3-16
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 full-scale deflec-
tion.
•Do not move the test probe along the mea-
suring surfaces faster than 1-inch-per-sec-
ond (2.5 cm/sec), otherwise a false reading
will occur.
•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
MHz, and use it according to the
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.