Panasonic NN-T559WB, Service Manual

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4.3 Auto Sensor cook NN-T589WB
Auto sensor cooking is a revolutionary way to cook by
microwave without setting a power level or selecting a time.
All that is necessary is to select an Auto Sensor Program before
starting to cook.
Understanding Auto Sensor Cooking
As a food cooks, a certain amount fo steam is produced. If the
food is covered, this steam builds up and eventually escapes
from the container. In Auto Sensor Cooking, a carefully designed
instrument, called the steam sensor element, senses this
escape of steam. Then, based upon the Auto Sensor
Programme selected, the unit will automatically determine the
correct power level and the proper length of time it will take to
cook the food.
NOTE: Auto Sensor Cooking is successful with the foods
and recipes found in the Auto Sensor Cooking
Guide. Because of the vast differences in food
composition, items not mentioned in the Cooking
Guide should be prepared in the microwave oven
using power select and time features. Please consult
Variable Power Microwave Cookbook for
procedures.
Explanation of the Auto Sensor Cooking process
1. During the first 10 second period there is no microwave
activity, and when calculating the T2 time by using the
formula below make sure this 10 seconds is subtracted from
the T1 time. In other words the T1 time starts at the end of
the 10 second period.
2. T1 Time...The total amount of time it takes the microwave
oven to switch to T2 time after the 10 second period.
3. T2 Time...When the steam escapes from the cooking
container placed in the oven, the steam sensor detects it and
the microprocessor calcuates the balance of the cooking
time. This T2 time is then shown on the display and the
begins counting down.
Balance of cooking time (T2 time)
The balance of cooking time which is called T2 time, can be
calculated by the following formula.
T2 time (in sec.) = T1 time x K factor
NOTE: Remember, the T1 time starts after the 10 second
period. The coefficient K is programmed into the
microprocessor memory and they are listed in the
following table along with P1 and P2 powers.
NOTE: When “More” or “Less” pad is selected, the K factor
varies resulting in T2 time to be increased or
decreased.
Example of calculating T2 time
Example 1: If the T1 time is measured to be 2 minutes and 40
seconds after the 10 second period, and the Auto
program selected is Fish:
T2 = T1 x K
=2 min. and 40 sec. x 0.1
= 160 sec. x 0.1
= 16 sec.
AUTO SENSOR COOK
CATEGORY P1 POWER P2 POWER K FACTOR
FRESH VEG HIGH HIGH 0.5
FROZEN VEG HIGH HIGH 0.1
FRESH FISH HIGH HIGH 0.1
FROZEN FISH HIGH HIGH 0.1