5-2
1. When mounting Primary switch and Interlock
Monitor switch to Latch Body, consult the figure
below.
2. NOTE: No specific adjustment during installation of
Primary switch and Monitor switch to the latch
body is necessary.
3. When mounting the Latch Body to the oven
assembly, adjust to the Latch Body by moving it so
that the oven door will not have any play. Check for
play in the door by pulling the door assembly. Make
sure that the latch keys move smoothly after
adjustment is completed. Completely tighten the
screws holding the Latch Body to the oven
assembly.
4. Reconnect to Monitor switch and check the
continuity of the monitor circuit and all latch
switches again by following the components test
procedures.
5. Confirm that the gap between the switch housing
and the switch actuator is no more than 0.5mm
when door is closed.
Precaution
For continued protection against radiation hazard, replace parts in accordance with the wiring diagram and be sure to use the
correct part number for the following switches.: Primary and secondary interlock switches and the interlock monitor switch all
together. Then follow the adjustment procedures below. After repair and adjustment, be sure to check the continuity of all
interlock switches and the interlock monitor switch.
Door Open
Door Closed
Primary switch
∞
0
Monitor switch (COM-NC)
0
∞
Monitor switch (COM-NO)
∞
0
Secondary switch
∞
0
Alignment and Adjustments
1. Check continuity of the capacitor with meter set at the highest ohm scale.
2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates 10M
Ω.
3. A shorted capacitor will show continuous continuity.
4. An open capacitor will show constant 10M
Ω.
5. Resistance between each terminal and chassis should read infinite.
Primary Interlock Switch
Lever Door
Body Latch
SECONDARY
Switch
Interlock
Monitor
Switch
5-3 High Voltage Capacitor
5-4 High Voltage Diode
5-5 Adjustment of Primary Switch, Secondary Switch and Monitor Switch
1. Isolate the diode from the circuit by disconnecting its leads.
2. With the ohm-meter set at the highest resistance scale, measure the resistance across the diode
terminals. Reverse the meter leads and read the resistance. A meter with 6V, 9V or higher voltage
batteries should be used to check the front-to back resistance of the diode, otherwise an infinite
resistance may be read in both directions. The resistance of a normal diode will be infinite in one
direction and several hundred K
Ω
in the other direction.
