Pratissoli S1520 Mode D'emploi page 7

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 formation of steam or
overheated water.
IMPORTANT: When the temperature of the liquid is
close to the
temperature of the valve body is only slightly
inferior. Therefore, take care in case of contact with
the hot surfaces.
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: The discharge port must be
kept clear, i.e. with no narrowing or throttling,
so that when the valve is open, the water can
flow out of the system without generating outlet
pressure.
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 345 kW (469
HP). As shown in the chart, this means using pumps producing
a flow rate of approx. 120 l/min. for maximum working pressures
of 150 MPa (1500 bar - 21750 psi), and generating a pressure of
approx. 40 MPa (400 bar- 5800 psi) for maximum flow rates of
241 l/min.
4.8- Should the safety valve open, turn off the system and find
out what is the cause of the pressure increase.
4.9- Warning: if the valve is used at a low temperature involving
the risk of frost, make sure that there is no ice formation inside
and/or that the valve is not blocked before using it.
maximum value, the
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 in order to verify
the 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 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,
responsibility as to the valve functioning and
safety.
6- WARRANTY CONDITIONS
outside
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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the manufacturer disclaims all