Daewoo KOR-971M0A Service Manual page 55

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Table Of Contents

Table of Contents

2-2. Judgement

The value of resistance should be applied to the value

specified below.

Door

Primary Interlock Switch

Secondary Interlock Switch

Interlock Monitor Circuit

3. Microwave Leakage Test

3-1. Warning

1) DO NOT place your hands into any suspected

microwave leakage field unless the safe density level is

known.

2) Always start measuring of an unknown field to assure

safety for operating personnel from microwave energy.

3) Slowly approach the unit under test until the radiometer

reads and appreciable leakage from the unit under test.

4) Care should be taken not to place the eyes in direct line

with the source of microwave energy.

3-2. Method

The power density of the microwave leakage emitted by the

microwave oven should not exceed 1mW/§† at any point

50mm (2 in). or more away from the external surface of the

oven as measured prior to acquisition by a purchaser and

there after once the oven is in use, 4mW/§† at any point

50mm (2 in) or more away from the external surface of the

oven, checks to be made around the whole of the door seal

and on each of the main unit surface.

Measurements should be made with the oven operating at

its maximum output and containing a load of 275 ¡ 15

milliliters of tap water initially at 68¡ 9 ¢ (20 ¡ 5 ¡ ) placed

within the cavity at he center of the load carrying surface

provided by the manufacture. The water container should

be a low from 600 milli-liters beaker having an inside

diameter of approximately 85mm (3-11/32 in.) and made of

an electrically nonconductive material such as glass or

plastic.

3-3. Procedures

1) Prepare 600cc glass or plastic container.

2) Pour 275 ¡ 15 milliliters of tap water initially at 68¡ 9 ¢

(20 ¡ 5 ¡ ) in the container.

3) Place it at the center of the tray and set it is a cavity.

4) Operate oven.

5) Measure the microwave leakage using a Narda 8100 or

similarly approved microwave leakage meter after a few

minutes operation.

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NOTE : The scan rate should not exceed 1 inch/sec.

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