Samson 5827, Монтаж и эксплуатация, Страница: 27 / 92

EB 5827-2 EN 5-3
Installation
tors without fail-safe action) engages in
the actuating shaft.
2. Turn the quarter-turn fastener to the
locked position.
5.4 Mounting the actuator
The actuator is mounted either directly onto
the valve or using a yoke depending on the
valve version used (see
Fig. 5-3 ).
5.4.1 Actuator without fail-
safe action
5.4.1.1 Force-locking attach -
ment
1. Turn the handwheel (2) counterclockwise
to retract the actuator stem.
2. Place the actuator on the valve connec-
tion and fasten with the coupling nut (4).
Tightening torque 20 Nm
5.4.1.2 Form-fit attachment
1. Place the actuator on the yoke and fasten
with the coupling nut (4).
Tightening torque 20 Nm
Place actuator with yoke (11) on the
valve and fasten with the nut (13).
Tightening torque 150 Nm
2. Pull plug stem until it reaches the actua-
tor stem or extend actuator stem using
the handwheel (2).
3. Position the clamps of the stem connector
(12) included in the accessories on the
ends of the actuator stem and plug stem
and screw tight.
5.4.2 Actuator with fail-safe
action
5.4.2.1 Force-locking attach -
ment
"Actuator stem extends" fail-safe action
The actuator stem must be retracted before
the actuator can be mounted onto the valve.
The stem can be retracted either mechanical-
ly or electrically. Both methods are described
below.
Retracting the actuator stem mechanically
1. Unfasten the front housing cover and
place a 4 mm Allen key on the red
actuating shaft.
2. Retract the actuator stem: turn Allen key
counterclockwise and only as far as the
top end position which is at the point
where the torque switch is activated (see
the 'Operation' section).
Risk of damage to the actuator by moving
the actuator stem too far.
Î
Move the actuator stem only as far as the
top end position.
3. Hold Allen key in place and fasten valve
and actuator together using the coupling
nut.
Tightening torque 20 Nm
NOTICE !