MICROWAVE EMISSION TEST
Read all the below procedures and notes before checking the microwave emission level:
-
A microwave survey meter that is calibrated to operate and measure at 2,450 MHz must be
used.
-
It is important to set survey meters to its highest operating range and then adjust to lower
scales to ensure that emission readings are taken on the most sensitive scale.
-
All microwave survey meter probes must be held on the handle grip area. Holding the probes
outside this area could affect the emission readings.
-
When checking emissions, the probe should not be moved any faster than 1 inch/second (2.5
cm/second) with meter set to its fastest response setting.
-
Always hold the probe at a right angle from area being measured using the Styrofoam cone to
space the probe from the point being measured.
-
Microwave leakage should not be higher than 5.0mW/cm2.
Measuring procedure
1.
Make sure a copy of the customer’s menu is available; create a menu with the menu
temperature and warm up temperature set to 60, and with only one stage set to 60 seconds
with both magnetrons set to “On”. Load this into the sandwich press (
Note:
loading a menu file
into the control will erase the previously stored menu files).
2.
Put 275mL of cold water in a glass or ceramic bowl that is small enough to allow the sandwich
press to close.
3.
Place the bowl of water in the center of the cavity.
4.
Verify that the microwave leakage meter is on and set correctly.
5.
Press the menu button that corresponds to the newly created menu and close the lid.
6.
Wait 5 seconds after the menu begins and then start checking the microwave emissions.
7.
If more time is needed after the menu cycle ends; replace the water and run the menu again.
8.
Record the maximum leakage reading and reprogram the sandwich press with the customers
menu.
9.
Verify that the appliance preheats and functions properly before returning its operation back
over to the customer.
WARNING
Microwave emission testing must be performed after this appliance is serviced. The emission should
be less than 5mW/cm2; contact NEMCO if the emissions is higher than 5mW/cm2. Written records
must be taken of repairs made and of the emission readings that were taken to fulfill the
requirements set by the DHHS and Canada’s Health and Welfare regulation.
