Samson 3525, Монтаж и эксплуатация

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EB 8823 EN 47
Malfunctions
Malfunction Possible reasons Recommended action
Increased flow through closed
valve (seat leakage)
Dirt or other foreign particles
deposited between the seat and
plug.
Shut off the section of the pipe -
line and flush the valve.
Valve trim is worn out. Replace seat and plug (see sec-
tion 7.1.3 or 7.2.3) or contact
SAMSON's After-sales Service
department.
Contact SAMSON’s After-sales Service department for malfunctions not listed in the table.
Note
8.2 Emergency action
Upon supply air or control signal failure, the
valve moves to its fail-safe position (see sec-
tion 3.1).
Operators are responsible for emergency ac -
tion to be taken in the plant.
In the event of a valve malfunction:
1. Depressurize the plant and interrupt the
medium flow.
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 resume medium flow in the pipe-
line.