OVEN SYSTEMS
25
Measuring RF Leakage for Microwave Safety
WARNING: Procedure requires work while
the oven and water loads are hot. To avoid burns,
be careful when testing.
An RF (microwave) leakage test must be performed at
the conclusion of the following service tasks:
- Door removal, replacement and/or adjustment
- Wave guide removal and /or replacement
- Magnetron removal and/or replacement
- Door switch adjustment and/or replacement
- Counter-balance assembly adjustment and/or
replacement
WARNING: If the unit fails the microwave
leakage test (leakage greater than 5mW/cm
2
), the
oven must be taken out of service immediately
until the defect is corrected. In addition, the
CDRH Regulation 21 Subpart C, 1002.20
requires that leakage readings of over 5mW/cm
2
must be reported to the manufacturer.
To measure RF leakage,
1. Place the oven in warm up (page 10, steps 1-3)
and allow it to warm to the set temperature
(approximately 15 minutes if the oven starts cold).
2. Once the oven has warmed up, place the oven
in
TEST MODE (see page 16). From TEST MODE,
select “MFG Mode.”
3. From the Manufacturing Mode screen, select
“MW Leak Test” and follow the instructions on
the screen (also detailed in the following steps).
Continued on page 26.
Figure 32: Counter-Balance Adjustment
Step 4
Step 4
Step 7 = Tighten
Step 8 = Loosen Slightly
Step 6: Top of gauge should be flush
against the top of the bracket.
Step 6: Screw fits all the way
into the notch.
3-32”
Step 5
Step 5
NOTE: Oven door and
chassis removed for clarity.
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