30
R-7H55
1ST. LATCH SWITCH, 2ND. LATCH SWITCH,STOP SWITCH AND MONITOR SWITCH ADJUSTMENT
If the 1st. latch switch, 2nd. latch switch and monitor switch
do not operate properly due to a misadjustment, the follow-
ing adjustment should be made.
1. Loosen the two (2) screws holding latch hook to the oven
cavity front flange.
2. With door closed, adjust latch hook by moving it back and
forth, and up and down. In and out play of the door
allowed by the upper and lower position of the latch hook
should be less than 0.5mm. The vertical position of the
latch hook should be adjusted so that the 1st. latch
switch and 2nd. latch switch are activated with the door
closed.
3. Secure the screws with washers firmly.
4. Check the 2nd. latch switch operation. If the 2nd. latch
switch has not activated with the door closed, loosen
screw and adjust the latch hook position.
After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when in
the latched position. First check upper position of latch
hook, pushing and pulling upper portion of door toward
the oven face. Then check lower portion of the latch
hook, pushing and pulling lower portion of the door
toward the oven face. Both results(play in the door)
LATCH
HEADS
LATCH HOOK
2ND. LATCH
SWITCH
MONITOR
SWITCH
SWITCH
LEVER
STOP SWITCH
1ST. LATCH
SWITCH
should be less than 0.5mm.
2. The 2nd. latch switch and stop switch interrupt the circuit
before the door can be opened.
3. Monitor switch contacts close when door is opened.
4. Re-install outer case and check for microwave leakage
around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.)
Figure C-3. Latch Switch Adjustments
REMOVAL
1. Disconnect oven from power supply and remove turntable
tray and turntable support from oven cavity.
2. Remove the outer case cabinet, refer to "OUTER CASE
CABINET REMOVAL".
3. Remove two (2) screws from upper oven hinge.
4. Push the open button and open the door slightly.
5. Release the upper oven hinge from upper door hinge pin
by pulling down the door.
6. Release the lower door hinge pin from the lower oven
hinge by pulling up the door.
7. Now the door assembly is free.
Note: When the individual parts are replaced, refer to
"Door Disassembly".;
RE-INSTALL
1. On re-installing door, insert the lower door hinge pin into
the lower oven hinge.
2. Insert the upper oven hinge to square opening in the
upper right side of the oven cavity face plate. (from rear)
3. Insert the upper oven hinge into the upper door hinge pin.
4. Shut the door
5. Make sure the door is parallel with oven face lines (left
and upper side lines) and door latch heads pass through
latch holes correctly.
6. Secure two (2) screws holding the upper oven hinge to
the top of the oven cavity.
Note: After any service to the door;
(A) Make sure that door sensing switch and secondary
interlock switch are operating properly. (Refer to
chapter "Test Procedures".).
(B) An approved microwave survey meter should be
used to assure compliance with proper microwave
radiation emission limitation standards.
DOOR ADJUSTMENT
The door can be adjusted by keeping screws of each hinge
loose. Lower oven hinge can be loosened with special
screw driver (LHSTIX "LR-4").
Note:
Lower oven hinge is secured by special (LH) screw.
When securing or loosening screw, LHSTIX (LR-4)
type screw driver should be used.
LHSTIX SCREW DRIVER
(SIZE LR-4)
LHSTIX SCREW
LHSTIX screw Driver and LHSTIX Screw
After adjustment, make sure of the following :
1. Door latch heads smoothly catch latch hook through
latch holes and that latch head goes through center of
latch hole.
DOOR REPLACEMENT AND ADJUSTMENT
Summary of Contents for R-7H55
Page 2: ...R 7H55 ...
