Daewoo KOT-150S0A, Руководство по обслуживанию

Страница: 37 / 72

36
If a microwave oven is found to operate with the door open, report to Department of Service, the manufacturer and
CDRH* immediately. Also tell the owner not to use the oven.
The interlock monitor switch acts as the final safety switch protecting the customer from microwave radiation.
If the interlock monitor switch operates and opens the line fuse, the interlock switches have failed, and you must replace
all of them(primary and secondary interlock switches, and the monitor switch), because their contact may be melted and
welded together.
All repairs must be performed so that microwave energy emissions are minimal.
CDRH.-Center for Device and Radiological Health, Food, and Drug Administration.
MAKING THE MEASUREMENTS
MEASURING THE OVEN WITH THE CABINET INSTALLED MEASUREMENT NOTES:
• When measuring for leakage, use the 2”(5cm) spacer that is provided with the probe.
• Leakage with the outer panels removed should be less than 5mW/cm
2
• Leakage for a fully assembled oven (before the lamp switch primary is interrupted) with the door opened slightly, should
be less than 2mW/cm
2
• Do not exceed the meter’s full-scale deflection.
• Do not move the test probe along the measuring surfaces faster than 1-inch-per-second (2.5 cm/sec), otherwise a
false reading will occur.
• When testing near a corner of the door, keep the probe perpendicular to the surface, and move it horizontally with out
touching the surfaces, otherwise a false reading will occur.
• Hold the test probe by its gripping surface only, otherwise a false reading will occur.
To measure for oven leakage:
1. Pour 275cc(±25cc) of water into a 600 cc glass beaker.
2. Place the beaker into the center of the microwave oven.
3. Set the energy leakage monitor to 2,450 MHz, and use it according to the manufacturer’s recommended test
procedure to obtain the correct results.
4. Measure the microwave radiation with an electromagnetic radiation monitor. Hold the probe perpendicular to the
surface being measured and measure around the door viewing window, the exhaust opening, and air inlet openings.
5. Operate the oven at its maximum energy output, and take the measurements.
MEASURING THE OVEN WITH THE CABINET REMOVED
When the magnetron has been replaced, use the previous procedure, and measure for microwave energy leakage after
all of the necessary components are replaced or adjusted, and before the cabinet is installed.
Take special care to measure around the magnetron and the waveguide.
WARNING :
Be careful not to contact any of the high Voltage components when making measurements with the cabinet
removed.