Important Information For Service Technicians - Jenn-Air JMD2124WS Technical Education

IMPORTANT INFORMATION FOR SERVICE TECHNICIANS

To avoid possible exposure to microwave
radiation or energy, visually check the oven
for damage to the drawer and drawer seal
before operating any oven. Use a microwave
survey meter to check the amount of leakage
before servicing. In the event the R.F. Ieakage
exceeds 4 mw/cm at 5 cm, appropriate repair
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must be made before continuing to service the
unit. Check interlock function by operating the
drawer latch. The oven cook cycle should cut
off before the drawer can be opened.
The drawer and latching assembly contains the
radio frequency energy within the oven. The
drawer is protected by three safety interlock
switches. Do not attempt to defeat them.
Under no circumstances should you try to
operate the oven with the drawer open.
• Proper operation of microwave ovens
requires that the magnetron be properly
assembled to the waveguide and cavity.
Never operate the magnetron unless it is
properly installed.
• Be sure the "RF" seal is not damaged and
is assembled around the magnetron dome
properly when installing the magnetron.
• Routine service safety procedures should
be exercised at all times.
• Untrained personnel should not attempt
service without a thorough review of test
procedures and safety information con-
tained in this Job Aid.
Jenn-Air microwave ovens have a monitoring
system designed to assure proper operation
of the safety interlock systems.
The monitor switch will immediately cause the
oven fuse to blow if the drawer is opened and
the primary door interlock switch and/or the
secondary interlock switch contacts fail in a
closed position.
NOTE: Replace a blown fuse with a 20 am-
pere class H fuse only.
Test the upper and lower door interlock switch-
es, cook relay, and 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. The components must
be replaced.
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 switch,
and the Primary, and Secondary interlock
switches must be replaced. Be sure they
are properly connected.
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