Samson 3375, Mounting And Operating Instructions

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5-2 EB 8332-2 EN
Installation
5.2 Preparation for installation
Before installation, 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 mounting.
5.3 Mounting the actuator
1. Push the plug stem down.
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. Actuator without fail-safe action:
Retract the actuator stem using the manu-
al override (see the 'Operation' section).
Actuator with fail-safe action:
Retract the actuator stem electrically in
the MAN mode (see the 'Operation' sec-
tion).
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. When the stem connector nut (7) rests on
the actuator stem, attach both stem con-
nector clamps (4) and fasten with screws.
6. Move actuator stem (3) to the end posi-
tion (valve closed) using the manual
override or electrically.
7. Align travel indicator scale (9) with the
middle of the stem connector (4) and
screw tight.
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 5.7.
Note