10194507A _rev.03
PRESFLO
MULTI
CODE:
V / Hz:
I max:
B
V00103101
~230 / 50-60
16
A
SN 1506003
RU
EN
FR
IT
ES
ELECTRONIC PUMP CONTROLLER
PRESFLO
®
is a device that
starts and stops the pump to
which it is fitted, thus replacing
traditional pressure switch /
surge tank systems.
The pump is started when, as
a tap is turned on, the pressure
within the system drops below
the “start-up pressure” (Pm),
and is stopped when the flow
USER’S MANUAL
rate required is zero or less
than the “shut-off flow rate”
(Qa).
The electronics of PRESFLO
®
protects the pump against
abnormal running conditions
such as dry running, repeated
start-ups due to leaks in the
system or overcurrents.
Technical specifications
Losses
- Voltage: ~ 230 V / ~ 115 V - Frequency: 50-60 Hz
- Current: 12A, max 16A for 3 sec.
- Protection grade: IP 65
- Start-up pressure ( Pm ): 1÷5 Bar (15-70 psi)
- Shut-off flow rate ( Qa ): 2 litres/min (0,5 gpm)
- Connections: 1”M BSP / 1”M NPT
- Operating pressure: 8 bar (120 psi)
- Bursting pressure: 24 bar (350 psi)
- Weight: 1600 g
- Protection against: dry running
( automatic restart),
repeated start-ups,
overcurrents
Before installing
, the product, check
that the RATINGS correspond with those
required.
Operating conditions
A. Compatible/non compa-
tible fluids
PRESFLO
®
is suitable for use
with clean water and chemical-
ly non-aggressive liquids. If the
fluid contains impurities, a filter
should be fitted upstream.
B. Environmental conditions
PRESFLO
®
should not be used
where there is the risk of an
explosion. The temperature
of the location should range
between 0°C and 40°C, and
the humidity should not exceed
90%.
C. Power supply
Make sure that the variation
in the power supply is never
more or less than 10 % of the
RATING value.
Higher values may cause
damage to the electronic
components.
PRESFLO
®
can only be used
with single-phase pumps.
Working area
Flow rate
Pressure
Shut-off flow rate
Start-up pressure
Qa
Pm
Safety regulations
Before installing or using
PRESFLO
®
, read this manual
carefully and thoroughly.
The pump should be installed
and serviced by qualified per-
sonnel, responsible for making
the hydraulic and electrical
connections in compliance with
the relevant regulations.
DGFLOW
®
shall not be held lia-
ble for any damage relating to,
or resulting from, an improper
use of the product, or for any
damage relating to, or resulting
from, servicing or repairs carri-
ed out by unqualified personnel
and/or with non-OEM spare
parts.
The warranty, which is valid
for 24 months from the date
of purchase, will no longer be
applicable should the product
suffer damage as a conse-
quence of the use of non-OEM
spare parts, tampering or
improper use.
When starting the installation,
check the following:
- the power supply is switched
off.
- the power lines can withstand
the maximum current.
- the cable bushings and circuit
board cover have been properly
assembled and secured ( see
Electrical Connections ).
- the power supply is fitted with
regulation earthing and safety
devices.
When servicing the product,
check the following:
- the system is not pressurised
(turn a tap on)
- the power supply is switched
off.
Emergency Stop
When in use, the pump can
be stopped in the event of an
emergency:
press STOP/RESTART.
PRESFLO
®
is put OUT OF
SERVICE.
For no reason
, disassemble
the water accumulator with the
system pressurized.
Cover
Water accumulator
To set the running pres-
sure (Pm) and the max.
motor current (I max.), see
Configuration paragraph.
Water accumulator pressure.
Should be inflated to a value 0,5 bar lower than
the running pressure.
0 50 100 150 200 l/min
0 5 10 15
m H
2
O
Manufacturer’s
settings
Other selectable settings
RU
EN
FR DE
IT
ES
2
l/min (0,5 gpm)
5,0
bar
(75 psi)
2,0
bar
(30 psi)
1,0
bar
(15 psi)
