Product Introduction - Grundfos LC 231 Montage- Und Betriebsanleitung

3.3 Startup wizard on the operating panel
The first time the control unit is switched on, a startup wizard will
guide you through the basic settings. You can select the sensor
type and sensor levels. For some products, you can also set the
nominal pump current and number of phases.
If you have an analog sensor, select S-1 and set the height of the
different levels, from dry running to high level.
If you have a digital sensor, select S-2 and enable or disable the
dry-running level, the start level for pump 2, if available and the high
level.
To change settings, use the Up and Down buttons on the operating
panel.
Use the OK button to confirm each setting and navigate to the next
setting.
For filling applications, you must use Grundfos GO Remote. Units
can only be changed with Grundfos GO Remote.
Designation Description
S-1 Analog sensor
S-2 Digital sensor
-- A Nominal current (see the nameplate of the pump)
1Ph Single-phase
3Ph Three-phase
Related information
6.1 Setting the application type with Grundfos GO Remote
6.23 Starting the startup wizard with the operating panel
3.4 How to enable Bluetooth on the operating panel
If the Bluetooth signal on the operating panel has been disabled for
some reason, you are not able to connect with Grundfos GO
Remote. You must enable Bluetooth first.
1. Press and hold the connect button on the operating panel for
15 seconds. Wait for the blue LED to light up.
2. Press the Bluetooth CONNECT button on Grundfos GO
Remote.
3. Press the connect button on the operating panel. The blue LED
above the connect button is flashing blue until your device is
connected.
Grundfos GO Remote is now loading the data for the product.
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 no longer connected to the product.
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
2.2.2 Removing the front cover
2.3.4 Connecting a level sensor
4.5 Terminals
8.7 Code 25 (Wrong configuration)
8.24 Code 191 (High water level)
8.25 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 product is designed to control one pump or two pumps.
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.
The product must not be exposed to aggressive solvents or oil-
containing liquids.
4.3 Features
The control unit features among others the following functions:
• manual and automatic control of the pump
• Bluetooth pairing with Grundfos GO Remote
• operating indication, such as power on and pump running
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