EB 8111/8112 EN 47
Malfunctions
8.2 Emergency action
Upon supply air or control signal failure, the
valve moves to its fail-safe position (see sec-
tion3.1).
Operators are responsible for emergency ac-
tion to be taken in the plant.
In the event of a valve malfunction:
1. Close the shut-off valves upstream and
downstream of the control valve to stop
the process medium from owing
through the valve.
2. Check the valve for damage. If neces-
sary, contact SAMSON's After-sales Ser-
vice department.
Putting the valve back into operation after
a malfunction
Î Slowly open the shut-off valves. Allow
the process medium to ow into the valve
slowly.
Contact SAMSON's After-sales Service department for malfunctions not listed in the table.
Note
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