Samson 3351 - Page 6

1-2 EB 8039 EN
Safety instructions and measures
− Protective clothing, gloves, eye protection and respiratory protection in applications with
hot, cold and/or corrosive media
− Wear hearing protection when working near the valve
− Hard hat
− Safety harness, e.g. when working at height
− Safety footwear, if applicable ESD (electrostatic discharge) footwear
Î Checkwiththeplantoperatorfordetailsonfurtherprotectiveequipment.
Revisionsandothermodications
Revisions,conversionsorothermodicationsoftheproductarenotauthorizedbySAMSON.
Theyareperformedattheuser'sownriskandmayleadtosafetyhazards,forexample.Fur-
thermore, the product may no longer meet the requirements for its intended use.
Safety features
Upon supply air or control signal failure, the valve moves to a certain fail-safe position (see
'Design and principle of operation' section).
Warning against residual hazards
To avoid personal injury or property damage, plant operators and operating personnel must
preventhazardsthatcouldbecausedinthecontrolvalvebytheprocessmedium,theoperat-
ing pressure, the signal pressure or by moving parts by taking appropriate precautions. Plant
operatorsandoperatingpersonnelmustobserveallhazardstatements,warningsandcau-
tion notes in these mounting and operating instructions.
Hazardsresultingfromthespecialworkingconditionsattheinstallationsiteofthevalvemust
beidentiedinariskassessmentandpreventedthroughthecorrespondingsafetyinstruc-
tions drawn up by the operator.
Responsibilities of the operator
Operators are responsible for proper use and compliance with the safety regulations. Opera-
tors are obliged to provide these mounting and operating instructions as well as the refer-
enced documents to the operating personnel and to instruct them in proper operation. Fur-
thermore, operators must ensure that operating personnel or third parties are not exposed to
any danger.
Operatorsareadditionallyresponsibleforensuringthatthelimitsfortheproductdenedin
the technical data are observed. This also applies to the start-up and shutdown procedures.
Start-up and shutdown procedures fall within the scope of the operator's duties and, as such,
are not part of these mounting and operating instructions. SAMSON is unable to make any