Samson 3375-10 - Preparation for Installation; Mounting the Actuator

5-2 EB 8332-1 EN
Installation
Handwheel
Fig.5-2: Manual override
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.
4. Place actuator onto the valve bonnet (2)
and secure using the ring nut (6).
Tighteningtorque(M30) 150Nm
Tighteningtorque(M60) 250Nm
5. Move the actuator stem (3) using the
manual override or motor until the stem
contacts the stem connector nut (7).
Tightenthestemconnectorclamps(4).
6. Move the actuator stem (3) to the lower
end position (globe valve closed) electri-
cally or using the manual override.
7. Align travel indicator scale (9) with the
middle of the stem connector (4) and
screw tight.
Note
5.2 Preparation for installation
Beforemounting,makesurethefollowing
conditions are met:
− The actuator is not damaged.
Proceed as follows:
Lay out the necessary material and tools to
have them ready during installation work.
Cover screws
Phillips screws are used to fasten the actua-
tor housing cover. Use a POZIDRIV
®
PZ2
screwdriver to undo and tighten the screws.
5.3 Mounting the actuator
Risk of malfunction due to incorrect mount-
ing.
Î Only mount the actuator following the
described sequence.
1. Push the plug stem down to close the
valve.
2. Turn the stem connector nut (7) until the
dimension x from the top of the yoke to
the middle of the stem connector nut (7)
is achieved:
WithM30:x=90mm
WithM60:x=165mm
Lock this position with the lock nut (8).
3. Retract actuator stem to the top end posi-
tion using the manual override (see the
'Operation' section).
NOTICE
!