Technical Features - Interpump Group Pratissoli R4090 Mode D'emploi

Max FLOW RATE
MODEL
l/min.
R4090LP 965
R4090HP 833
«Translated from original instructions»
THIS DOCUMENT PROVIDES THE INSTRUCTIONS FOR THE
INSTALLATION, USE AND MAINTENANCE OF THE VALVE,
THEREFORE IT IS AN INTEGRAL PART OF THE VALVE ITSELF
AND MUST BE READ CAREFULLY BEFORE ANY USE AND
KEPT WITH CARE.
STRICTLY COMPLY WITH THE INSTRUCTIONS CONTAINED IN
THIS DOCUMENT IN VIEW OF A SAFE AND EFFECTIVE USE
OF THE VALVE.
FAILURE TO COMPLY WITH THESE INSTRUCTIONS MIGHT
CAUSE EARLY FAULTS AND RESULT IN SITUATIONS OF
DANGER, IN ADDITION TO VOIDING ANY WARRANTY.
1- GENERAL INFORMATION
1.1- The pressure regulator is a manually-adjustable, pressure-
operated device which, according to its setting, limits the
pump/system pressure by conveying the excess of water to the by-
pass.
Moreover, when the outlet flow is blocked, this device totally
releases the flow, thus keeping the pump/system at the adjusted
pressure.
1.2- Since the valve is used in connection with a high pressure
water pump/system, which shall be called hereafter only "system",
installation and use must be suited to the type of system used and
comply with the safety Regulations in force in the Country where
the valve is used.
1.3- Before using the valve, make sure that the system the valve is
used with is certified to comply with the relevant Directives and/or
Regulations.
1.4- Before installing and using the valve for the first time, we
suggest you check that it is undamaged and make sure that the
rated features correspond to the required ones. If this is not the
case, do not use the valve and contact the after-sales service of
Interpump Group for information.
1.5- In order to install the valve correctly, follow the instructions for
the water inlet and by-pass connections, as stated in this instruction
manual and/or on the valve itself.
2- PACKAGE
2.1- Packages must be handled in compliance with the instructions
stated on the packages themselves and/or provided by the
manufacturer.
2.2- In case the valve is not used immediately, it must be stored in
its integral package and placed in areas which are not exposed to
the weather and protected from excessive humidity and from direct
sunlight. Moreover, it is advisable to place wooden pallets or other
types of pallets between the package and the floor, in order to
prevent the direct contact with the ground.
2.3- The package components must be disposed of in compliance
with the relevant laws in force.
2.4- Take great care when lifting and handling the valve during
installation and avoid any sudden accelerations or changes of
direction. Also avoid any excessive oscillations and keep the valve
upright in order to prevent any loss of stability and the possibility of
overturns.
2.5- To lift the valve, use tools such as snap-hooks, straps, ropes,
hooks etc., which must be certified and suited for the mass to be
lifted. The valve mass is stated in the table of technical features.
3- INSTRUCTIONS FOR PRESSURE SETTING:

TECHNICAL FEATURES

Max PRESSURE
g.p.m.
MPa
(USA)
255 22
220 40
-
TEMPERATURE
bar p.s.i. °C
220 3190 40
400 5800 40
3.1- In order to obtain a correct adjustment and consequently a
proper functioning of the valve, always make sure that, when
working at the maximum pressure, the valve by-pass keeps
releasing a quantity of water equal to 5% of the total flow-rate. In
case the flow-rate at the by-pass is close to zero or exceeds 15% of
the maximum flow-rate, this could cause faults, early wear and
result in situations of danger.
The positions mentioned in the following instructions refer to those
shown in the spare parts catalogue (page 3).
3.2- Connect the valve to the water system and follow these steps:
3.2.1- Unloose the nut pos. 27.
3.2.2- Unscrew the screw pos. 30 in order to completely release the
springs.
3.2.3- Open the gun or the water control device and start the
system. Make sure that the air contained in it is fully ejected.
3.2.4- Keeping the gun or the water control device open, start
adjusting the pressure by screwing down the screw pos.1. Alternate
the adjusting operations with a few openings and closings of the
gun or of the control device. When the desired pressure has been
reached, open and close the gun/control device a few times again
in order to stabilize the various components (seals, springs etc.).
Check the pressure value again and correct if necessary.
3.2.5- Screw down the lower nut pos. 27 up to contact and lock it on
the body.
3.2.6- In order to obtain working pressures lower than the maximum
set pressure, unscrew the screw pos. 30.
In case of doubts, do not hesitate to contact the after-sales
service of Interpump Group.
IMPORTANT: During use, never exceed the maximum
values of pressure, flow-rate and temperature as
stated in this document and/or indicated on the
valve.
4- WARNINGS
4.1- The installation and the setting of the maximum pressure must
be made by qualified staff only, who must have the required skills to
handle high pressure systems and be informed of the operating and
safety instructions contained in this document.
4.2- The installer must provide the ultimate consumer with the
proper instructions for the correct use of the system the valve is
used in connection with.
4.3- Use soft and filtered water only. In case of salt water and/or of
water containing solid particles of a size exceeding 360µm, 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/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
-
7
= ENGLISH =
Max
MASS
°F kg
115 37
115 37
lbs
81.5
81.5