Explanation of the Auto Sensor Cooking process
1. During thefirst 10second periodthere isno microwave
activity. When calculating the T2 time by using the
formula below make sure this 10 seconds is subtracted
from the T1 time. In other words, 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 10second period.
3. T2 time When the steam escapes from the cooking
container placed in the oven, the steam sensor detects
it and the microprocessor calculates the balance of
cooking time. This T2 time is then shown in the display
and 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 tables along with the P1 and P2 powers.
NOTE:
When "More" or "Less" pad is selected, the K factor
variesresulting in T2 timeto beincreased ordecreased.
Example of calculating the T2 time
Example 1: If the T1 time is measured to be 2 minutes and
40 seconds after the 10 second period.
T2 = T1 × K
= 2 min. and 40 sec. × 0.1
= 160sec. × 0.1
= 16 sec.
Category P1
Power
P2
Power
K Factor
Standard
BPQ Fresh
Vegetable
900W 900W 0.5
EPG 1000W 1000W 0.5
2.5. Steam sensor and digitalprogrammer circuit
In order to determine if the steam sensor function of the digital
programmer circuit is working, do the following test.
1. Place awater load(150 cc) inthe oven.
2. Tap SensorReheat pad.
3. Tap Startpad.
4. Steam Sensordetects steam about 1.5to 4 minutesafter
the Start pad is tapped.
5. T1 time cookingautomatically switches to remainingtime
for cooking (T2).
6. The remaining cooking time (T2) appears in display
window. If the following cooking time appears, Steam
Sensor function is normal.
T1 TIME T2 TIME (Remainingcooking time)
50 Sec. ~ 12 Min. 0 Sec. ~ 10 Min.42 Sec.
7
NN-SD452W/ NN-ST462M / NN-ST452W