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26 OVEN SYSTEMS
Interlock Switches
The primary, secondary, and monitor interlock
switches engage and disengage in sequence to ensure
a proper seal. When the door is opened, the switch
sequence is P, S, M. Subsequently, the sequence is
M, S, P when the door is closed.
Adjusting the Door Switches
WARNING: Procedure requires work while
the oven is hot. As a result, exercise extreme
caution when adjusting the door switches.
1. Ensure the oven door is closed.
2. Verify the oven door is not misaligned. If it is,
align it (see procedure on page 24, illustrations
on page 25.
3. If the door is properly aligned, loosen the hex
screws on the switch bracket and slide the
bracket accordingly until each switch is just
engaged. If the bracket is properly positioned,
but the switches are not, slide the switches
until they just engage.
4. Allow the oven to warm up to the set
temperature. If more than one set temperature
is present, select the highest.
5. Once the oven warms to the set temperature,
go to
TEST MODE (page 15).
6. Check the status indicators “P” “S” and “M”
to verify the switches open and close in the
correct sequence: P, S, M when the door is
open and M, S, P when the door is closed.
7. If necessary, repeat steps 3-6.
8. Perform a MW Leak Test (adjacent).
Hinges and Counter-Balance Assembly
The door hinges and counter-balance assembly
work to ensure the door consistently opens and
closes smoothly.
Adjusting the Counter-Balance Assembly
WARNING: Procedure requires work while
the oven is hot. As a result, exercise extreme
caution when adjusting the door switches.
NOTE: In Figure 27, some oven components
have been removed for clarity. The adjustment
procedure MUST be performed with the
counter-balance and hinges installed.
1. Ensure the oven door is closed.
2. Remove both side panels.
3. Remove both switch bracket assemblies (one on
each side of the oven). See Figure 27.
4. Remove the door hinge gussets from each side
of the oven. See Figure 27.
5. On one side of the oven, loosen the screw
as shown in Figure 27.
6. Slide the adjustment spacer (included with
counter-balance assembly kit) under the
counter-balance bracket. The thin side of the
spacer should go between the screw and the
bracket, and the notch should rest against the
side of the bracket. See Figure 27.
7. Tighten the screw against the adjustment spacer
so that the spacer cannot slide out.
8. Loosen the screw just enough to allow the
spacer to slide out.
9. Repeat steps 5-8 for the other side of the oven.
10. Reinstall the door hinge gussets and ensure the
bolts are snug.
11. Reinstall the switch bracket assemblies,
verifying that the levers on the switches are in
the closed position (i.e., snug against the
actuator).
12. Warm up the oven, allowing the additional 8-
minute “soak” to achieve thermal equilibrium in
the cook cavity.
13. If necessary, adjust the oven door by ensuring it
is parallel to the frame. See page 24.
14. Adjust the door switches to ensure the proper
sequence (adjacent).
15. Test for microwave leakage (page 27).