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TurboChef Technologies, Inc. C Series
9-2
MEASURING FOR MICROWAVE RADIATION LEAKAGE
The following RF emissions test must be
performed every time a service call is done on
a C3 SERIES oven. Report your findings on the
work order.
The following areas must be measured when
performing the RF test.
• Cook Door
• At any place on the outside of the oven (with
all covers in place).
Check for microwave leakage as follows:
1. Remove front bottom trim piece.
2. Place a load in the oven for testing. The load
must meet the following specifications:
A) Load must be 275 ml +/- 15 ml of water.
B) The water should be 77± 5ºF (25± 3ºC).
C) The container must be a low form, 600 ml
beaker with an inside diameter of
approximately 3.35” (8.5cm) and made of
an electrically non–conductive material
such as glass or plastic.
3. Enter the TEST mode. Refer to page 5-3 for
instructions for accessing TEST mode.
4. Position the door leak test tool on the door
handle. See FIGURE 9-1 for correct
positioning of the leak test tool.
5. Tighten the top screw to slowly open the door.
Stop when the control panel indicates that the
door switch has disengaged.
6. Loosen the top screw slowly until the control
panel indicates that the door switch has
engaged.
7. Test for microwave leakage as follows:
This test must be done in conformance with 21
CFR, Chapter 1, Part 1030-Performance
Standard for Microwave and Radio Frequency
Emitting Product. Part 1030.10 Microwave
Ovens. (C) Requirements - (1) Power Density
Limit. “The equivalent plane wave power
density existing in the proximity of the
external oven surface shall not exceed 1
milliwatt per square centimeter at any point
5 cm or more from the external surface of
the oven, measured prior to acquisition by
purchaser, and thereafter, 5 milliwatt per
square centimeter at any point.”
A) The tip of the probe should be touching
the oven surface being measured with the
probe handle perpendicular to the surface.
B) Move the probe counterclockwise around
the perimeter of the door starting from the
upper right corner at a speed of less than
0.5” per second. Be sure to probe entire
door perimeter, returning to the upper right
corner.
8. Exit the diagnostic mode.
9. Repeat STEPS 2 and 7 with the cook door
closed.
WARNING!!
If the unit fails the radiation test, the oven
must be taken out of service immediately
until the defect is corrected. In addition,
the Code of Federal Regulations 21
Subpart C, 1002.20 requires that leakage
readings of over 5 mW/cm
2
MUST be
reported to the manufacturer.
10.
Door Leak Test Too
l
FIGURE 9 - 1 Microwave Leakage Testing