Twin-Head Pump; Pairing And Unpairing Twin-Head Pumps - Grundfos MAGNA1 C Series Installation And Operating Instructions Manual

4.2 Twin-head pump

Make sure that both pump heads are powered on.
The pumps are paired from factory. When switching on the power
supply, the heads will establish connection, which is indicated by
a green light in the centre of Grundfos Eye. Please allow
approximately 5 seconds for this to happen.
If one of the pump heads is turned off, the pump with power will
show a yellow indicator light, warning 77, see section
finding the product. In that case, power up the switched off pump.
Once both pumps are on, the pumps will establish connection and
the warning deactivates.
See sections 8.4.1 Digital input
output and 8.4.3 Twin-head pump function
twin-head pump setup options.

4.3 Pairing and unpairing twin-head pumps

The pumps are paired from factory, however, it can be useful to
know how to pair the system e.g. for service purposes.
The pumps can also be unpaired.
When you have paired the pumps, you must wait 10
seconds before unpairing.
4.3.1 Pairing
The master pump head is the one from which you
initiate the pairing.
Step Action
Push and hold the
button on the
pump you wish to
assign as the
master pump for 5
1
seconds.
The centre of
Grundfos Eye on
both pumps will
begin to flash.
Push the button
on the other pump
2
to assign this as
the slave pump.
The centre of both
Grundfos Eye
indicator lights are
3 alight and
constant.
The two pumps
are now paired.
16
9. Fault
(Start/Stop), 8.4.2 Fault relay
for additional
Illustration
5 sec.
4.3.2 Unpairing
Step Action
Push and hold the
button on any of
1 the two pump
heads for 5
seconds.
The light in the
centre of Grundfos
2 Eye will disappear.
The system has
been deactivated.
Illustration
5 sec.