Antiseizing; Signal-Detection Time; Setting The Maximum Number Of Restarts With Grundfos Go Remote; Setting The Service Interval With Grundfos Go Remote - Grundfos LC 241 Montage- Und Betriebsanleitung

6.12 Antiseizing

The Anti-seizing function prevents a pump from choking or seizing
up as a result of deposits buildup. Anti-seizing is used in pits that
have had no inlet flow for a long period. The Anti-seizing function
ensures that the pump starts as often as set in Anti-seizing > >
Interval. The pump will operate for the number of seconds
indicated by the user.
6.12.1 Setting the "Anti-seizing" function with Grundfos GO
Remote
1. Go to Settings > Anti-seizing.
2. Set the function to Enabled.
3. Set the time interval.
4. Set the operating time.

6.13 Signal-detection time

The signal-detection time is the minimum time a level has to be
active before the control unit initiates an action, such as starting or
stopping a pump.
6.13.1 Setting the signal-detection time with Grundfos GO
Remote
1. Go to Settings > Level control > Signal detection time.
2. Set the signal-detection time.
6.14 Setting the maximum number of restarts with
Grundfos GO Remote
If the pump is seized up as a result of deposits buildup, it will be
stopped automatically due to overheating, provided that the motor
protection has been set. When the motor has cooled down, the
control unit will unsuccessfully try to restart the pump and this
scenario will be repeated.
In order to prevent this, it is possible to set a maximum number of
restart attempts within a set interval.
1. Go to Settings > Max number of restarts.
2. Enable the function.
3. Set the interval within which the allowed number of restarts are
to be counted.
4. Set the maximum number of pump restarts which are allowed
during the set interval.
Related information
6.17.1 Overheat protection
6.17.2 Overload protection
8.3 Code 4 (Too many motor restarts)
6.15 Setting the service interval with Grundfos GO
Remote
You can set a time in Grundfos GO Remote in order to get a
reminder that the pump needs service when the time comes.
1. Go to Settings > Service > State
2. Select Enable and press OK.
3. Select the pump.
4. Enter the number of hours until next service and press OK.

6.16 Operating the product

6.16.1 Automatic operation
In automatic operating mode, the control unit starts and stops the
pump based on the signals it receives from the connected level
sensors and the corresponding level settings within the control unit.
Related information
4.4 Application types
6.16.2 Manual operation
6.16.2.1 Starting and stopping the pump manually with
Grundfos GO Remote
1. Go to Settings > Control, pump 1 or Control, pump 2.
2. Start the pump by selecting On and pressing OK.
3. Stop the pump by selecting Off and pressing OK.
Related information
6.16.2.3 Choosing what the pump must do after manual start
6.16.2.2 Starting and stopping the pump manually with the
operating panel
1. To start a pump manually, press and hold the Pump button until
the pump starts.
The On indicator light is lit when the pump is operating in
manual mode.
2. Stop the pump by pressing the Pump button.
The Off indicator light is lit when the pump is stopped.
Related information
6.16.2.3 Choosing what the pump must do after manual start
6.16.2.3 Choosing what the pump must do after manual start
The following can be configured:
• Automatic return
Here you select if the pump must automatically return to a
defined operating mode when the manual start ends.
• Return to
Here you select whether the pump must return to automatic
operating mode or stop when the manual start ends and
Automatic return has been enabled.
• Forced start time
Here you set the time period in which the pump must run in
manual operating mode.
1. Go to Settings > Manual start.
2. Select Automatic return and choose one of the following
options:
• Disabled
• Enabled.
3. Go one step back in the menu and select Return to.
4. Choose one of the following options:
• Auto
• Off.
5. Go one step back in the menu and select Forced start time.
6. Set the time period in which the pump must run in manual
operating mode.
Related information
6.16.2.2 Starting and stopping the pump manually with the
operating panel
6.16.2.1 Starting and stopping the pump manually with Grundfos
GO Remote

6.17 Motor protection

Make sure that all settings are entered according to the
pump and system requirements to avoid malfunction.
6.17.1 Overheat protection
The control unit offers thermal protection for the connected motors.
Two types of thermal-protection sensor can be connected to the
control unit: a PTC sensor (analog) and a thermal switch (digital).
Under normal running conditions, the sensor will act as a short
circuit, but when its temperature limit is reached, it will open and tell
the control unit that the temperature is too high, and the pump is
stopped. When the temperature has dropped to the sensor-trigger
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