EB 5866 EN
25
Mounting and start-up
Support or suspension
Depending on the valve version and mount-
ing position, the control valve and pipeline
must be supported or suspended. The plant
engineering company is responsible in this
case.
Premature wear and leakage due to insuffi-
cient support or suspension. In the following
versions, the control valve must be supported
or suspended:
−
Valves that are not installed with the actua-
tor upright on top of the valve.
Attach a suitable support or suspension to
the valve.
Insulation of cold systems
To insulate cold systems, we recommend to
proceed as follows:
1. Fill the plant and carefully rinse it.
2. Shut down the plant and let it heat up
until all the condensation water has dried
off.
3. Mount and insulate the intermediate in-
sulating piece (1990-1712).
Observe the following on installing the con-
trol valve:
Î
Make sure that the electric actuator re-
mains accessible after installation.
Î
Make sure that the plug stem can move
freely and does not touch the insulation.
Î
Make sure that the actuator stem does
not touch the insulation.
The insulation thickness depends on the me-
dium temperature and the ambient condi-
tions. 50 mm is a typical thickness.
Pipeline routing
To ensure the control valve functions proper-
ly, follow the installation instructions given
below:
Î
Do not exceed the maximum permissible
flow velocity.
The plant engineering company is responsi-
ble for determining the maximum permissi-
ble flow velocity.
SAMSON's After-sales Ser-
vice department can support you to deter-
mine the flow velocity for your plant.
Î
Install the valve free of stress and with the
least amount of vibrations as possible. If
necessary, attach supports to the valve.
Î
Install the valve allowing sufficient space
to remove the actuator and valve or to
perform service and repair work on
them.
Vent plug (Type 3222/2780 only)
Vent plugs are screwed into the exhaust air
ports of pneumatic devices. They ensure that
any exhaust air that forms can be vented to
the atmosphere (to avoid excess pressure in
the device). Furthermore, the vent plugs al-
low air intake to prevent a vacuum from
forming in the device.
NOTICE
!
Note
Note
Summary of Contents for 3222/5857 series
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