Samson 3271, Original Instructions Manual, Page: 30 / 72

5-2 EB 8310-6 EN
Mounting and assembly
Risk of actuator damage due to excessively
high or low tightening torques.
Observe the specified torques on tightening
actuator components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are not tightened far enough may
loosen.
Î
Observe the specified tightening torques
(
u
AB 0100).
Risk of actuator damage due to the use of
unsuitable tools.
Î
Only use tools approved by SAMSON
(
u
AB 0100).
5.2.1 Mounting the actuator
onto the valve
To mount the actuator on the valve, proceed
as follows:
The valve and actuator are assembled with
special attention paid to the actuator's bench
range and direction of action. These details
are specified on the actuator nameplate (see
the 'Markings on the device' section).
1. Loosen the lock nut (10) and stem con-
nector nut (9) on the valve.
2. Press the plug together with the plug stem
firmly into the seat ring.
3. Thread down the lock nut and stem con-
nector nut.
4. Remove the clamps of the stem connector
(A26/A27) and the ring nut (A8) from
the actuator.
5. Slide the ring nut over the plug stem.
6. Place the actuator onto the valve bonnet
(2) and secure it with the ring nut.
7. Connect the signal pressure. See sec-
tion 5.2.2.
8. Screw on the stem connector nut (9) by
hand until it touches the actuator stem
(A7).
9. Turn the stem connector nut a further
quarter turn and secure this position with
the lock nut (10).
10. Position the stem connector clamps
(A26/A27) and screw them tight.
11. Make sure that the dimension a is adjust-
ed as specified in Table 5-1.
12. Align the travel indicator (84) with the tip
of the stem connector clamp.
NOTICE !
NOTICE !
Tip