Samson 3374 Mounting And Operation Instructions page 26

Installation
Attachment to Type 3214 Valve (DN 125 to
250)
Î See Fig. 5-9.
1. Retract actuator stem (3) as described in
the 'Operation' section (see Fig. 5-8 and
Fig. 5-9).
Actuating shaft
Fig. 5-8:
Actuating shaft for manual override
(actuator for attachment with ring
nut)
Note
For actuators with "actuator stem extends"
fail-safe action (see nameplate), the supply
voltage must be applied to allow the actua-
tor stem be retracted. To apply the supply
voltage, proceed as described in section 5.6.
2. Place actuator onto the valve and secure
using the ring nut (7). If necessary, re-
tract the actuator stem slightly before-
hand.
3. When the stem connector nut (5) rests on
the actuator stem (3), attach both stem
connector clamps (4) and fasten with
screws.
Tightening torque
5-6
4. Move the actuator stem (3) to the end
position (valve closed) as described in
the 'Operation' section.
5. Align travel indicator scale (10) with the
middle of the stem connector (4) and
screw tight.
Attachment to Type 3214 Valve (DN 125 to
150 Nm
Fig. 5-9:
Type 3374-15
Connection with ring nut (form A)
250)
1
2.2
7
3
4
5
1 Actuator
2.2 Valve yoke
3 Actuator stem
4 Stem connector
5 Plug stem
7 Ring nut
10 Travel indicator scale
Attachment to Type 3214
10
EB 8331-3 EN