Activation Of The Set; Regulating The Rated Current Of The Pumps (Imax), Set Point (Sp) And Differential Restarting Pressure (Dp); System Operation; Pressure Switches - DAB E.Box Plus Instructions Pour L'installation Et La Maintenance

5.12

Activation of the set

To activate the set it is necessary to enable the pumps. During the first configuration, for safety's sake, the pumps are disabled
and are OFF. To change to automatic mode, just briefly press the
Enabling P1 and P2.
5.13

Regulating the rated current of the pumps (Imax), Set point (SP) and differential restarting pressure (DP)

With a straight tip screwdriver, position the indices in the centre of the graduated scales, shown in Figure 16 Regulating: Imax, SP and DP, so
that:
Imax indicates the rated current of the installed pumps, which you can find on the pump data plate.
•
SP indicates the desired set point pressure.
•
DP is the pressure variation, in percentage of the set point, necessary to restart the pumps.
•
Attention, the differential restarting pressure is calculated as SP * DP. If the set point is 4 bar and DP is 50%, the pressure differential
RP is 2 bar.
5.14

System operation

Pressure switches:

The operating logic is the following:
P1
P2
Pressure switch connected to input B starts and stops Pump 1
•
Pressure switch connected to input C starts and stops Pump 2
•

Figure 15: Enabling P1 and P2.

Figure 16: Regulating: Imax, SP and DP

Pressure boosting operation with pressure switches
Start
Pressure switch B = CLOSED
Pressure switch C = CLOSED

Table 2: Pressure boosting operation with pressure switches

ENGLISH
buttons on the pumps P1 and P2. As shown in Figure 15
Stop
Pressure switch B = OPEN
Pressure switch C = OPEN
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