Electrical Connection; Starting Up - DAB 2 JET 102 M Instructions De Mise En Service Et D'entretien

3.2. Ensure that the system pipes are independently supported and do not weigh down on the set manifolds so as
to avoid deformation or breaking of any of its components (fig.2).
It is also advisable to insert vibration-damping couplings on the system manifolds.
3.3. Make the intake section following all the precautions necessary to keep load losses to a minimum and to avoid the
formation of air pockets, for example:
a) Position the set as close as possible to the power supply source.
b) Consider a suction pipe diameter never smaller than that of the manifold.
c) Lay the suction pipe horizontally or sloping slightly upwards towards the set. (fig.3).
d) Avoid using elbows or couplings that cause sudden changes in direction. If necessary, use bends with a wide radius.
e)
Avoid the "siphon" effect at intake: it risks unpriming the pumps!
3.4. Ensure that the characteristics of the water supply source are in proportion to those of the set installed.
a) SUCTION FROM A WELL ( PUMP ABOVE HEAD ): It is advisable to use protection against dry operation to
prevent the set from operating in abnormal conditions.
b) SUCTION FROM A TANK ( PUMP BELOW HEAD OR ABOVE HEAD ): It is advisable to protect the pump
against dry operation, for example using float switches.
c) DIRECT CONNECTION TO THE MAINS: If the pressure could fall to values that are too low, it is advisable to fit
a minimum pressure switch on intake to protect the set.
Dry operation damages the electropumps.
4.

ELECTRICAL CONNECTION

CAUTION! ALWAYS FOLLOW THE SAFETY REGULATIONS!
4.1. The electrical installation must be carried out by a qualified, skilled electrician (see point
2.1.) in compliance with the Safety Regulations in force in the country where the product is
installed.
4.2. Check the power supply voltage and frequency (fig.4).
Values differing from those on the motor plate could cause irremediable damage.
4.3. Connect the leads of the power supply cable to the terminal board on the control panel, giving priority to
the earth lead.
For the wiring diagram of the control panel and the respective informative notes, see the enclosed documentation.
5. STARTING
To start the set correctly, perform the procedure below following the sequence indicated:
5.1.
Perform the following operation without switching on the power to the panel.
Check that the moving parts turn freely. To do this, remove the fan cover and, if necessary, the fan; then turn the shaft with
a suitable tool (screw driver, offset adjustable spanner, etc.). (fig. 5)
If it is blocked, tap lightly with a hammer on the end of the tool, then try to turn the shaft again.
5.2.
Perform the following operation without switching on the power to the panel.
Prime the set as follows:
a) Slowly pour in clean water through a sleeve of the suction manifold, keeping open the filling cap (ref.25) of one of
the electropumps to allow the air inside to get out, until the manifold is filled (fig.6/I).
b) Slowly pour in clean water through a sleeve of the delivery manifold (for example the one connected to the
aquabox), until water comes out of the pump filling hole from which the tap has previously been removed. (fig.6/II)
ENGLISH
23