Samson 3375, Mounting And Operating Instructions, Page: 83 / 130

EB 8332-2 EN 12-1
Removal
12 Removal
The work described in this section is only to
be performed by personnel appropriately
qualified 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.
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. Unscrew the ring nut on the valve bon-
net.
8. Lift the actuator off the valve.
Actuator with 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 the actuator stem electrically (eL
terminal) in the MAN mode as described
in the 'Operation' section.
3. Undo the stem connector parts between
the plug and actuator stems.
4. Unscrew the ring nut on the valve bon-
net.
5. Lift the actuator off the valve.
6. Disconnect the supply voltage and pro-
tect it against unintentional reconnection.
Î
The actuator stem moves to the fail-safe
position.
7. Disconnect the wires of the connecting
lines.
8. Remove the connecting lines.
DANGER !