Install Instructions

9.2.1.2 Roof tank filling
In the installation below, the level switch is used to signal the pump
to run when the water level in the tank drops.
The example below shows the float switch in the input closed
position. In this case, the pump should not run, and Grundfos GO
Remote settings indicate that the input is closed.
If you exceed the maximum tapping point of the pump, the external
input should run on input only.
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5
2
3
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TM075330
Pos. Description
1 Float switch
2 External input (switch) cable
3 Pump
4 Water source (tank)
5 Roof tank
9.2.2 Calendar function
The operation of SCALA1 can be scheduled in the calendar
function of the Grundfos GO Remote app.
This function determines when the pump is allowed to run and
when not. It is particularly beneficial for irrigation and agriculture
purposes, where the pump should be active only within a certain
period of time.
9.2.2.1
Enabling calendar function
To enable this function, go to Grundfos GO Remote app and follow
these steps:
1. Connect to the pump.
2. Go to Scheduling.
3. Press Save schedule.
The pump will now run on demand, but only within the time period
set in the calendar function.
When the pump has been stopped by the calendar
function, it will be indicated on the HMI by a steady yellow
Grundfos Eye.
9.2.3 Performance modes
Different performance modes can be selected for SCALA1.
Selecting the correct mode is dependent on the installation.
There are 3 performance modes for SCALA1:
• self-priming
• air handling
• positive inlet.
The default mode is self-priming, which will be the desired mode for
most installations.
Performance mode Description Benefits
Self-priming
The self-priming
valve is fully
opened.
Best performance
and lowest noise
level in suction
applications.
Air handling
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When there is air in
the installations, it
can accumulate in
the hydraulics.
Partially closing the
self-priming valve
can provide
assistance.
Improves the pump's
capability to handle
air in the water.
Positive inlet
If the installation has
a positive inlet
pressure, the pump
is always primed,
and the self-priming
valve can be fully
closed.
Removes sound
associated with self-
priming valve
movement in
installations with
positive inlet
pressure.
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This performance mode will result in some performance loss and a slight
increase in noise level. Please refer to technical data for more information.
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English (GB)