4.8 Heater
The heater has two integrated fuses (boil-dry protection). The fuses
cannot be changed.
When the front panel has been removed, the heater is changed from
the front.
►
Nominal power
1900 W
►
Nominal voltage
230 VAC
►
Power tolerance
+5 % ....... –10 %
►
Resistance
approx.
25
Ω
A Heating
elements
B Integrated
fuses
C
NTC (resistance with negative temperature coefficient)
4.9 NTC
The NTC operating range is between –5 °C and 103 °C. If the NTC
value is outside the operating range (e.g. interruption or short-circuit),
the programme continues cold without an error display. The test
programme displays “NTC short circuit” or “NTC interruption”. The
NTC is inserted into the heating flange and is sealed with the heater
seal. The NTC can be removed after desconnecting the heater.
Temperature in °C
Resistance in k
Ω
10
8,5 - 10,6
20
5,4 - 6,5
30
3,5 - 4,3
40
2,3 - 2,9
50
1,5 - 1,9
60
1,1 - 1,3
66
0,9 - 1,1
86
0,45 - 0,55
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