Samson 5824 Series - Decommissioning and Removal; Decommissioning; Removing the Actuator from the Valve; Force-Locking Attachment

56 EB 5824-2 EN
Decommissioning and removal
12 Decommissioning and
removal
Risk of fatal injury due to electric shock.
− Before performing any work on the device
and before opening the device, disconnect
the supply voltage and protect it against
unintentional reconnection.
− Only use power interruption devices that
are protected against unintentional recon-
nection of the power supply.
Risk of bursting in control valve compo-
nents due to incorrect opening.
− Before starting any work on the control
valve, depressurize all plant sections af-
fected as well as the valve.
− Drain the process medium from all the
plant sections affected and from the valve.
− Wear recommended personal protective
equipment. See associated valve documen-
tation.
12.1 Decommissioning
To decommission the electric actuator for
maintenance work or disassembly, proceed
asfollows:
1. Close the shut-off valves upstream and
downstream of the control valve to stop
theprocessmediumfromowing
through the valve.
2. Completely drain the pipelines and
valve.
3. Disconnect the supply voltage and pro-
tect it against unintentional reconnection.
4. If necessary, allow the pipeline and valve
components to cool down.
5. Remove the valve from the pipeline. See
associated valve documentation.
12.2 Removing the actuator
from the valve
12.2.1 Force-locking attach-
ment
1. Unscrewthecouplingnut(4inFig.7on
page 25) and remove the actuator
from the valve connection.
12.2.2 Form-tattachment
1. Pull plug stem until it reaches the actua-
torstemorextendactuatorstemusing
the handwheel.
2. Unfastenthestemconnectorclamps(16
inFig.7onpage25)betweentheac-
tuator stem and the plug stem.
3. Undo the nut (17) and remove the rod-
type yoke (15) together with the actuator
fromthevalve(seeFig.7onpage
25).
4. Unscrew the coupling nut (4) and remove
the actuator from the rod-type yoke (15).
SeeFig.7onpage25.
DANGER
!
DANGER
!
DANGER
!
DANGER
!