Removal; Force-Locking Attachment - Samson 5824 Mounting And Operating Instructions

12 Removal

The work described in this section is only to
be performed by personnel appropriately
qualified to carry out such tasks.
DANGER
!
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.
WARNING
!
Risk of personal injury due to hot compo-
nents.
Î If necessary, allow the pipeline and valve
components to cool down.
WARNING
!
Risk of personal injury due to residual pro-
cess medium.
While working on the valve, residual me-
dium can flow 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.
EB 5824-1 EN

12.1 Force-locking attachment

Version without fail-safe action
1. Retract the actuator stem using the hand-
wheel (see the 'Operation' section).
2. Open the front housing cover.
3. Disconnect and remove the wires of the
connection cables from the terminals.
4. Unscrew the coupling nut (4 in Fig. 12-4)
and remove the actuator from the valve
connection.
Version with "actuator stem extends" fail-
safe action
1. Open the front housing cover.
2. Disconnect and remove the wires of the
connection cables from the terminals.
3. Retract the actuator stem with a 4 mm
Allen key (see the 'Operation' section).
Î Hold the actuating shaft in place after re-
tracting the actuator stem to prevent it
from extending again.
4. Unscrew the coupling nut (4 in Fig. 12-4)
and remove the actuator from the valve
connection.
Version with "actuator stem retracts" fail-
safe action
Î Proceed as for the version without fail-
safe action.
Removal
12-1