SOI/DT 2010-03 dmm
51/78
599 72 84-41
11.4 Analogue pressure switch of water level control in the tub
General characteristics
The electronic pressure switch is an analogue device that controls the water level in the tub, used in the models
with electronic control system and it is directly connected to the main PCB.
ELECTRONIC PRESSURE SWITCH
Electronic circuit
Electrical symbol
The pressure switch is connected via a tube to the pressure chamber.
When water is introduced into the tub, this creates a pressure inside the hydraulic circuit that causes the
membrane to change position. This in turn modifies the position of the core inside the coil, thus changing the
inductance and the frequency of the oscillating circuit.
The PCB recognises how much water has been introduced into the tub according to the frequency.
1 tube
3 oscillating coil
5 core
Operating frequency variation according to the quantity of water in
the tub
Содержание TC2
Страница 2: ...SOI DT 2010 03 dmm 2 78 599 72 84 41 ...
Страница 65: ...SOI DT 2010 03 dmm 65 78 599 72 84 41 13 DIAGRAMS 13 1 WM diagram with UNIVERSAL MOTOR EWM 21xx ...
Страница 67: ...SOI DT 2010 03 dmm 67 78 599 72 84 41 13 2 WM diagram with THREE PHASE ASYNCHRONOUS MOTOR EWM 25xx ...
Страница 69: ...SOI DT 2010 03 dmm 69 78 599 72 84 41 13 3 WD diagram with UNIVERSAL MOTOR EWM 21xx ...
Страница 71: ...SOI DT 2010 03 dmm 71 78 599 72 84 41 13 4 WD diagram with THREE PHASE ASYNCHRONOUS MOTOR EWM 25xx ...
