Samson 3241 Series User Manual

9-4 EB 8015 EN
Servicing
Inspection and testing Action to be taken in the event of a negative result:
Check the pipe connections and gaskets
on the valve and actuator for leakage.
Check the bolted joint (tightening torque).
Replace the gasket on the anged joint as described in sec-
tion9.4.
Adjust the packing (see information under 'Adjusting the
packing' in the 'Testing the installed valve' section) or re-
place it (see section9.4).
Check the test connection and bellows
seal (if used) for external leakage.
WARNING! Risk of personal injury due
to pressurized components and process
medium being discharged. Do not loos-
en the screw of the test connection
while the valve is pressurized.
Put the control valve out of operation (see the 'Decommis-
sioning' section). To repair the bellows section, contact our
after-sales service (see the 'Repairs' section).
Check the valve's seat leakage. Shut off the section of the pipeline and ush the valve to re-
move any dirt and/or deposited foreign particles between
the seat and plug.
Replace the seat and plug (see section9.4)
Check the valve for external damage
(e.g. corrosion).
Remove any damage immediately. If necessary, put the
control valve out of operation (see the 'Decommissioning'
section).
Check the valve accessories to ensure
they are mounted properly.
Tighten the connections of the valve accessories.
Check to ensure that the actuator and
plug stem move smoothly.
Tighten the packing correctly (see information under
'Adjusting the packing' in the 'Testing the installed valve'
section).
Unblock a blocked actuator and plug stem.
WARNING! A blocked actuator or plug stem (e.g. due to
seizing up after remaining in the same position for a long
time) can suddenly start to move uncontrollably. Injury to
hands or ngers is possible if they are inserted into the
actuator or valve.
Before trying to unblock the actuator or plug stem,
disconnect and lock the pneumatic air supply as well as the
control signal. Before unblocking the actuator, release any
stored energy in the actuator (e.g. spring compression). See
associated actuator documentation.
If possible, check the valve's fail-safe
position by briey interrupting the air
supply.
Put the control valve out of operation (see the 'Decommis-
sioning' section). Identify the cause for the malfunction and
rectify it (see the 'Troubleshooting' section).

Samson 3241 Series Specifications

General

Brand	Samson
Model	3241 Series
Category	Control Unit
Language	English