISTOR
The thermistor is a negative temperature coefficient type. The
air temperature around the upper magnetron is detected through
the resistance of the thermistor.
If the temperature is high, the control panel will display "EE17"
and the oven will stop to protect the lower magnetron against
overheat.
If the oven thermistor (2) and the magnetron thermistor are
open at the same time, the control panel will display "EE16" and
the oven will stop.
BLOWER MOTOR
The blower motor drives a blade which draws external cool air
into the oven. This cool air is directed through the air vanes
surrounding the magnetrons and cools the magnetrons. This
air is channelled through the oven cavity to remove steam and
vapours given off from the heating foods. It is then exhausted
through the exhausting air vents at the oven cavity.
STIRRER MOTORS
The upper and lower stirrer motors drive stirrer antennas to stir
the microwave radiation from the upper and lower waveguides.
OVEN LAMPS
The oven cavity light illuminates the interior of the oven so that
food being cooked can be examined visually through the door
window without having to open the door. The oven lamp is on
during the cooking cycle and idle condition.
SELECT SWITCHES (1) - (3)
The select switch assembly is an array of three separate
switches which may be configured for either 208V or 230V
operation (see General Information section, voltage select).
These switches are connected to the windings of components
specified in the table below and make those components
compatible with the specified line voltage by changing their
internal windings. For 208V operation contacts (Normal Open)
of the all switches are open.
SELECT SWITCH AND ELECTRICAL COMPONENTS
CONDITION
SWITCH NO.
ELECTRICAL PARTS
(1)
Touch control unit
(2)
Power transformer (1) (Front side)
(3)
Power transformer (2) (Rear side)
Oven in the 208V setting: contacts between common and
normally open are closed.
Oven in the 230V setting: contacts between common and
normally closed are closed.
NOISE FILTER
The noise filter prevents the radio frequency interference that
might flow back in the power circuit.
Select switch (1)
Select
switch (2)
Select switch (3)
COM.
N.C.
N.O
Select switch angle
Switch
spacer
Screw
Oven
cavity
Rear
cabinet
side
