Important - Pratissoli R3 HP Mode D'emploi

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/or
indicated on the valve itself. Avoid the formation
of steam or overheated water.
IMPORTANT: When the temperature of the liquid
is close to the maximum value, the outside
temperature of the valve body is only slightly
inferior. Therefore, take care in case of contact
with the hot surfaces.
4.5- After use and/or before performing any operation on the
system or on the valve, release the pressure by using the
adjustment knob/screw and opening the gun or the control
device for a few seconds. The jet created by the residual
pressure must be directed downwards in order to avoid
damages or dangers.
4.6- For safety reasons, it is advisable to equip the high
pressure feeding line of the system also with a relief or safety
valve duly adjusted.
4.7- To connect the valve to the system it is preferable to use
flexible hoses fitted in a way that they do not form 90°
elbows, throttlings or siphons which could include harmful air
bubbles. The inside diameters of the hoses and fittings must
be equal to the correspondent inside diameters of the inlet,
by-pass and outlet threads of the valve. Moreover, it is
necessary to correctly choose the type of hose depending on
the rated pressure and flow-rate; the hoses must always be
used within their operation limits as stated by the
manufacturer and indicated on the hoses themselves.
4.8- Tighten the fittings as follows:
G1 fitting – torque wrench setting 310 Nm ±5%.
In order to ensure the seal, fit a metal washer with a rubber
ring between the fittings, or use a proper sealant on the
thread.
4.9- Always connect the valve by-pass fitting to a hose, in
order to avoid the excessive noise caused by the water
outflow through the by-pass without hose.
4.10- 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.
R3HP
4.11- 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
150 kW (205 HP). As shown in the chart (pag. 4) , this means
using pumps producing a flow rate of approx. 174.5 l/min. for
maximum working pressures of 45 MPa (450 bar - 6527 psi),
and generating a pressure of approx. 23 MPa (230 bar – 3336
psi) for maximum flow rates of 341 l/min.
4.12- WARNING: If the valve is used at low temperature
involving the risk of icing, make sure that it is not freezed
inside and/or it is not blocked before using it.
5- MAINTENANCE
5.1- Maintenance and repair must be carried out by qualified
and authorized staff only. Before any operation, make sure
that the valve and the system are shut down and made
unusable.
5.2- A correct maintenance helps extend the working life and
grants a better performance of the valve.
5.3- From time to time, it is necessary to check that the valve
is clean outside, and that there is no sign of leakage and/or
malfunctioning. If necessary, replace the involved parts. In
case of doubts, contact the after-sales service of Interpump
Group.
5.4- Replace the valve parts with original spare parts
only.
IMPORTANT: After maintenance, make sure
that the valve is re-assembled correctly and
that the initial conditions are restored. Comply
with the torque wrench setting values and set
the pressure again as described above.
5.5- 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
INTERPUMP
Centre.
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 manufacturer disclaims all 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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GROUP Authorized
nearest
Service