Asco 552 Series User Manual

Page 7 of 7
©ASCO, L.P. 160 Park Avenue, Florham Park, New Jersey 07932 www.asco.com
I&M No V 9629 R9
All Ri
g
hts Rese
r
ved
4.3 Repair and replacement
According to section 7.4.7.4 of IEC 61508-2 a useful lifetime based on experience, should be assumed.
General field knowledge suggests that most solenoid valves have a useful life of 3 to 10 years, but may be
longer depending on the valve series and other factors.
It is
the responsibility of the end user to establish a preventative maintenance process to replace all solenoids
before the end of the useful life.
4.4 ASCO Notification
Any failures that are detected and that compromise functional safety should be reported to ASCO Valve.
Please contact ASCO customer service.
5 ASCO Solenoid Pilot Valves Covered
Select ASCO valves from the following series have been evaluated per IEC 61508 parts 1 and 2 and covered
under this document:
 8
314 Series - 3-Way Direct Acting Pilot Valves
 8
320 Series - 3-Way Direct Acting Pilot
Valves
 8
316 Series - 3-Way Indirect Acting Pilot
Valves
 5
51, 552, 553 Series - 3 and 4-Way Indirect Acting Pilot
Valves
 8
317, 8320, 8321 Series - 3-Way Harsh Environment Pilot
Valves
 327/8327 Series - 3-Way Direct Acting Pilot Valves.
 126 Series - 3-Way Direct Acting Pilot Valves.
 8317 Series – 3-Way Piloting Quick Exhaust valve
 307 Series - 3-Way Direct Acting Pilot Valves
 364 Series – 3-Way Spool Valves

362/562 Series – 3-Way and 4-Way Spool Valves

381 Series – 3-Way Poppet Valves

8800 Series – 3-Way High Flow Quick Exhaust Valves
6 Status of the document
6.1 Releases
Revision: K
ECN Number: 288862
Release status: V9629 Initial Release on
02/18/11

Asco 552 Series Specifications

General

Brand	Asco
Model	552 Series
Category	Control Unit
Language	English