Daewoo KOR-164H0A, Руководство по обслуживанию

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21
MEASUREMENT AND TEST
1. MEASUREMENT OF THE MICROWAVE POWER OUTPUT
Microwave output power can be checked by indirectly measuring the temperature rise of a certain amount of water
exposed to the microwave as directed below.
PROCEDURE
1. Microwave power output measurement is made wit the microwave oven supplied at rated voltage and operated at
its maximum microwave power setting with a load of 1000 ± 5cc of potable water.
2. The water is contained in a cylindrical borosilicate glass vessel having a maximum material thickness of 3 mm and
an outside diameter of approximately 190 mm.
3. The oven and the empty vessel are at ambient temperature prior to the start of the test. The initial temperature of
the water is 10 ± 2 ° C (50 ± 3.6 ° F). It is measured immediately before the water is added to the vessel. After
addition of the water to the vessel, the load is immedi-
ately placed on the center of the shelf, which is in the
lowest normal position.
4. Microwave power is switched on.
5. Heating time should be exactly A seconds.
(Refer to table as following)
Heating time is measured while the
microwave generator is operating at
full power. The filament heat-up time
for magnetron is not included.
6. The initial and final temperature of water is selected
so that the maximum difference between the ambient
and final water temperature is 5K.
7. The microwave power output P in watts is calculated
from the following formula:
•
∆
T is difference between initial and ending temperature.
• t is the heating time.
The power measured should be B (Refer to SPECIFICATIONS) W ± 10.0 %.
✻
Heating time for power output:
CAUTION
1. Water load should be measured exactly to 1 liters.
2. Input power voltage should be exactly specified voltage (Refer to SPECIFICATIONS).
3. Ambient temperature should be 20 ± 2° C (68 ± 3.6 ° F)
P = 4187 X
∆
T/t
70
600
64
650
60
700
56
750
52
800
49
850
47
900
44
950
42
1000
40
1050
38
1100
A (second)
B (W)