Asco 553 Serie Instructions De Mise En Service Et D'entretien

INSTALLATION AND MAINTENANCE INSTRUCTIONS
Monostable series 553 solenoid valves for safety applications
Aluminium or stainless steel body, 1/2" thread – NAMUR interface,
according to IEC standard 61508 (SIL approval)
DESCRIPTION OF THE CERTIFICATION
Versions concerned by the certifi cation, suffi x SL:
Series 553, aluminium or stainless steel body, monostable
(spring return), 3/2 NC (normally closed) function or 5/2, ver-
sion isolated from the outside atmosphere. Versions without
manual override or with impulse-type manual override:
- with 1/2" threaded connection (Do not connect the pressure
supply to the exhaust port 3. The "environmentally-protected"
construction is not adapted for a "distributing" function or use
in NO function. Contact us for functions available in specifi c
versions)
- with NAMUR interface for direct mounting to single acting
(function 3/2 NC) or double acting (function 5/2) pneumatic actua-
tors. The function of the valve is convertible from 3/2 NC to 5/2
by mounting the supplied 13/2 NC or 5/2 interface plate at the
bottom of the valve (fi g. C and D, ref. 1a and 1b). (Do not connect
the pressure supply to the exhaust port 3. The "environmentally-
protected" construction is not adapted for NO function. Contact
us for function available in specifi c version)
The use of any other product is prohibited and does not
constitute a part of this approval.
IEC standard 61508 describes a set of general require-
ments for each phase in the life cycle of a safety system.
Analysis of the reliability achieved by the EXIDA has shown
that these distributors and electrical distributors can be used
in a security management system (SMS) up to and including
SIL 2 at HFT = 0 and up to and including SIL 3 at HFT = 1
with the required HFT level based on route 2H in accordance
with the CEI 61508-2 : 2010 standard.
A summary of the trial results and the reliability data is provided
on pages 35 and 36 of this document. For the installation,
maintenance, testing and commissioning of these valves,
use of the security manual (V9629) is recommended; this is
available on the website 'www.asconumatics.eu'. All indica-
tions and provisions contained in the general installation and
maintenance instructions form the basis of the above-mentioned
documents. To ensure the reliability, all additional provisions
mentioned hereinafter must also be adhered to.
Connect pipes for the required functions in accordance with this
documentation and the port markings on the product.
- Make sure no foreign matter enters the circuit to prevent block-
ing the valve function. Restrict the use of sealing tape or sealing
matter to a minimum.
- These valves are intended for use with clean and dry air or
inert gas. Recommended minimum fi ltration: 50 microns. The
dew point of the fl uid used must be at least -20°C (36°F) below
the minimum temperature to which the fl uid may be exposed.
When using lubricated air, the lubricant must be compatible with
the elastomers used. Instrument air in compliance with ANSI/ISA
standard S7.3 (1975) exceeds the necessary requirements and
is, therefore, an acceptable fl uid for these valves.
- All exhaust ports of the valves and pilots must be protected with
the stainless steel exhaust protectors supplied with the product
(see rep. 3).When used in a pipe connection, the valves must be
protected with (an) appropriate fi lter(s). Connect these exhaust
protectors to port 3 (3/2 NC) or ports 3 – 5 (5/2) of the valves.
The reliability of the valve cannot be guaranteed if an exhaust
protection other than that supplied is used. In this case, please
contact Asco or one of its authorised representatives.
- Maximum working pressure:
- 2 to 10,4 bar
- 2 à 8 bar (195-LISC)
Remember that the product security function is not
guaranteed if the product is fi tted with a manual lock
control which is activated. Do not forget to deactivate
this to restore the product to its security confi guration.
DESCRIPTION
ATEX 94/9/EC versions: See "Special conditions for safe use".
Versions isolated from atmosphere: The internal parts of the
valve are isolated from the outside atmosphere in order to pro-
vide protection in aggressive environments. All the exhaust ports
of the spool valve are pipable, providing better environmental
3/2 NC
5/2
protection, particularly recommended for sensitive areas such
as clean rooms and applications in the pharmaceutical or food
processing industries. It is necessary to connect pipes or fi ttings
to the exhaust ports to protect the internal parts of the spool valve
if used outside or in harsh environments (dusts, liquids etc.).
SPECIAL CONDITIONS FOR SAFE USE
ATEX 94/9/EC: The valve must be connected to ground (ref. F).
