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Grundfos CU 241 User Manual

Grundfos CU 241
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TM0713341
Pos. Description
1 High level
2 Start level P2: start level for pump 2
3 Start level P1: start level for pump 1
4 Stop level
5 Dry-running level
The pump will start to empty the tank or pit when Start level P1 is reached.
A second pump will start if the liquid level reaches Start level P2.
The pump stops when the liquid level is lowered to Stop level.
If the inflow of liquid exceeds the capacity of the installed pump, the level in the tank or pit will rise. Eventually, the High level sensor will
register a high liquid level in the tank or pit. If set, the signal from the High level sensor can be used to activate an output relay which can then
be used to indicate a visual or acoustic alarm or send a signal to a SCADA system.
If the pump is running and the liquid level in the tank or pit falls below the dry-running level, the dry-running protection will stop the pump to
ensure that it is not damaged mechanically.
Fill
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2
3
4
5
TM0713351
Designation
Description
1 High level
2 Stop level
3 Start level P1: start level for pump 1
4 Start level P2: start level for pump 2
5 Dry-running level
In the filling application, the pump is installed in a tank or well from where it pumps the liquid. The liquid is pumped into a second tank where
the level sensors are installed.
The pump will start to fill the second tank when Start level P1 is reached.
A second pump will start if the liquid level reaches Start level P2.
The pump stops when the liquid level reaches Stop level.
If the pump for some reason does not stop at Stop level and the liquid level keeps rising, the High level sensor will eventually register this. If
set, the signal from the High level sensor can be used to activate a relay output which can then be used to indicate a visual or acoustic alarm
or send a signal to a SCADA system via a communication interface.
If the pump is running and the liquid level in the tank falls below the dry-running level, the dry-running protection will stop the pump to ensure
that it is not damaged.
Related information
7.1.2 Automatic operation
13
English (GB)

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Grundfos CU 241 Specifications

General IconGeneral
BrandGrundfos
ModelCU 241
CategoryControl Unit
LanguageEnglish

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