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Flow Sensor - Bosch SRU53E05AU Repair Instructions

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4.5

Flow sensor

The flow sensor is integrated in the water supply and registers the
amount of incoming water.
1
Turbine
2
Reed switch
815_58300000120057_ara_en_d.doc – 25.05.11
3
Shaft
4
Permanent magnets
It consists of a housing, a turbine (1) with permanent magnets (4) and
a board with reed switch (2).
The water sets the turbine (1) moving. The magnets (4) attached to
the turbine (1) actuate a reed switch (2) twice for each revolution.
The generated impulses are counted by the electronics module and
cannot be measured.
Technical specifications:
Designation
Hydraulic specifications:
Minimum flow rate
Maximum flow rate
Nominal flow rate
Electrical specifications
Output signal:
Switching current:
Nominal output signal at 2.5 l/min flow rate: 208 impulses / litre
To facilitate replacement of the flow sensor, immerse
the hoses in hot water. (Do not use washing-up liquid
or a similar lubricant)
Value
Unit
0.8
l/m
4.0
2.5
Rectangular
signal
mA
max. 5
Seite 13 von 60

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