Samson 3374 - Adjusting the Flow Rate

EB 8331-3 EN 11-1
Removal
11 Removal
The work described in this section is only to
be performed by personnel appropriately
qualiedtocarryoutsuchtasks.
Risk of fatal injury due to electric shock.
Î Before disconnecting live wires, switch
off the supply voltage at the actuator and
protect it against unintentional reconnec-
tion.
Risk of personal injury due to hot compo-
nents.
Î If necessary, allow the pipeline and valve
components to cool down.
Risk of personal injury due to residual
process medium in the valve.
While working on the valve, residual me-
dium can ow out of the valve and, depend-
ing on its properties, cause personal injury,
e.g. (chemical) burns.
Î Wear protective clothing, safety gloves
and eye protection.
DANGER
!
WARNING
!
WARNING
!
11.1 Construction with inte-
grated yoke
Actuator without fail-safe action
1. Disconnect the supply voltage and pro-
tect it against unintentional reconnection.
2. Make sure that a signal from the control-
ler cannot act upon the actuator. If neces-
sary, disconnect the wires connecting the
controller.
3. Disconnect the wires of the connecting
lines at the actuator.
4. Remove the connecting lines.
5. Retract actuator stem as described in the
'Operation' section.
6. Undo the stem connector parts between
the plug and actuator stems.
7. Loosen the nut at the yoke.
8. Lift the actuator off the valve.
Actuator with "stem extends" fail-safe
action
1. Make sure that a signal from the control-
ler cannot act upon the actuator. If neces-
sary, disconnect the wires connecting the
controller.
2. Retract actuator stem as described in the
'Operation' section.
3. Undo the stem connector parts between
the plug and actuator stems.
4. Loosen the nut at the yoke.
5. Lift the actuator off the valve.
6. Disconnect the supply voltage and pro-
tect it against unintentional reconnection.