EL-O-MATIC F-Serie Betriebshandbuch Und Sicherheitshandbuch Seite 12

Section 3: EL-O-Matic F-Series Actuators
February 2021
8
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CAUTION
• Spring-return actuators contain springs in a compressed state. Follow
these instructions to release the spring force safely. The end caps of
spring-return actuators sizes 25 to 600 should be free of the spring
load after 10 full turns (crosswise relaxing) of the end cap screws. If
there is still spring load on the end cap, this might indicate a broken
spring cartridge. Stop this disassembly procedure immediately.
Continuing might cause the end cap to be "shot" away causing serious
injury. Spring return actuator size 950 to 4000 have long end cap
screws to release the spring load safely. Refer to Appendix A of
manual DOC.IOM.EF.EN for the instructions on how to safely remove
the spring load before disassembling the end cap from the
spring-return actuator.
• A spring-return actuator mounted on a valve, which is stuck in mid
stroke, contains a high spring load which will cause a sudden rotation
during disassembly of the actuator versus the valve or valve bracket.
This can cause serious injury to personnel or equipment damage.
• Refer to Appendix A of manual DOC.IOM.EF.EN for instructions to
safely remove the spring load before disassembling the actuator from
a valve, which is stuck in mid stroke.
Safety Guide
DOC.SG.EF.EN Rev. 4
EL-O-Matic F-Series Actuators