16
R-22GV
R-22GT
R-23GT
R-24GT
TEST PROCEDURES (CONT'D)
COMPONENT TEST
PROCEDURE
LETTER
SCREW DRIVER
MONITOR SWITCH (2)
OHMMETER
MONITOR SWITCH (1)
LATCH HOOK
Magnetron (1) Failure:
Test magnetron (1) and Blower fan motor.
Magnetron (1), (2) Failure: Test magnetron (1), (2).
Check blower fan motor and ventilation opening.
Magnetron (2) Failure:
Test magnetron (2) and Blower fan motor.
Check blower fan motor and ventilation opening or
rocked rotating of blower fan motor.
Food has been burned in oven.
Temperature of oven inside is very high.
A continuity check across the thermal cut-out terminals should indicate a closed circuit unless the
temperature of the thermal cut-out reaches specified temperature. The thermal cut-out reset automati-
cally at specific temperature.
Open
Close
Display or
temperature
temperature
Condition
Check point
Blower motor ther-
mal cut-out
Oven thermal cut-
out
Magnetron thermal
cut-out (2)
Magnetron thermal
cut-out (1)
145˚C
115˚C
115˚C
Non resetable
type
EE1
EE3
EE2
Oven shut
off
Oven shut
off
Non resetable
type
Non resetable
type
H
SELECT SWITCHES (1) (4) TEST (FOR R-23GT, R-24GT)
Isolate switch and check the contacts by using an ohmmeter with following table. If improper operation
is indicated, make the necessary switch adjustment or replacement.
Table: Switch Connection
Plunger operation
Between COM. and NO.
Between COM. and NC.
COM.: Common terminal
Plunger released
Open circuit
Close circuit
NO.:
Normal Open terminal
Plunger operation
Close circuit
Open circuit
NC.:
Normal Close terminal
SELECT SWITCH (1)
COM.
SELECT
SWITCH (2)
N.C.
N.O
SELECT SWITCH ANGLE
SELECT SWITCH (3)
SCREW
SELECT SWITCH (4)
Oven
cavity
Rear
cabinet
side
I
BLOWN MONITOR FUSE
If the monitor fuse is blown when the door is opened, check the primary interlock relay (1), (2), secondary
interlock switches (1), (2), door sensing switch and monitor switches (1), (2) according to the "TEST
PROCEDURE" for those switches before replacing the blown monitor fuse.
CAUTION: BEFORE REPLACING A BLOWN MONITOR FUSE, TEST THE PRIMARY INTERLOCK
RELAYS, SECONDARY INTERLOCK SWITCHES, DOOR SENSING SWITCH AND MONI-
TOR SWITCHES FOR PROPER OPERATION.
If the monitor fuse is blown by improper switch operation, the monitor fuse and switch must be replaced
with "monitor fuse and switch assembly" part number FFS-BA012WRK0 (for R-22GV/GT) or FFS-
BA015WRK0 (for R-23GT/24GT), even if the monitor switch operates normally. The monitor fuse and
switch assembly is comprised of a 20 ampere fuse and switch.
J
THERMAL CUT-OUTS