WAVEJET™ SL
MICROWAVE OVEN
COMPONENT MAINTENANCE MANUAL
WITH ILLUSTRATED PARTS LIST
25-30-51
Page
5
December 1, 2003
B.
Overheat Protection
The Wavejet SL Microwave Oven’s Overheat Protection is designed to prevent and
reduce damage from an overheat condition. The overheat protection will deactivate
the microwave oven in the event of an overheat condition or to prevent one from
occurring. There are 3 components to the overheat protection outlined below.
Pressure Switch: The pressure switch is installed in the Wavejet SL microwave oven
for reliability reasons. It is designed to deactivate the microwave at a pressure
altitude of 10,000 feet. Operating at altitudes above 10,000 may result in a
condition where the microwave overheats because the air is thin and the oven
cannot circulate sufficient air to cool itself. If the magnetron overheat thermostat
trips, the oven would have to be removed from the aircraft to have the thermostat
reset. The pressure switch is installed in this application to prevent an overheat
from occurring and avoid unit removal for an overheat due to the environmental
conditions. If the pressure switch fails, the overheat thermostat would trip and
deactivate the microwave oven.
Magnetron Overheat Thermostat: The magnetron overheat thermostat is located on
the Magnetron and will trip if the magnetron exceeds its’ normal operating
temperature. This thermostat will turn the microwave OFF and Err 1 will be
displayed. If the magnetron overheat thermostat does trip, the microwave must be
removed from the aircraft, the outer wrap removed from the microwave, and the
overheat manually reset.
Liner Overheat Thermostat: The liner overheat thermostat is located on the exterior
surface of the stainless steel oven liner and senses the temperature of the inside of
the cooking chamber of the microwave oven. The liner overheat thermostat will
deactivate the microwave oven if the cooking chamber gets too hot and will
automatically reset when the microwave cools. Over cooking food inside of the
microwave could result in this condition.
C.
Installation Requirements
Mounting Hardware: There are 4 nutplates provided in the Wavejet SL for mounting
purposes. The nutplates accept SAE ¼” – 28 mounting bolts. The maximum
mounting bolt depth projection into the Wavejet SL is ½ inch.
Mating Connector: Available from AMP Incorporated (V-00779)
Connector
Connector Sockets (3 Required)
AMP P/N: 1-480701-0
AMP P/N: 350550-6
TIA P/N: 136-0226
TIA P/N: 126-0228