Samson TROVIS 5724-8 Series Mounting And Operating Instructions page 6

Safety instructions and measures
Personal protective equipment
No personal protective equipment is required for the direct handling of the electric actuator
with process controller. Work on the control valve may be necessary when mounting or re-
moving the device.
Î Observe the requirements for personal protective equipment specified in the valve docu-
mentation.
Î Check with the plant operator for details on further protective equipment.
Revisions and other modifications
Revisions, conversions or other modifications 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
The following safety features exist:
− An active blocking protection (A8.3 configuration item = 1, see section 10.2) in the elec-
tric actuator with process controller prevents the valve from seizing up.
− Upon supply voltage failure, the TROVIS 5725-8 Electric Actuator causes the valve to
move to a certain fail-safe position. The fail-safe action of SAMSON actuators is speci-
fied on the actuator nameplate.
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, warning and caution
notes in these mounting and operating instructions, especially for installation, start-up and
service work.
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 to the operating per-
sonnel and to instruct them in proper operation. Furthermore, operators must ensure that op-
erating personnel or third parties are not exposed to any danger.
6 EB 5724-8 EN