Samson 3222/2780 series, Монтаж и эксплуатация

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EB 5866 EN 31
Malfunctions
8 Malfunctions
Depending on the operating conditions, check the valve at certain intervals to prevent possi-
ble failure before it can occur. Operators are responsible for drawing up a test plan.
SAMSON's After-sales Service department can support you to draw up an inspection plan
for your plant.
8.1 Troubleshooting
Malfunction Possible reasons Recommended action
Actuator or plug stem does not
move on demand.
Actuator is blocked. Check attachment.
Unblock the actuator.
No or incorrect power supply
connected.
Check the power supply and
connections.
Signal pressure too low Check the signal pressure.
Check the signal pressure line for
leakage.
Actuator or plug stem does not
move through the whole range.
No or incorrect power supply
connected.
Check the power supply and
connections.
Signal pressure too low Check the signal pressure.
Check the signal pressure line for
leakage.
The valve leaks to the atmo-
sphere (fugitive emissions).
Plug stem seal defective Contact SAMSON's After-sales
Service department.
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. Contact SAMSON's After-sales
Service department.
Contact SAMSON's After-sales Service department for malfunctions not listed in the table.
Tip
Note