DAB Esybox Serie Instructions Pour L'installation Et L'entretien page 42

– Face A: a door allows access to the Technical Compartment. The door can be removed by inserting 2 fingers in the rubber grips, squeezing
and rotating the door around the hinges on the side opposite the grips (see Fig.2). To put the door back in place, insert the hinges in their slots
and close the door until it clicks.
– Inside the technical compartment you can access (see Fig.3).
– Face B: a removable screw cap gives access to the non return valve (see par. 12.3). Remove it only in the case of maintenance by skilled
personne.
– Face C: the 4 brass threads form the seat for the 4 support feet in the case of vertical installation. The two 1" screw caps can be removed to
make the connections towards the system, depending on the installation configuration you want to adopt. If applicable, connect to the
connection marked "IN" the system from which you want to draw water (well, cistern,...) and connect the delivery system to the connection
marked "OUT". There is also a ventilation grid.
– Face D: removing the 1" cap allows access to a second delivery connection which can be used at the same time or alternatively to the one
marked "OUT" of face C. The power supply cable is for connection to the power mains.
– Face E: the 4 brass threads form the seat for the 4 support feet in the case of horizontal installation. The 1" cap has the main function of
emptying the system. There are also 2 ventilation grids.
– Face F: as indicated by the label to be removed, the 1" cap has a dual function: in the case of horizontal installation, the outlet that is closed
by the cap acts as the system's loading door (see below "loading operations", par. 4.2.3); in the case of vertical installation, the same outlet
can act as the input hydraulic connection (exactly like the one marked "IN" on face C and as an alternative to it). The user interface panel is
composed of a display and a keyboard and its function is to set the system, query its status and communicate any alarms. The system can be
installed in 2 different configurations: horizontal (Fig.4) or vertical (Fig.5).
3.1 Description of the Integrated Inverter
The electronic control integrated in the system is of the type with inverter and it makes use of flow, pressure and temperature sensors, also
integrated in the system.
By means of these sensors the system switches on and off automatically according to the utility's needs and it is able to detect conditions of
malfunction, to prevent and indicate them.
The Inverter control ensures different functions, the most important of which, for pumping systems, are the maintaining of a constant pressure
value in delivery and energy saving.
– The inverter is able to keep the pressure of a hydraulic circuit constant by varying the rotation speed of the electropump. In op-eration without
an inverter the electropump is unable to modulate and, when there is an increase of the request for flow, the pressure necessarily decreases,
or vice versa; this means the pressures are too high at low flow rates or too low when there is an increased request for flow.
– By varying the rotation speed according to the instantaneous request of the utility, the inverter limits the power supplied to the electropump to
the minimum necessary to ensure that the request is satisfied. Instead, operation without an inverter contem-plates operation of the
electropump always and only at maximum power.
The system is configured by the manufacturer to satisfy the majority of installation cases, that is:
– Operation at constant pressure;
– Set-Point (desired value of constant pressure):
– Reduction of pressure to restart:
– Anti-cycling function:
ENGLISH
Figure 3
Figure 4
SP = 3.0 bar
RP = 0.3 bar
Disabled
40
Figure 2
1. Valve of the expansion vessel;
2. Technical data plate;
3. Rapid Guide;
4. Motor shaft;
5. Accessory tool;
6. Filling cap (only for vertical configuration).
Figure 5