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Related information
3.1 Connecting to Grundfos GO Remote
3.5 How to disable Bluetooth on the
operating panel
In some installation areas it is not allowed to have a
Bluetooth signal enabled during operation. After
installation, the Bluetooth signal must be disabled
manually.
1.
Press and hold the connect button on the
operating panel for 15 seconds. Wait for the blue
LED to switch off.
Grundfos GO Remote is not connected to the
product anymore.
Related information
3.1 Connecting to Grundfos GO Remote
3.6 Configuring the IO terminals using
Grundfos GO Remote
The control unit is equipped with configurable input
and output terminals. Using Grundfos GO Remote,
you can configure the terminals for different functions,
depending on the device connected to the terminals.
1.
Go to Settings > LC 231 IO terminals.
2.
Select the terminal you wish to configure and
follow on-screen instructions.
You can find the names of the
terminals inside the control unit.
Related information
2.2.1 Removing the front cover
2.3.4 Connecting a level sensor
4.5 Terminals
8.7 Code 25 (Wrong configuration)
8.21 Code 191 (High water level)
8.22 Code 205 (Level switch inconsistency)
3.7 Testing the product
When you have made all the electrical installations
and completed the startup wizard, you can test the
system.
For emptying applications:
•
Fill the pit with water and check that the pump
starts automatically at the defined level.
•
Test the dry-running function by starting the
pump manually and wait while the pit with the
pump is emptied. Check that the control unit
indicates an alarm and stops the pump when the
defined level is reached.
•
Test the high-level function by stopping the pump
manually and continue to fill the pit with water.
Check that the control unit indicates an alarm
when the defined level is reached. Set the pump
to Auto and observe that the pump starts and
stops when the stop level has been reached.
For filling applications:
•
Start by draining the tank to be filled. When the
tank is empty and the start level is reached, the
pump must start. When the tank is full and the
stop level is reached, the pump must stop.
•
Test the high-level function by stopping the pump
manually and continue to fill the tank without the
pump with water. Check that the control unit
indicates an alarm when the defined level is
reached.
•
Test the dry-running function by starting the
pump manually and wait while the tank with the
pump is emptied. Check that the control unit
indicates an alarm and stops the pump when the
defined level is reached. If the pump is placed in
a well, this test may not be possible since the
pump cannot empty the well. Alternatively, pull
the dry-run level switch up to simulate a dry-run
situation. The same can be done with a pressure
level sensor.
4. Product introduction
4.1 Product description
The level-control unit switches the pump on and off
according to the liquid level measured by float
switches or a pressure sensor. When the start level is
reached, the pump starts, and when the liquid level
has been lowered to the stop level, the pump is
stopped by the control unit. An alarm is indicated in
case of for example high-water level in the tank or
sensor failure.
Basic settings are configured via the operating panel
and advanced settings are configured with Grundfos
GO Remote. Furthermore, you can read important
operating parameters with Grundfos GO Remote.
4.2 Intended use
The control unit is designed to control one pump.
The product can be configured for two purposes:
emptying a wastewater pit or filling a pit or tank. The
product can be used for network pumping stations,
main pumping stations, commercial buildings and
municipal systems.
If the product is used in an explosive environment,
follow local regulations. If required use additional
equipment.
4.3 Features
The control unit features among others the following
functions:
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