Parker U121V5595 Serie Installations-, Betriebs- Und Wartungsanleitung

INTRODUCTION
This IOM is also subject of a safety manual document
to provide necessary information to design, install,
verify and maintain a Safety Instrumented Function
(SIF) utilizing a solenoid valve. It provides necessary
requirements for meeting the IEC 61508 or IEC 61511
functional safety standards.
Installation/Performance Information
All elements of the appropriate Parker Fluid Control
Division (FCD) Installation, Operating & Maintenance
sheets (IOM's) must be followed before installing,
operating and servicing the valve.
The valve must be operated and installed in
accordance with the operating parameters specified in
the IOM, catalog and/or markings on the nameplate.
This includes the electrical and pressure ratings,
temperature limits and environmental conditions.
User must confirm that the valve meets specific
performance criteria required for Safety Instrumented
Functions.
Installations that comply with Functional Safety per
IEC 61508 should consult the FMEDA Report for data
to establish specific Safety Integrity Levels (SIL).
The valve has met
requirements of Safety Integrity Level (SIL) 3. These
are intended to achieve sufficient integrity against
systematic errors of design by Lucifer. A Safety
Instrumented Function (SIF) designed with this valve
must not be used at
statement without "prior use" justification by end user
or diverse technology redundancy in the design
When the final element assembly consists of many
components (solenoid valve, quick exhaust valve,
actuator, isolation valve, etc.) the SIL must be verified
for the entire assembly using failure rates from all
components. This analysis must account for any
hardware fault tolerance and architecture constraints.
The valve should be operated using clean, dry air;
recommended air quality per ISA-SP7.3S.
Service Information
The valve should be observed for performance during
proof and diagnostic testing. Any indication of reduced
performance, such as an increase in leakage rate,
response time, or required shifting pressure, will
require maintenance
recommended maintenance and service interval is
one year or 100,000 cycles; or after a prolonged
period (approximately six months) of not cycling.
Service conditions may
servicing.
Parker Hannifin Manufacturing Switzerland SA
16 Ch du Fbg-de-Cruseilles
1227 Carouge – Geneva, Switzerland
U121V5595 - U121V5596 – U121V55961D - U121V7595
Parker design process
SIL level higher than the
of the valve. Normal
require more frequent
Installation, Operating & Maintenance
Spool valves series
The recommended minimum operating interval is one
month.
Proof testing and diagnostic testing should be
performed on intervals indicated in the FMEDA report
to maintain the specified SIL capability.
The partial Valve Stroke testing of the safety
Instrumented Function provides a full cycle test of the
solenoid valve. The test itself must be SIL-2 compliant
and performed at a rate at least ten times faster than
expected demand rate.
The time to detect a dangerous failure by partial valve
stroke testing is 730 hours
Any failures affecting functional safety should be
reported to the factory.
When servicing this valve, the user must refer to the
Parker FCD IOM for instructions; original spare parts
must be used when replacing components.
When a valve has been serviced, repaired or if any
maintenance is performed, the valve must be
evaluated for proper function (proof testing).
The mean time to restoration (MTTR) after a safe
failure is 8 hours
PN 493118 PB 407572 - Rev. 4 date: 23.06.2015
Example of U121V
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