To avoid possible exposure to microwave ra-
diation or energy, visually check the oven for
damage to the door and door seal before
operating the oven. Use your microwave sur-
vey meter to check the amount of leakage
before servicing. In the event that the R.F.
Ieakage exceeds 4 mw/cm
ate repair must be made before continuing to
service the unit. Check interlock function by
operating the door latch. The oven cook cycle
should cut off before the door can be opened.
The door and latching assembly contains the
radio frequency energy within the oven. The
door is protected by three safety interlock
switches. Do not attempt to defeat them. Un-
der no circumstances should you try to oper-
ate the oven with the door open.
PRECAUTIONS TO BE OBSERVED BEFORE AND DUR-
ING SERVICING TO AVOID POSSIBLE EXPOSURE TO
EXCESSIVE MICROWAVE ENERGY.
Do not operate or allow the oven to be
operated with the door open.
Make the following safety checks on all
ovens to be serviced before activating the
magnetron or other microwave source,
and make repairs as necessary:
a) Interlock Operation.
b) Proper Door Closing.
c) Seal and Sealing Surfaces (Arcing,
Wear, and Other Damage).
d) Damage to or Loosening of Hinges and
e) Evidence of Dropping or Abuse.
Before turning on microwave power for
any service test or inspection within the
microwave generating compartments,
WARNING TO SERVICE TECHNICIANS
at 5 cm, appropri-
• Proper operation of the microwave ovens
requires that the magnetron be properly
assembled to the waveguide and cavity.
Never operate the magnetron unless it is
• Be sure the "RF" seal is not damaged, and
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 the test
procedures and safety information contained
in this manual.
check the magnetron, wave guide or trans-
mission line, and cavity for proper align-
ment, integrity, and connections.
Any defective or misadjusted components
in the interlock, monitor, door seal, and
microwave generation and transmission
systems shall be repaired, replaced, or
adjusted by procedures described in this
manual before the oven is released to the
A microwave leakage check to verify com-
pliance with the Federal performance
standard should be performed on each
oven prior to release to the owner.
Do not attempt to operate the oven if the
door glass is broken.