Description Of Operating Elements - Wilo Stratos GIGA2.0-Serie Montageanleitung

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11.2

Description of operating elements

Fig. 28: Operating elements
96
Commissioning
2. After venting the pump, tighten the air vent valves again so that no more water
can escape.
CAUTION
Destruction of the differential pressure sensor!
• Never vent the differential pressure sensor!
NOTICE
• Always keep to the minimum pressure!
ƒ
To avoid cavitation noises and damage, a minimum inlet pressure must be guaran-
teed at the suction port of the pump. The minimum inlet pressure depends on the
operating situation and the pump's duty point. Accordingly, the minimum pressure
must be determined.
ƒ
The main parameters for defining the minimum inlet pressure are the NPSH value of
the pump at its duty point and the vapour pressure of the fluid. The NPSH value can
be found in the technical documentation of the respective pump type.
NOTICE
When pumping from an open tank (e.g. cooling tower), ensure that there is always a
sufficient liquid level above the pump's suction port. This prevents the pump from
running dry. The minimum inlet pressure must be observed.
Pos. Designation
Graphic display
1
Green LED indic-
ator
2
Blue LED indicator
3
Operating button
4
Back button
5
Context button
6
Table 14: Description of operating elements
Explanation
Provides information about settings and pump status.
Self-explanatory user interface for setting the pump.
LED is lit up: Pump is supplied with voltage and ready for
operation.
There are no warnings and no faults.
LED is lit up: Pump is influenced externally via an inter-
face, e.g. by:
• Bluetooth remote operation
• Setpoint specification via analogue input AI 1 ... AI 2
• Intervention of building automation via binary input
DI 1, DI 2 or bus communication
Flashes with active twin-head pump connection.
Navigate menus and edit content by turning and press-
ing.
Menu navigation:
• To go back to the previous menu level (briefly press
once).
• To go back to the previous settings (briefly press once).
• Return to the main menu (press and hold 1 x,
> 2 seconds)
Switches the key lock on or off (> 5 seconds) in combin-
ation with the Context button.
Opens the context menu with additional options and
functions.
Switches the key lock on or off in combination with the
Back button* (> 5 seconds).
WILO SE 2021-02