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The thermal magnetic circuit breaker must be correctly sized
(see Electrical Characteristics).
3.2 Configuration of the Integrated Inverter
The system is configured by the manufacturer to satisfy most installation
cases operating at constant pressure. The main parameters set in the fac-
tory are:
• Set-Point (desired value of constant pressure); SP = 3.0 bar/43.5 psi.
• Reduction of pressure to restart RP = 0.3 bar / 4.3 psi.
• Anti-cycling function: Disabled.
However, these parameters and others can be set by the user according to
the system. See par. 5-6-7 for the specifications.
For the definition of the parameters SP and RP, the pressure at
which the system starts has the value:
Pstart = SP – RP
default configuration
The system does not work if the utility is at a height higher than the equiva-
lent in metres of water column of the Pstart (consider 1 bar = 10 m water
column): for the default configuration, if the utility is at a height of at least
27m the system does not start.
3.3 - Priming
The priming of a pump is the phase during which the machine attempts to
fill the body and the suction pipe with water. If the operation is successful
the machine can work regularly.
Once the pump has been filled (par. 2.1.2, 2.2.3) and the device has been
configured (par. 3.2), it is possible to connect the electric power supply
after having opened at least one utility on delivery for the first 10 seconds.
If a flow of water is detected in delivery, the pump is primed and starts its
regular work. This is the typical case of installation below head (par. 2.1.2,
2.2.3). The utility opened in delivery from which the pumped water is com-
ing out can be closed.
If a regular flow in delivery is not detected after 10 seconds, the system
asks for confirmation to enter the priming procedure (typical case of instal-
lation above head pa 2.1.2, 2.2.3). Or:
49
For example: 3.0 – 0.3 = 2.7 bar in the
When "+" is pressed the pump enters the priming procedure: it starts work-
ing for a maximum time of 5 minutes during which the safety block for dry
operation is not tripped. The priming time depends on various parameters,
the most influential of which are the depth of the water level from which it is
drawing, the diameter of the suction pipe, the water-tightness of the suction
pipe. On condition that a suction pipe is used that is no smaller than 1" and
that it is well sealed (with no holes or joins from which it can take in air), the
product has been studied to manage to prime in water conditions up to 8m
in depth in a time of less than 5 minutes. As soon as the product detects
a regular flow in delivery, it leaves the priming procedure and starts its
regular work. The utility opened in delivery from which the pumped water is
coming out can be closed. If after 5 minutes of the procedure the product
is still not primed, the interface display sends a failure message. Discon-
nect the power supply, load the product adding new water, wait 10 minutes
and repeat the procedure from the moment you put the plug in the socket.
Press "-" to confirm that you do not want to start the priming procedure. The
product remains in alarm status
Operation
Once the electropump is primed, the system starts regular operation ac-
cording to the configured parameters: it starts automatically when the tap
is turned on, supplies water at the set pressure (SP), keeps the pressure
constant even when other taps are turned on, stops automatically after
time T2 once the switching off conditions are reached (T2 can be set by the
user, factory value 10 sec).
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