Pratissoli SV12 Mode D'emploi page 8

install it by the component that you wish to
protect most from pressure peaks.
4- WARNINGS
4.1- The installer must provide the ultimate consumer
with the proper instructions for the correct use of the
system the valve will be used in connection with.
4.2- The fittings used to connect the valve to the system
must be suited to the valve performance features.
4.3- Use soft and filtered water only. In case of salt
water and/or of water containing solid particles of a size
exceeding 20µm, the internal components of the valve
will be subject to quick wear; furthermore, this might
compromise the correct functioning of the valve.
Addition agents can be used in the water, provided that
they are delicate, biodegradable and always complying
with the Regulations in force in the Country where the
valve is used.
4.4- In the systems for hot water production,
the temperature of the liquid that comes into
contact with the valve must always be lower
than the value stated in this instruction
manual and indicated on the valve itself.
Avoid the
overheated water.
4.5- Before operating the system, it is advisable to start
it for a preliminary test run in order to check that the
system is properly installed.
4.6- IMPORTANT: Do not obstruct or
cover the water discharge area of the
valve in any way . Do not try and convey
the discharged water; instead, always
release in the atmosphere. Failure to
comply with these simple instructions
will result in a reduced safety of the
system.
4.7- In order to optimize the pump-valve coupling, it is
necessary to keep the valve operation range, as a
function of the pump pressure and flow rate, within a
maximum power of 147 kW (200 HP). As shown in the
chart, this means using pumps producing a flow rate of
approx. 54 l/min. for maximum working pressures of
150 MPa (1500 bar-21755 psi), and generating a
pressure of approx. 80 MPa (800 bar-11600 psi) for
maximum flow rates of 100 l/min.
formation of steam
IMPORTANT: For a correct functioning of
the valve, do not use minimum flow rates
that are below the values as stated
hereafter:
Setting pressure SP
(MPa)
from 64 to 102
from 102,1 to 180
4.8- Should the relief valve open, turn off the system
and find out what is the cause of the pressure increase.
5- MAINTENANCE
5.1- Any maintenance and/or repair must be carried out
by Interpump Group only.
5.2- We suggest you check, at least every 2
years or after reaching 500 working hours
of the system, that the valve opens
correctly
correspondence with the setting pressure.
5.3- The valve is entirely made of non-toxic and safe
materials; however, in case of disposal, we suggest you
or
do not disperse it in the environment but take it to an
authorized disposal centre or contact the nearest
INTERPUMP GROUP Authorized Service Centre.
IMPORTANT: The valve shall not be
tampered with for any reason and/or used
for any purpose other than the use it has
been designed for. In case of tampering,
the
responsibility as to the valve functioning
and safety.
6- WARRANTY CONDITIONS
6.1- The period and conditions of warranty are specified
in the purchase contract.
6.2- Warranty is voided in case the valve is used for
improper purposes, used at higher performances than
the rated ones, repaired with non-original spare parts or
if it turns out to be damaged due to the non-compliance
with the operating instructions or to unauthorized
tampering.
Copyright
The content of these operating instructions is property of Interpump
Group.
The instructions contain technical descriptions and illustrations that
cannot be copied and/or reproduced, entirely or in part, nor distributed to
third parties in any form and without in any case authorized written
consent of the owner.
Offenders will be prosecuted according to the laws in force and proper
legal actions will be instituted against them.
The information contained in this document may be modified without notice.
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Minimum flow rate
(l/min)
in order to
manufacturer disclaims
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12
verify the
all