9.3 Resetting to factory settings
To reset the pump to factory settings via the HMI:
1. Press and hold [Enable/
Disable] and [Reset] buttons simultaneously for 5
seconds.
Enable/Disable button
Reset button
It is also possible to reset to factory settings in
Grundfos GO Remote.
10. SCALA1 twin booster configuration
TM075400
SCALA1 twin booster system
Pos. Description
1 Inlet and outlet manifolds
2 Isolation valves
3 Twin base plate
Not pictured:
communication cable
and fixing screws
SCALA1 can be easily set up as a twin boosting
system by using the accessory set and Grundfos GO
Remote.
In the twin setup, the two SCALA1 pumps
communicate together via a cable included in the
accessory set.
The twin boosting system is beneficial when the water
flow demand is higher, or a system with a standby
pump is required.
Once connected, a priority will be assigned
automatically to the pumps.
In the twin booster configuration, an HMI on one
pump will act as system HMI, meaning that all actions
done on one pump HMI will be propagated to the
other pump in the system.
All the alarms and functions of the pump are also
available for the twin system.
10.1 Operation modes and parameters
Once SCALA1 is installed as a twin booster system, it
can run in two different operation modes.
Duty/Standby
In Duty/Standby operation mode, only one pump will
run at a time in the twin system. This means that the
maximum performance of the system will be the
same as the maximum performance of a single
SCALA1 unit. In case one pump fails to start, the
other one will run. The pumps will switch priority at
the start based on the alternation settings.
Duty/Assist
Running in Duty/Assist operation mode brings more
flow on the outlet side, as both pumps can run at the
same time. A pump with an assigned priority will start
first and, in case it cannot deliver the necessary flow,
the second pump will start. In case one pump fails to
start, the system will continue running with one pump.
The pumps will switch priority at the start based on
the alternation settings.
Alternation can be set based on runtime or number of
starts. This is done through the Grundfos GO Remote
application, either in the initial setup or through the
Settings tab on the Dashboard screen.
"No alternation" is only available for
selection when operating in Duty/Assist.
10.2 Setting SCALA1 twin booster system
WARNING
Electric shock
Death or serious personal injury
‐ Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
21
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