Panasonic NE-3280 Procedure For Measuring Radiation Leakage, Measurement of microwave output

NE-3280 / NE-2180 / NE-2180C

13.3.Adjustment of the primary interlock switch (SAFETY SWITCH A) (Right and Left side)

1.Switch operation

When the door is slightly opened, the contacts of primary interlock switch opened to give digital programmer circuit the information that the door is opend. The allowable movement of the door from the closed position to the operating position (shown as liter) of the switch when it opens the circuit, is specified as follows;

PRIMARY INTERLOCK SWITCH (liter) = 1 mm — 3 mm (When primary interlock switch opens the circuit)

NOTE:

Make sure that primary interlock switch turn off prior to the secondary interlock switch when the door is gradually opened.

2.How to adjust primary interlock switch

Loosen 2 screws which secure the primary interlock switch bracket to the bracket of the oven assembly and then adjust the primary interlock switch bracket by moving it to either direction as shown in figure.

13.4.Measurement of microwave output

The output power of the magnetron can be determined by performing IEC standard test procedures. However, it is possible to test the magnetron by following procedure outlined below.

Necessary equipement:

·1 litre beaker

·Glass thermometer

·Wrist watch or stopwatch

NOTE:

Check the line voltage under load to ensure it meets specifications. Low voltage condition will cause a reduction in magnetron output. Temperature readings and heating time, should be as accurate as possible.

Output power performance test procedure.

1.Fill the beaker with exactly one litre of tap water. Stir the water using the thermometer and note the temperature. (Record as T1)

2.Place the beaker in the center of cook plate. Set the oven for High power and heat for exactly one minute.

3.After completion of the heating cycle, stir the water again

with the thermometer and note the temperature. (Record as T2)

The normal temperature rise (T2 — T1) at High power position for each models is as shown in following table.

Model	Temperature Rise (1 liter — 1
	Min.)
NE-3280	Min. 27.4°C
NE-2180	Min 18°C
NE-2180C

14 PROCEDURE FOR MEASURING RADIATION LEAKAGE

WARNING

Check for radiation leakage after every servicing.

Should the leakage be more than 2 mW/square centimeter (1mW/square centimeter for Canada) infrorm PASC, PSC, or PCI immediately. Aftr 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 ticket while in the customer’s home.

NOTE:

The U.S.government standard is 5mw/square centimeter while in the customer’s home. 2mw/square centimeter stated here is Panasonic’s own voluntary standard.

14.1. Equipment

· Electromagnetic radiation monitor

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