English; Technical Features - Interpump Group S3 Mode D'emploi

= ENGLISH =

FLOW RATE
min - max
l/min
10 – 100
g.p.m.
2,6 – 26,4
(USA)
«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 S3 relief valve is a manually-adjustable, pressure-
operated device which, according to its setting, releases the
excess of water when the pressure inside the pump/system
exceeds the adjusted value, thus reducing the pressure. The
normal working conditions can be restored by turning off and then
restarting the system.
3- INSTRUCTIONS FOR INSTALLATION AND PRESSURE
SETTING:
3.1- The installation and the pressure setting must be made by
qualified and authorized 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.
3.2- In order to determine the setting pressure of the S3 valve, it
is necessary to equip the high pressure feeding line of the system
also with a pressure regulator.
3.3- The setting pressure is the pressure at which the valve
opens, thus determining the maximum pressure value that the
system cannot exceed.
IMPORTANT: the value of the setting pressure is
to be determined within the pressure range
stated in the table of technical features.
3.4- Pressure setting:
3.4.1- Connect the S3 valve and the pressure regulator to the
water system.
3.4.2- Unloose the nut Pos.11 and the adjustment screw Pos. 13
of the S3 valve in order to completely release the spring.
3.4.3- Open the gun or the water control device and start the
system. Make sure that the air contained in it is fully ejected.
3.4.4- Slightly screw down the adjustment screw Pos. 13.
3.4.5- Keeping the gun or the water control device open, slowly
increase the pressure in the system by using the pressure
regulator.
3.4.6- Check the pressure value at which the S3 valve opens
releasing the excess of water.

TECHNICAL FEATURES

SETTING PRESSURE
RANGE
-SP-
min - max
6 – 70
60 – 700
870 – 10150
max WORKING
PRESSURE
-WP-
MPa 58
bar 580
p.s.i.
8412
3.4.7- Perform the steps 3.4.4, 3.4.5 and 3.4.6 again until the
desired setting pressure is reached.
3.4.8- When the desired pressure has been reached, open 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.
3.4.9- Once the setting has been accomplished, we suggest
you seal the adjustment screw in order to avoid any
unintentional variation of the pressure and indicate on the
valve itself the actual value of the setting pressure that has
just been determined.
3.4.10- During the normal functioning of the system, the
maximum working pressure (WP) should be kept within approx.
85% of the setting pressure of the valve (SP).
Interpump Group disclaims all responsibility for
any
adjustment of the setting pressure and/or by any
incorrect use of the valve that cannot be
reasonably predicted.
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- To fix the valve, manually screw the R1/2" tapered thread
fitting, then apply another 2-3 turns by means of a spanner to
tighten it completely. If necessary, a proper sealant can be used
in order to ensure the thread seal.
4.2- 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 35 kW (47.5
HP). As shown in the chart, this means using pumps producing a
flow rate of approx. 31.5 l/min. for maximum working pressures
of 58 MPa (580 bar - 8412 psi), and generating a pressure of
approx. 18.5 MPa (185 bar - 2654 psi) for maximum flow rates of
100 l/min.
- -
5
TEMP.
max
°C °F
MPa
bar 60 140
p.s.i.
damages caused by
MASS
kg lbs
0,9 1,98
the inaccurate