Table des Matières
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ENGLISH =
FLOW RATE
MODEL
l/min.
min-max
R2
20-230
R2L
«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- Only R2L version It is possible to cut in (ON) or to cut out (OFF)
the adjusted pressure by shifting the control lever pos. 34 downwards
or upwards respectively. Moreover, when the lever is up (OFF
position), it is possible to start the pump at zero pressure, i.e. without
the motor being under stress.
2- WARNINGS:
2.1- To ensure the tightness of the fittings used to connect the valve to
the system, interpose a metal washer with a rubber ring or insert an
appropriate sealing on the thread and tighten them to the torque
indicated in the table.
THREADING
G1"
G3/4"
G1"1/4
2.2- 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 60 kW (81.5 HP). As shown
in the chart (Tav.1) , this means using pumps producing a flow rate of
approx. 150 l/min. for maximum working pressures of 21 MPa (210
bar - 3045 psi), and generating a pressure of approx. 13.5 MPa (135
bar-1958 psi) for maximum flow rates of 230 l/min.
3- INSTRUCTIONS FOR PRESSURE SETTING:
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 5 for R2 – page 6 for R2L).
3.2- Connect the valve to the water system and follow these steps:
3.3- Shift the lever pos. 34 downwards in the ON position (only for
R2L version).
3.4- Unloose the nut and the lock nut pos. 3.
TECHNICAL FEATURES
Max PRESURE
g.p.m.
(USA)
MPa
bar
min-max
5.2-61
21
210
TORQUE [Nm]
200 ± 5%
120 ± 5%
300 ± 5%
Max TEMPERATURE
p.s.i.
°C
3045
85
3.5- Unscrew the handwheel pos. 1 in order to completely release the
springs.
3.6- Open the gun or the water control device and start the system.
Make sure that the air contained in it is fully ejected.
3.7- Keeping the gun or the water control device open, start adjusting
the pressure by screwing down the handwheel 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.
3.8- Screw down the lower nut pos. 3 up to contact with the body.
Lock the two nuts pos. 3 by tightening the upper nut to the lower nut.
3.9- In order to obtain working pressures lower than the maximum set
pressure, unscrew the handwheel pos. 1.
In case of doubts, do not hesitate to contact the after-sales
service of Interpump Group.
IMPORTANT:
maximum
temperature as stated in this document and/or
indicated on the valve.
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.
~ 9 ~
MASS
°F
kg
185
5.3
During
use,
never
values
of
pressure,
flow-rate
lbs
11.7
exceed
the
and
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