Hoshizaki HFE-140B Series, Руководство по обслуживанию

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38
R (k
Ω
)
Temperature (°C)
0
10
20
30
40
50
60
-50 -40 -30 -20 -10 0 10 20 30
R (k
Ω
)
Temperature (°C)
[b] CHECKING THERMISTOR
1) Remove the Thermistor’s intermediate connector from the Controller Board.
2) Put ice and water in a glass or other container to make 0°C water. Immerse the
Thermistor bulb in the water for 5 minutes (at the center of the container).
3) Use the
Ω
range of the tester to measure the resistance between the Thermistors.
4) If the measured resistance is not within:
Interior/Defrost Thermistor 5 - 6.5 k
Ω
(standard 6 k
Ω
)
Clog Thermistor 150 - 180 k
Ω
(standard 162 k
Ω
)
replace the Thermistor (see the T-R curve below).
T-R Curve (Interior/Defrost Thermistor)
T-R Curve (Clog Thermistor)
The graph shows reference values only
and may differ from actual values.
⎭
⎬
⎫
⎩
⎨
⎧
⎟
⎠
⎞
⎜
⎝
⎛
−
+
× × =
15 . 273
1
15 . 273
1
3390 6
T
Exp R