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PROCEDURE FOR MICROWAVE LEAKAGE TEST (1)
Check for radiation leakage after servicing. Should the leakage be more than 4mW/cm² Inform
Garland service centre immediately. After repairing or replacing any radiation safety device, keep
a written record for future reference, as required by D.H.H.S. and Health and Welfare Canada
regulation.
This requirement must be strictly observed. In addition, the leakage reading must be recorded on
the service repair documentation while in the customer's premises.
DO NOT attempt to carry out the following procedure
Tools required for microwave leakage test
600ml glass beaker
Supply of cold water
Microwave leakage meter
Read and understand all of these notes and procedure before carrying out this operation.
Note before measuring.
•
Make sure that the survey meter you are using has been calibrated and is suitable for
measuring frequencies of 2,450 MHz.
•
Do not exceed meter full scale deflection, leakage meter should initially be set to the highest
scale, then adjusted down as necessary to ensure that low readings are measured on the most
sensitive range.
•
To prevent false readings, hold the probe on the grip provided and move along the areas
indicated on the following page. The probe should be moved at 1 inch/second (2.5cm).
•
With any casework removed the leakage should not exceed 4mW/cm².
•
When measuring the leakage, always hold the probe at 2" (50mm) from the test area using the
probe supplied with the instrument.
•
Always hold the probe at right angles to the oven and point of measurement.
Procedure
1)
Place 275ml of cold water in the 600ml glass beaker.
2)
Place the 600ml glass beaker in the centre of oven.
3)
Close the door and set time for 30 seconds then press Power pad 100%
(change water every 30 seconds to prevent boiling).
Tim Hortons: In ENGINEERING MODE (see Appendix 1 ) press Pad 01 then any Load pad
(QUARTER, HALF, FULL) watch time display and open door at 30 seconds.
4)
Set the leakage meter to the appropriate scale/range.
5)
Move the survey meter probe along the areas indicated in (Figures 1 to 4 page 23).
6)
Remember to change the water after 30 second since water that boils will result in
inaccurate readings.
Warning
Please Note
unless you have the following tools.
Mealstream Ovens Pt. No. 32Z3403 Issue 16
Page 22
Tim Hortons
To carry out this test the Icon Pads need
to be switched to
ENGINEERING MODE PROGRAMS
See Appendix 1
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