Technical Specifications - DG FLOW Preset Manual De Instrucciones

USER'S MANUAL
ELECTRONIC PRESSURE SWITCH
PRESET is a device that starts
and stops the pump to which
it is fitted, thus replacing
traditional mechanical pressure
switches.
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 pres-

Technical specifications

- Voltage: 230 Volt a.c. / 110 Volt a.c.
- Frequency: 50-60 Hz
- Maximum current: 16A
- Protection grade: IP 65
- Start-up pressure (Pm): 0,8÷9 Bar
- Stop Pressure (Pa): 1 - 9,2 Bar
- Connections: 1"M BSP / 1"M NPT
- Maximum operating pressure: 10 Bar -
- Bursting pressure: 32 Bar
- Weight: 1200 g
- Five digit alphanumeric
backlit lcd
- Safety devices against:
- dry running (automatic restart )
- too frequent start-ups
- overcurrents
Losses
0
Operating conditions
A. Compatible/non compa-
tible fluids
PRESET is suitable for use with
clean water and chemically
non-aggressive liquids. If the
fluid contains impurities, a filter
should be fitted upstream.
B. Environmental conditions
PRESET should not be used
where there is the risk of an
explosion. The temperature
of the location should range
between 0°C and 65°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 RA-
TING value. Higher values may
cause damage to the electronic
sure of the system exceeds the
"stop pressure" (Pa).
The electronics of PRESET
protects the pump against
abnormal running conditions
such as dry running, repeated
start-ups due to leaks in the
system or overcurrents.
Before installing the
product, check that the
RATINGS correspond with
those required.
CODE: 50066/115
V / Hz: 230 / 50 - 60
I max: 16 A
1.5 Bar
P start:
2008
Year:
50 100 150
components. PRESET can only
be used with single-phase
pumps.
Working area
Pm
PRE
Safety regulations
Before installing or using PRE-
SET, 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
B 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-
200 l/min
quence of the use of non-OEM
spare parts, tampering or
improper use.
When starting the installation,
check the following:
To set the running pressure (Pm), the stop pressure
(Pa) and the max. motor current (I max.),
see Configuration paragraph.
Pa
Shut-off pressure
Start-up pressure
IT EN
SET
- 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 topped in the event of an
emergency: press START/STOP.
PRESET is put OUT OF
SERVICE.
Manufactu-
rer's settings
Pa
Pm
Flow rate
ES FR RU
9,2 bar
3,0 bar
2,0 bar
1,0 bar
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