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Catalyst
Testing/Troubleshooting
• If the oven is smoking, open the oven door and check the
catalyst at the rear of the oven chamber for food debris
blockage.
• If the oven is smoking as a result of the oven chamber
being cleaned using a caustic cleaner, replace the catalyst.
Replacement Procedure
1. Completely shut down and unplug the oven. Refer to the
"Shutdown" procedure in the OPERATION section.
2. Remove the right side panel. Refer to the "Removing the
Side Panels" procedure in this section.
3. Cut away the insulation from around the catalyst mounting
plate.
4. Remove four (4) 1/4" hex screws that secure the catalyst to
the oven chamber.
5. Carefully pull the catalyst straight out of the oven chamber.
6. Install the new catalyst by reversing the steps above.
Oven
Oven
Chamber
Chamber
OVMISAM-0522
Catalyst
Hex Screw
25
SERVICE PROCEDURES
Waveguide Motor
Testing/Troubleshooting
• Verify that the supply voltage is 208/240 V going into the
motor.
WARNING! Completely shut down and unplug oven
before proceeding. Refer to "Shutdown" procedure.
• Verify all gears are mated together and that all gears are
tightened. The waveguide motors are on only when the
magnetrons are on.
NOTE: The waveguide motors are on only when the magnetrons
are on.
• Verify that the motor spins freely by hand (motor spins
clockwise, when looking down at installed motor). If the
motor is not seized, verify that the antenna moves freely.
Replacement Procedure
1. Completely shut down and unplug the oven. Refer to the
"Shutdown" procedure in the OPERATION section.
2. Remove the top panel. Refer to the "Removing the Top
Panel" procedure in this section.
3. Disconnect the waveguide motor lead wires from the lever
nuts.
4. Remove the two Philips-head motor mounting screws, and
carefully lift the waveguide motor with attached gear up and
out of the oven.
5. Install the new waveguide motor with attached gear by
reversing the steps above.
Gear
Philips Screw
Waveguide
Motor
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