69
EN
5.13.3 Locking/unlocking the button
The keypad lock is activated by pressing the command button (4)
for 8 seconds and it blocks the pump settings. The keypad lock
protects the pump against involuntary/unauthorised changes to
the pump.
5.13.4 Activating factory settings
The factory setting can be activated by pressing and holding the
command button (4) until the LED (1) switches off. After restart-
ing the pump, the latter will operate with the factory setting (its
condition on delivery).
5.13.5 Manual restart
When a block is detected, the pump attempts to restart auto-
matically.
If the pump does not restart automatically:
– press the command button (4) for 5 seconds then release it
– the restart function activates for a maximum of 10 minutes
– LEDs (2) and (3) will flash one after the other clockwise.
After the restart, LEDs (2) and (3) will indicate the settings be-
fore the lock-out.
m
CAUTION
To interrupt the pump’s operation, press the com-
mand button (4) for 5 seconds.
a
WARNING
If the fault persists, please contact the Technical As-
sistance Centre.
The flow-residual head curve available for the heating system is
shown in the graph below.
RESIDUAL HEAD (mbar)
0
0
800
1000 1200 1400 1600
600
400
200
100
200
300
400
500
600
700
FLOW (l/h)
Fig. 25
d
IT IS FORBIDDEN
to operate the pumps without water.
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