IE/CDC3-CD3-CX3-CXQ3-INTRO/02/2015
Type of system
Type of valve
Oil ļ¬ltration recommendations
Cleanliness class
recommended
Absolute
ļ¬ltration
micron rating
( ** )
ISO 4406 : 1999
NAS 1638
( * )
Systems or components operating at
HIGH PRESSURE > 250 bar (3600 psi)
HIGH DUTY CYCLE APPLICATIONS
Systems or components with LOW
dirt tolerance
18 / 16 / 13 7 - 8 5
Systems or components operating at
MEDIUM / HIGH PRESSURE
Systems and components with
moderate dirt tolerance
19 / 17 / 14 9 10
Systems or components operating at
LOW PRESSURE < 100 bar (1500 psi)
LOW DUTY CYCLE APPLICATIONS
Systems and components with GOOD
dirt tolerance
20 / 18 / 15 10 - 11 20
TECHNICAL INFORMATION
Type SI units Alternative units Conversion factor
Force
Newton (N) [kgm/sĀ²]
Kilogram force (kgf) 1 kgf = 9.807 N
pound force (lbf) [lbf/sĀ²] 1 lgf = 4.448 N
Length
millimeter (mm) [10 m] inch (in) 1 in = 25.4 mm
meter (km) [1000 m] yard (yd) [3ft] 1 m = 1.0936 yd
kilometer (km) [1000 m] mile (mile) [1760 yd] 1 mile = 1.609 km
Torque
Newton meter (Nm) pound force.feet (lbf.ft) 1 lbf.ft = 1.356 Nm
Power
kiloWatt (kW) [1000 Nm/s]
horsepower (hp) 1 kW = 1.341 hp
metric horsepower (CV) 1 kW = 1.36 CV
Pressure
MegaPascal (MPa) [ N/mmĀ²]
bar 1 MPa = 10 bar
psi (lbf/lnĀ²) 1 MPa = 145 psi
ton/f/lnĀ² 1 ton/f/lnĀ² = 15.45 MPa
Flow rate
liter/min (l/min)
UK gal/min 1 UK gal/min = 4.546 l/min
US gal/min 1 US gal/min = 3.785 l/min
Temperature
Degrees Celsius (Ā°C) Farenheit (Ā°F) 1Ā°F = 1.8 Ā°C+32
Ambient temperature range: -25Ā°C to +60Ā°C
Fluid temperature range (NBR seals): -25Ā°C to +75Ā°C
Thermal shocks can affect the performance and the expected life of the prod-
uct, hence it is necessary to protect the product from these conditions.
WORKING TEMPERATURES
SEALS
O-rings made in Acrylonitrile Butadiene (NBR) are normally ļ¬tted on the
valves. The backup rings that protect the O-rings are also made in NBR, or
sometimes PTFE. Both the O-rings and the backup rings are suitable for the
working temperatures mentioned above.
In the case of ļ¬uid temperatures > 75Ā°C, FKM seals must be used (identiļ¬ed
with āV1ā variant).
CONVERSION CHART
* Contamination class NAS 1638: it is determined by counting the total particles of
different size ranges contained in 100 ml of ļ¬uid.
** Absolute ļ¬ltration: it is a characteristic of each ļ¬lter, it refers the size (in micron) of
the largest sperical particle wich may pass through the ļ¬lter.
Table 2: Reccomanded contamination level.
Solenoid valves coils are designed to operate safely in the voltage range of
Ā±10% of nominal voltage at max. 60Ā°C ambient temperature. The combination
of permanent overvoltage and very hot temperatures can stress the solenoid.
Therefore always a good heat dissipation and voltage level has to be assured.
Faulty coils may only be replaced by new, interchangeable, tested compo-
ELECTRICAL POWER SUPPLY
The mounting surface must feature surface quality speciļ¬ed in data sheet of
the valve: for example for Cetop valves generally is required Ra ā¤ 1.6Āµm and
ļ¬atness ā¤ 0.03 mm over 100 mm length. Normally in cartridge valve for sea-
ling diameters of the cavities, is required roughness Ra ā¤ 1.6Āµm. The surfaces
and openings in the assembly plate must be free from impurity or dirt.
Make sure the O-Rings ļ¬t correctly in their seats.
Fixing screws must comply with the dimensions and the strength class spe-
ciļ¬ed in the data sheet and must be tightened at the speciļ¬ed tightening
torque.
Complete the electrical wiring. For circuit examples and pin assignments, see
the relevant datasheet.
INSTALLATION
nents in original-equipment quality.
Before removing a coil, voltage must be disconnected.
When replacing the coil, be aware to insert O-Rings in order to avoid the
entrance of water.
Observe the functional limits indicated in the technical catalogue
On a periodic basis and based on the conditions of use, check for cleanliness,
state of wear or fractures and correct performance of the valve.
If the O-rings are damaged, replace them with those supplied by the manu-
facturer.
To assure the best working conditions at all time, check the oil
and replace it periodically (after the ļ¬rst 100 working hours and then after
every 2000 working hours or at least once every year).
Attention: all installation and maintenance intervention must be performed
by qualiļ¬ed staff.
USE AND MAINTENANCE
TRANSPORT AND STORAGE
The valve must be handled with care to avoid damage caused by impact,
which could compromise its efļ¬ciency.
In the case of storage, keep the valves in a dry place and protect against dust
and corrosive substances.
When storing for periods of more than 6 months, ļ¬ll the valve with preserving
oils and seal it.
For the general warranty and supply conditions, please consult the speciļ¬c
sales contract or the āGeneral terms and conditions of saleā document IOP
7-2-05. Downloaded from the website: www.breviniļ¬uidpower.com
WARRANTY AND SUPPLY CONDITIONS
3
INDEX