Sharp Carousel R-1871 Suplemento ao Manual de Serviço - Página 4

Procurar online ou descarregar pdf Suplemento ao Manual de Serviço para Forno micro-ondas Sharp Carousel R-1871. Sharp Carousel R-1871 24 páginas. Over-the-range microwave oven/hood system
Também para Sharp Carousel R-1871: Manual de operação (32 páginas), Brochura e especificações (8 páginas), Manual de instalação (9 páginas), Manual de instruções de instalação (8 páginas)

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MICROWAVE MEASUREMENT PROCEDURE

A. Requirements:

1) Microwave leakage limit (Power density limit): The power density of microwave radiation emitted by a microwave oven

should not exceed 1mW/cm

by a purchaser, and thereafter (through the useful life of the oven), 5 mW/cm

surface of the oven.

2) Safety interlock switches: Primary interlock relay and door sensing switch shall prevent microwave radiation emission in

excess of the requirement as above mentioned, secondary interlock switch shall prevent microwave radiation emission in

excess of 5 mW/cm

at any point 5cm or more from the external surface of the oven.

B. Preparation for testing:

Before beginning the actual measurement of leakage, proceed as follows:

1) Make sure that the actual instrument is operating normally as specified in its instruction booklet.

Important:

Survey instruments that comply with the requirement for instrumentation as prescribed by the performance standard for

microwave ovens, 21 CFR 1030.10(c)(3)(i), must be used for testing.

2) Place the oven tray in the oven cavity.

3) Place the load of 275±15 ml (9.8 oz) of tap water initially at 20±5C (68F) in the center of the oven cavity.

The water container shall be a low form of 600 ml (20 oz) beaker with an inside diameter of approx. 8.5 cm (3-1/2 in.) and

made of an electrically nonconductive material such as glass or plastic.

The placing of this standard load in the oven is important not only to protect the oven, but also to insure that any leakage

is measured accurately.

4) Set the cooking control on Full Power Cooking Mode.

5) Close the door and select a cook cycle of several minutes. If the water begins to boil before the survey is completed, replace

it with 275 ml of cool water.

C. Leakage test:

Closed-door leakage test (microwave measurement)

1) Grasp the probe of the survey instrument and hold it perpendicular to the gap between the door and the body of the oven.

2) Move the probe slowly, not faster than 1 in./sec. (2.5 cm/sec.) along the gap, watching for the maximum indication on the

meter.

3) Check for leakage at the door screen, sheet metal seams and other accessible positions where the continuity of the metal

has been breached (eg., around the switches, indicator, and vents).

While testing for leakage around the door pull the door away from the front of the oven as far as is permitted by the closed

latch assembly.

4) Measure carefully at the point of highest leakage and make sure that the highest leakage is no greater than 4mW/cm

that the secondary interlock switch does turn the oven OFF before any door movement.

NOTE: After servicing, record data on service invoice and microwave leakage report.

at any point 5cm or more from the external surface of the oven, measured prior to acquisition

at any point 5cm or more from the external

, and