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 232 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
2.2.3 Removing the front cover
4.5 Terminals
8.7 Code 25 (Wrong configuration)
8.22 Code 191 (High water level)
8.23 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 dewatering applications:
• Ensure the pit is filled with water and check that the pump starts
automatically at the defined level.
• If possible, 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.
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 or two pumps.
The product can be configured for the following two purposes:
• dewatering in groundwater supply
• filling a tank.
The product can be used for the following applications:
• groundwater supply
• irrigation systems
• small waterworks
• network pumping stations
• main pumping stations
• commercial buildings
• municipal systems.
The product must not be exposed to strong 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
• alarm and warning indication, such as power phase missing and
high-water level
• motor and phase failure protection
• setting of stop delays matching the actual operating conditions
4.4 Application types
You can choose between two application types:
• Dewatering
• Fill.
You can set the application type with Grundfos GO Remote.
Dewatering
TM075204
Pos.
Description
1 High level
2 Not in use
3 Start level P1: start level for pump 1
4 Stop level
5 Dry-running level
The pump starts to empty the tank or well when Start level P1 is
reached.
The pump stops when the liquid level is lowered to Stop level.
11
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