max = 48 m (160 ft)
Preliminary checks
Take the PRESFLO
®
out of
the packaging and check the
following:
- check for damage,
- check the RATINGS correspond
with those required,
- that the cable bushings and
screws are in place,
- that PRESFLO
®
’s inlets and
outlets are clean and free of any
packaging materials,
- that the check valve moves
smoothly.
Hydraulic connections
the joint in two pieces allows ra-
pid connection to the sy-
stem.
DO NOT apply se-
alant inside the 2-piece
joint because it already
has an internal o-ring.
Orientation
PRESFLO
®
can be installed at
any angle depending on the flow
direction, as indicated in the
diagrams.
Position
PRESFLO
®
can either be fitted
directly to the pump outlet or
anywhere along the delivery
line. Never install taps between
the pump and PRESFLO
®
. Do
not install a non-return valve
between PRESFLO
®
and the taps,
meanwhile it is possible, although
not necessary, to install a non-
return valve on the suction piping
of the pump.
Installation
Attention
The pressure applied
by the water column above
PRESFLO
®
must not exceed that
of the pump start-up pressure
(Pm). If, for example, PRESFLO
®
is installed at a height 20 metres
(65 ft) below that of the highest
tap in the system, the pressure
detected by PRESFLO
®
will be
approximately 2 bar (30 psi).
A model with Pm = 2.5 – 35 psi
bar should, therefore, be installed
in order to guarantee that the
pump is started when a tap is
turned on.
Attention
The maximum pressure
produced by the pump
must be at least 0.5 bar (7 psi)
higher than the start-up pressure
(Pm). If the pressure produced by
the pump is too low, PRESFLO
®
will stop the pump and indicate a
‘dry running’ error message.
First start-up
Priming the pump
For instructions on how to
prime (fill) the pump, see the
pump manual.
Attention
PRESFLO
®
is fitted with a
check valve: do not use the
PRESFLO
®
’s outlet to fill the
pump for priming.
Switching the pump on
The red (Power On) LED lights
up; PRESFLO
®
instantly detects
that there is no
pressure within the system and
starts the pump
(the green ‘Pump
On’ LED lights up).
If, within 15 secon-
ds of starting up,
PRESFLO
®
does not detect the
correct priming of
the pump, it stops the pump
and indicates a ‘dry running’
error message.
Attention
When the pump is started for
the first time, it may have to
be run for longer in order to
complete the priming
procedure.
Press the STOP/RE-
START button
to restart the
pump and
complete the
priming procedure.
NOTE 1 - DRY RUNNING
= there is no flow and the pressure is lower
than that of the pump start-up pressure (Pm). It occurs when there is no
water. After 15 seconds PRESFLO
®
stops the pump and indicates an ERROR
message. PRESFLO
®
AUTOMATICALLY tries to resume NORMAL SERVICE
at intervals of increasing time (1, 15, 30, 60 minutes and successively once
every hour - 24 H for AU/NZ - ). If PRESFLO
®
detects any pressure and/or
flow, NORMAL SERVICE is resumed, otherwise, the pump is stopped again
until the next attempt is made. A MANUAL attempt to resume NORMAL
SERVICE can be made at any time.
NOTE 2 - FREQUENT START-UP
= the repeated stopping and starting of
the pump at intervals of less than 1 minute from each other. This occurs
when the flow rate is less than 2 litres/min. This may cause damage to the
pump. In event of small leaks (dripping), PRESFLO
®
’s water accumulator
guarantees that the pump starts/stops at time intervals of over 1 minute
(less than 60 starts/hour) and that FREQUENT START-UP errors do not occur.
In the event of a major leak or extended use at excessively low flow rates
(less than 2 litres/min), the pump may be started/stopped as often as once
every few seconds, putting the pump at risk of damage. In this case, after
about 40 minutes, PRESFLO
®
stops the pump for the following 30 minutes
(in order to let it cool down) and indicates an ERROR message. If the time
interval between the starts-stops is more than 10 seconds (and therefore
poses less of a risk to the pump), PRESFLO
®
will allow the pump to be
used for more than 30 minutes. Once that enough time has passed to allow
the pump to cool down it is restarted AUTOMATICALLY. The pump may be
restarted MANUALLY any time.
NOTE 3 - OVERCURRENT
= electric absorption of the pump (in Ampere)
exceeding the max. allowed (I max). By means of the configuration, it is
possible to set the max. current allowed (I max). During the start-up phase
of the pump PRESFLO
®
allows for a few seconds the current to exceed the
Imax value. If the absorptions remain above the set Imax value, PRESFLO
®
stops the pump to avoid damaging the motor and signals an anomaly.
PRESFLO
®
will not automatically restart the pump. The pump may be
MANUALLY restarted at any moment. Should the problem persist an anomaly
will again be signalled. The manual restart can be repeated several times
since PRESFLO
®
does not limit the number of attempts.
NOTE 4 - SHUT-OFF FLOW RATE
= Flow rate (Qa) of around 2 litres/min
(0,5 gpm) below which PRESFLO
®
stops the pump.
Motor
Line
Nut
Seal
Cable bushing
Attention!
The cable
bushings and circuit board
cover must be properly
assembled and secured
in order to guarantee IP
65 grade protection of the
electrical components.
Electrical con-
nections
The electrical
connections
should be made
as indicated in the
diagram which
can also be found
on the inside of
the circuit cover.
