R-22JT
7
TWO MAGNETRON OPERATION SYSTEM
Two magnetrons (1), (2) are equipped in order to get higher
microwave power output. The primary windings of the
power transformers (1), (2) are connected so that each
magnetron can be oscillated alternatively according to the
frequency of the power supply. Refer to the Figure B-1.
Figure B-1. Operation of Magnetron
Figure O-1. Oven Schematic-OFF Condition
SCHEMATIC
NOTE: CONDITION OF OVEN
1.
DOOR CLOSED OR 1 MINUTE AFTER COOK OFF
2.
" . " APPEARS ON DISPLAY
COMMERCIAL
FREQUENCY
(60HZ)
POWER OUTPUT
BY MAGNETRON 1
POWER OUTPUT
BY MAGNETRON 2
OPERATION OF
MAGNETRON
SECONDARY
INTERLOCK
SWITCHES
DOOR
SENSING
SWITCHES
POWER
TRANSFORMER(1)
POWER
TRANSFORMER(2)
CAPACITOR (1)
AC 2100V
AC 2100V
CAPACITOR (2)
BLU
BLU
BLK
WHT
A1
RY-1
RY-3
RY-2
A7
A7
A3
GRN
B2
B1
H3
H1
B3
RED
RED
RED
RED
RED
BRN
BRN
WHT
WHT
WHT
WHT
WHT
WHT
WHT
WHT
H.V. RECTIFIER (1)
H.V. RECTIFIER (2)
MAGNETRON
(1
)
MAGNETRON
(2
)
MAGNETRON THERMISTOR
OVEN THERMISTOR
BLK
BLK
BLK
BLK
BLK
BLK
YEL
TAB1
TAB2
PRIMARY
INTERLOCK
RELAY (1)
FUSE
MONITOR SWITCHES
MAG.NETRON TEMP. FUSE (2)
OVEN TEMP. FUSE
MAG.NETRON TEMP.
FUSE (1)
20A
NOISE
FILTER
120V
60 Hz
PRIMARY
INTERLOCK
RELAY (2)