6.6 Stop delay
The stop delay is the time from when the stop level is reached until
the pump stops. The stop delay prevents the pump from starting
and stopping too frequently and reduces water hammer in long
pipes.
6.6.1 Setting the stop delay with Grundfos GO Remote
1. Select Settings > Level control > Stop delay > State
2. Select Stop delay time.
3. Set the Stop delay time.
6.7 Power-on delay
With this function it is possible to delay the startup of the pump after
the power supply has been switched on. The purpose is to avoid
disturbing the main power network which could happen if several
pumps start up immediately when the power supply is switched on.
6.7.1 Setting the power-on delay with Grundfos GO Remote
1. Go to Settings > Power-on delay.
2. Set the function to Enabled.
3. Set the time delay.
6.8 Dry-running protection
If the pump is running and the liquid level in the tank or pit becomes
lower than the dry-running level, the dry-running protection will stop
the pump to ensure that it is not damaged.
Dry-running protection is dependent on a feedback signal from a
level sensor installed in the tank or pit.
6.8.1
Setting the dry-running level with Grundfos GO Remote
1. Go to Settings > Level control > Dry-running level.
2. Set the dry-running level.
The dry-running level must be set to a value which
ensures that the pump is not damaged due to dry-
running. The specific level depends on the installed
pump type. See the installation and operating
instructions for the product.
6.8.2 Setting the dry-running level with the operating panel
1. Press and hold OK until the display starts flashing.
2. Set the dry-running level using the Up or Down button.
3. Continuously press OK to confirm all other settings and to exit
the setup.
6.9 Using the same level switch for the start and stop
level
1. Set one digital input to Start pump 1 or Stop. All other digital
inputs must be disabled.
2. Set a stop delay.
This will prevent the pump from starting and stopping too
frequently.
6.10
Automatic test run
This function prevents a pump from choking or seizing up as a
result of deposits buildup. The function is used in pits that have had
no inlet flow for a long period. The function ensures that the pump
starts as often as set in Automatic test run > Interval. The pump
operates for the number of seconds set by the user.
6.10.1
Setting the automatic test run function with Grundfos
GO Remote
1. Go to Settings > Automatic test run.
2. Set the function to Enabled.
3. Set the time interval.
4. Set the operating time.
6.11
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.
6.11.1 Setting the signal-detection time with Grundfos GO
Remote
1. Go to Settings > Level control > Signal detection time.
2. Set the signal-detection time.
6.12 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
6.15.4 Setting the motor protection with Grundfos GO Remote
6.15.1 Overheat protection
6.15.2 Overload protection
8.3 Code 4 (Too many motor restarts)
6.13 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.
6.14 Operating the product
6.14.1 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
6.14.2
Manual operation
6.14.2.1 Starting and stopping the pump manually with
Grundfos GO Remote
1. Go to Settings > Control, pump 1.
2. Start the pump by selecting On and pressing OK.
3. Stop the pump by selecting Off and pressing OK.
Related information
6.14.2.3 Choosing what the pump must do after manual start
6.14.2.2 Starting and stopping the pump manually with the
operating panel
6.14.2.2
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.
15
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