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10.2003 R.K. 599 518 355
Heating Element
General characteristics
The element for heating the water is of the
encapsulated type, i.e. the spiral resistor is
hermetically sealed in a stainless steel enclosure.
Power 1600 W
Resistance 230 V 31.2 - 34.3 Ohm
240 V 33.9 - 37.4 Ohm
1 Element
2 Rubber packing
3 Fixed f lange
4 Electrical connection pin
5 Locking nut
6 Adjustable f lange
7 Fuse
The seal between the element and the outer drum is
obtained with a rubber packing which expands when
the locking nut is tightened.
NTC-Thermistor (Temperature control)
Temperature control by means of NTC thermistors is incorporated in models
controlled by Programmed control units VA 60, VB 60 and VE 60.
NTC temperature sensors
1 Plastic housing
2 Metal capsule
3 NTC resistance
4 Electrical contacts
Table with resistance at different temperatures (3%)
Temperature °C Resistance kOhm
30 17.3
40 11.5
50 7.84
60 5.46
70 3.90
78 2.97
85 2.32
The temperature of the washing water is controlled by the microprocessor via an NTC sensor.
The internal resistance ofthe sensor decreases äs the temperature increases. This decrease is registered by the
microprocessor which disconnects the heating element when the required temperature has been reached.
With a short-circult or other failure in the NTC thermistor, the control unit cancels the heating stage and completes the
program without heating.
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