10183307A_rev.02
0 50 100 150 200 l/min
0 5 10 15
m H
2
O
PRESFLO
CODE:
V / Hz:
I max:
P start:
B
50066/115
~230 / 50 - 60
16
A
1.5
Bar
SN 15060002
CODE:
V / Hz:
I max:
P start:
B
50066/115
~230 / 50 - 60
16
A
1.5
Bar
SN 15060002
RU
EN
FR DE
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).
PRESFLO
®
’s electronics protect
the pump against unsuitable
operating conditions such as
dry running or repeated start-
ups due to leaks.
Technical specifications
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
2
l/min (0,5 gpm)
Red =
Blue =
Yellow =
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 ).
- Power supply network must
be fitted with proper protection
device (fuse or magneto-
thermal relay) upstream of
PRESFLO
®
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 STAND-BY.
Never disassemble
water accumulator
Water accumulator
Losses
- Voltage: ~230 Volt / ~115 Volt
- Frequency: 50-60 Hz
- Current: 10A, max 12A for 3 sec.
- Current: 12A, max 16A for 3 sec.
- Protection grade: IP 65
- Start-up pressure (Pm): 0,8/1,5/2,2 bar
(12/22/32 psi)
- Shut-off flow rate (Qa): 2 litres/min (0,5 gpm)
- Connections: 1” BSP / 1” NPT
- Maximum working pressure: 10 bar (145 psi)
- Bursting pressure: 40 bar (580 psi)
- Weight: 650 g
- Protection against:
- dry running (automatic restart)
- repeated start-ups
- Max room temperature: 40°C
- Max liquid temperature: 55°C
- Type of drive: 1C
- Max manual operations on
push button: 1000
- Max automatic operations
on relay: 100000
- Class 3A PTI
- Pollution degree : 2
- Max rated voltage pulse: 2,5 kV
- 230V 12A for EMC test
- Pressure operating
differential: 10 bar
Before installing
,
the product, check that
the RATINGS correspond
with those required.
2,2
bar (32 psi)
1,5
bar (22 psi)
0,8
bar (12 psi)
