Microwave Oven Hood Combo Service Manual — LIT 4317216
Original 03/97
Page
MAKING THE MEASUREMENTS
Measuring The Oven With The Cabinet Installed
MEASUREMENT NOTES:
•When measuring for leakage, use the 2" (5 cm ) spacer that is provided with the probe.
•Leakage with the outer panels removed should be less than 5 mW/cm.sq.
•Leakage for a fully assembled oven (before the lamp switch primary is interrupted) with the door opened slightly, should be less than 2 mW/cm.sq.
•Do not exceed the meter’s
•Do not move the test probe along the mea- suring surfaces faster than
•When testing near a corner of the door, keep the probe perpendicular to the sur- face, and move it horizontally without touch- ing 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 275 (±25cc) of water into a 600 cc graduated beaker.
2.Place the beaker into the center of the microwave oven.
3.Set the energy leakage monitor to 2,450 M H z , a n d u s e i t a c c o r d i n g t o t h e manufacturer’s recommended test pro- cedure 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 mi- crowave energy leakage after all of the neces- sary components are replaced or adjusted, and before the cabinet is installed. Take spe- cial care to measure around the magnetron and the waveguide. WARNING: Be careful not to contact any of the high voltage com- ponents when making measurements with the cabinet removed.
