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Whirlpool microwave ovens have a monitoring system designed to assure proper operation of the safety
interlock systems.
The interlock monitor switch will immediately cause the oven fuse to blow if the door is opened and the
primary door interlock switch and/or the secondary interlock switch contacts fail in a closed position.
CAUTION: REPLACE BLOWN FUSE WITH 15 AMPERE CLASS H FUSE ONLY.
Test the upper and lower door interlock switches, cook relay and interlock monitor switch (middle switch)
for proper operation as described in the component test procedures, before replacing the blown oven fuse.
DO NOT ATTEMPT TO REPAIR STICKING CONTACTS OF ANY INTERLOCK SWITCH, SAFETY
SWITCH OR COOK (LATCH) RELAY. REPLACE THE SWITCHES AND RELAY.
Any indication of sticking contacts during component tests requires replacement of that component to
assure reliability of the safety interlock system.
IF THE FUSE IS BLOWN, THE MONITOR, PRIMARY AND SECONDARY INTERLOCK SWITCHES MUST
BE REPLACED. BE SURE THEY ARE PROPERLY CONNECTED.
Precautions to Avoid Possible Exposure
to Excessive Microwave Energy
DO NOT attempt to operate the oven with the door open since open-door operation can result
in harmful exposure to microwave energy. It is important not to defeat or tamper with the safety
interlocks.
DO NOT place any object between the oven front face and the door or allow soil or cleaner
residue to accumulate on sealing surfaces.
DO NOT operate the oven if it is damaged. It is particularly important that the oven door close
properly and that there is no damage to the:
1. Door (bent).
2. Hinges and Latches (broken or loosened).
3. Door Seals and Sealing Surfaces.
DO NOT operate the microwave oven if the door window is broken.
The microwave oven should be checked for microwave leakage by qualified service personnel
after a repair is made.
The oven should not be adjusted or repaired by anyone except properly qualified service
personnel.
DO NOT operate the microwave oven with the outer cabinet removed.