Storage conditions: protected from exposure to weather; storage
temperature: -40 C to +70°C ; relative humidity: 95 %
The spool valve must be kept in its original packaging as
long as it is left unused. The protective covers must not be
removed from the connection ports and solenoid operators.
Ambient temperature: -25°C (aluminium), -40 C (stainless steel) to
+60°C
The max. temperature of the fl uid does not exceed the ambi-
ent temperature.
After storage at low temperature, the spool valves must
gradually be brought to operating temperature prior to
pressurisation.
If, in Zone 1, Group IIC, use is made of the 553 series with
integrated pilot, the product must be protected against ambient
air fl ow and friction in order to prevent electrostatic charge on
the synthetic materiel casing. The wearing of dry clothes and/or
friction on the surface of the magnetic head should be avoided
during installation and maintenance.
The spool valves are intended to be operated within the techni-
cal characteristics specifi ed on the nameplate. Changes to the
products may only be made after consulting the manufacturer or
his representative. These solenoid spool valves are designed
to operate with fi ltered air or neutral gas. Do not exceed the
maximum allowable pressure of the valve = 8/10,4 bar. Cau-
tion: observe the minimum pilot pressure of 2 bar. Installation
and maintenance of the valve must be carried out by qualifi ed
personnel only.
• Standard IP65-rated air operated versions or versions for use in
explosive atmospheres caused by gases, vapours, mists or dusts
according to ATEX Directive 94/9/EC. (The zone classifi cation
for this version is stated on the ATEX label, ref. E2).
E2/Safety code: II 2GD IIC X Ta 60°C T85°C (T6).
Compliance with the Essential Health and Safety Requirements
has been assured by compliance with the European Standard
EN 13463-1.
• Solenoid-air operated versions fi tted with solenoid operators:
- IP65 sealed or
- certifi ed for use in explosive atmospheres according to ATEX
Directive 94/9/EC
. Versions with integral pilot, IP65-rated as standard, or for
use in explosive atmospheres II 3D IP65 or ATEX Ex m, em
. Versions with solenoid operators with ASCO mounting pad,
IP65-rated as standard, or for use in explosive atmospheres
II 3D IP65 or ATEX/IECEx Ex d, m, em, ia.
. Versions with pilots with CNOMO E06.05.80 (size 30) or
CNOMO E06.36.120N (size 15) mounting pad, IP 65-rated
as standard, or mounting of pilots for use in explosive atmos-
pheres according to ATEX Ex d or Ex ia. Caution (CNOMO
pilots): Placing the valves into zones (ATEX 1999/92/EC)
is defi ned in fi rst line by the indications on the label (ref.
E2) on the body of each valve.
E2/Safety code: II 2GD IIC X Ta 60°C T85°C (T6).
When assembling this product to a pilot to ATEX 94/9/
EC, take the least favourable category,maximum working
pressure and temperature into account. Compliance with the
Essential Health and Safety Requirements has been assured
by compliance with the European Standards EN 13463-1.
The mounting position for the pilots as shown in fi gures 5/6/7/8/10
and the indicated tightening torques must be observed.
For solenoid operators and pilots to ATEX94/9/EC, the instruc-
tions for use given in the specifi c Installation Instructions
provided with the product must be strictly followed.
2
INSTALLATION AND MAINTENANCE INSTRUCTIONS
GB
ASSEMBLY
!
ATEX 94/9/EC versions: Make sure that all metal or
conductive parts are always interconnected and connected to
earth. The valve body is connected to earth with the fastening
screw (ref. F).
The valves may be mounted in any position.
Treaded ports versions (1/2) (fi g. A, B) :
Mount the valve with two screws (rep. F) (not supplied).
With NAMUR interface versions (fi g C, D) :
Before mounting the spool valve on the operator, it must be
set to the required function :
- Select the interface which corresponds to the required func-
tion : 3/2 NC or 5/2 (rep.1a or 1b).
- Make sure the seal is properly fi tted (rep.7)
- Assemble the interface under the spool valve with the 2
screws supplied. Make sure the indication of the function
is placed on the return side (polarizing slot)
- Fit the two O-rings (rep.9).
- If necessary, fi t the dowel pin on the operator:
• On the 3/2 NC function plate: the Ø 5 dia. hole is at A3/A1.
• On the 5/2 function plate: the Ø 5 dia. hole is at A3/A2.
PNEUMATIC CONNECTION
Depending on the version (3/2 NC or 5/2), one or both stain-
less steel exhaust protectors supplied with each product
must be used.
