R-24ST/R-2B34 - 25
Figure C-3. Latch Switch Adjustments
Figure C-2. Latch Switches Removal
1. CARRY OUT 3D CHECKS.
2. Disconnect the wire leads from the switches and control
panel.
3. Remove the control panel assembly from the oven
cavity front flange. Referring to chapter "CONTROL
PANEL ASSEMBLY REMOVAL".
4. Remove the two (2) screw holding the latch hook to the
oven flange.
5. Remove the latch hook assembly from the oven flange.
6. To remove the switch.
6-1. With pushing outward on the tab that is holding the
switch, turn the switch so that the post is an axis.
6-2. Pull out the switch from the latch hook. Do not break the
post or tab of the latch hook.
6-3. Now the switch is free.
Re-install
1. Re-install each switch in its place. The monitored latch
switch is in the lower position and the monitor switch is
in the middle position. The stop switch is in the upper
position.
2. Re-connect wire leads to each switch. Refer to chapter
“Pictorial Diagram”.
3. Secure latch hook (with two (2) mounting screws) to
oven flange.
4. Re-install the control panel assembly to the oven cavity
4. Re-install outer case and check for microwave leakage
around the door with an approved microwave survey
meter. (Refer to Microwave Measurement Procedure.)
front flange.
5. Re-connect wire leads to the control unit. Refer to
chapter “Pictorial Diagram”.
6. Make sure that monitor switch is operating properly
and check continuity of the monitor circuit. Refer to
chapter “Test Procedure”, and Adjustment Procedure
below.
1. CARRY OUT 3D CHECKS.
If the monitored latch switch, stop switch and monitor
switch do not operate properly due to a misadjustment,
the following adjustment should be made.
2. Loosen the two (2) screws holding the latch hook to the
flange of the oven front face.
3. With the 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 horizontal position
of the latch hook should be adjusted so that the monitor
switch is activated with the door closed. The vertical
position of the latch hook should be adjusted so that the
stop switch and the monitored latch switch are activated
with the door closed.
4. Secure the screws firmly.
5. Check the operation of all switches. If each switch has
not activated with the door closed, loosen screw and
adjust the latch hook position.
After adjustment, make sure of the following.
1. In and out play of the 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 door
toward the oven face. Both results (play in the door)
should be less than 0.5mm.
2. The monitored latch switch and stop switch interrupt the
circuit before the door can be opened.
3. The monitor switch contacts (COM-NC) close when the
door is opened.
MONITORED LATCH SWITCH, MONITOR SWITCH AND STOP SWITCH ADJUSTMENT
Latch hook
Tab
SW3: Stop switch
SW2: Monitor switch
SW1: Monitored latch switch
Tab
Tab
COMPONENT REPLACEMENT AND ADJUSTMENT PROCEDURE
MONITORED LATCH SWITCH, MONITOR SWITCH AND STOP SWITCH REMOVAL
Latch hook
SW3: Stop switch
Door
SW2: Monitor switch
SW1:Monitored latch switch
Latch heads