• Connection of pneumatic pilot version:
G 1/4 or NPT 1/4.
• Connection of pilot exhausts
- Connect the exhaust port Ø M5, G 1/8 ou NPT1/8
• Manual override (rep. 10)
Depending on the version, the products are supplied without
manual override or with impulse-type manual override
for operation without power.
• General recommendations for pneumatic connection
Connect pipes for the required functions in accordance with
this documentation and the port markings on the product.
Make sure that no foreign matter enters the system.
Correctly support and align the pipes to prevent mechani-
cal strain on the valve. When tightening, do not use the
valve as a lever; locate wrenches as close as possible to
connection point. To avoid damage to the equipment, DO
NOT OVERTIGHTEN pipe connections.
• Treaded 1/2 port versions (fi g. A, B):
- Connection of the spool valve:
Connect pipes as indicated on the label:
- 3/2 NC function:
Pressure inlet at port 1 (1/2). Pressure outlet at port 2.
Exhaust at port 3 (1/2).
- 5/2 function:
Pressure inlet at port 1. Pressure outlet at ports 2 and 4.
The exhausts are channelled through the valve to ports 3
and 5.
• Version with NAMUR interface (fi g C, D) :
- Connection of the spool valve
Connect pipes as indicated on the label:
- 3/2 NC function:
Pressure inlet at port 1 (1/2). Pressure outlet at port 2 and
4.
Exhaust at port 3 (1/8).Exhaust from the return operator
spring chambers in the single-acting version is channelled
through the valve to Port 3. It is recommended to protect
Port 5 (if not used) - do not stop up it.
- 5/2 function:
Pressure inlet at port 1 (1/2). Pressure outlet at ports 2 and 4.
The exhausts are channelled through the valve to ports
3 and 5 (or 1/2).
502588-001
Monostable series 553 solenoid valves for safety applications
Aluminium or stainless steel body, 1/2" thread – NAMUR interface,
according to IEC standard 61508 (SIL approval)
ELECTRICAL CONNECTION
Before any intervention, turn off the electrical current to
power off the components.
All screw terminals must be tightened to the appropriate
torque prior to operation.
Make the connection to earth for versions > 48 V.
• IP65-sealed integral pilot version (fi g. A):
Mount the coil on the tube (rotatable through 360°) and
then the removable ISO 4400/EN 175101-803A con-
nector (cable dia 6-10 mm) rotatable by 90° (3 pins: 2 +
earth).
• Version with solenoid heads with ASCO interface:
See additional installation instructions supplied with every
solenoid head.
• Version with CNOMO pad mounting: See additional
installation instructions supplied with every pilot valve.
• General recommendations:
Electrical connections must be made by qualifi ed personnel
and according to applicable local standards and regulations.
Caution:
- Depending on the voltage, electrical components must be
grounded according to local standards and regulations.
Most valves are equipped with coils designed for con-
tinuous duty. To prevent the risk of personal injury, do
not touch the solenoid operator which can become hot
under norrmal operating conditions. If the valve is easily
accessible, the installer must provide for protection against
accidental contact of the solenoid operator.
!
Prior to any maintenance work or putting into opera-
tion, power off, depressurise and vent the valve to prevent
the risk of personal injury or damage to equipment.
ATEX versions: Strictly follow all procedures recom-
mended by Directive 99/92/EC and associated standards.
• Cleaning
Maintenance of the valves depends on the operating con-
ditions. They must be cleaned at regular intervals. During
servicing, the components must be checked for excessive
wear. The components must be cleaned when a slowing
down of the cycle is noticed even though the pilot pressure
is correct or if any unusual noise or a leak is detected.
• Sound emission
The emission of sound depends on the application, medium
and type of equipment used. The exact determination of
the sound level can only be made by the user having the
valve installed in his system.
• Preventive maintenance
- Operate the valve at least once a month to check its func-
tion.
- If problems arise during maintenance or in case of doubt,
please contact ASCO Numatics or one of its authorised
representatives.
• Troubleshooting
- Incorrect outlet pressure: Check the pressure on the
supply side of the valve; it must correspond to the values
indicated on the nameplate.
Caution: observe the minimum pilot pressure value of 2
bar.
To avoid personal injury or damage to equipment, check
that the valve operates correctly before putting it back into
operation.
• Spare parts
Coils are available as spare parts.
If necessary, replace the entire valve.
3
3/2 NC
GB
5/2
MAINTENANCE
502588-001