Mounting Onto Type 3510 Micro-Flow Valve - Samson 3271-5 Mounting And Operating Instructions

5.1.2 Mounting onto
Type 3510 Micro‑flow
Valve
1. Remove the ring nut (A8) from the
actuator.
2. Loosely thread the lock nut (A27.3) and
stem connector nut (A27.1) upward on
the actuator.
3. Place the actuator on the yoke (3).
4. Slide the ring nut (A8) over the stem con-
nector nut (A27.1) and the lock nut
(A27.3) onto the actuator stem (A7) and
und screw tight. Observe tightening
torques.
5. Determine the lower and upper signal
pressure range values.
The lower signal pressure range value
corresponds to the minimum value of the
bench range or operating range (see
section 5.3 for adapted travel range).
The upper signal pressure range value
corresponds to the maximum value of the
bench range or operating range (see
section 5.3 for adapted travel range).
6. Connect the signal pressure. See sec-
tion 5.2.
7. In the "actuator stem extends" version:
to retract the actuator stem, apply a sig-
nal pressure corresponding to approx.
50 % of the bench range to the actuator.
Fasten tight the stem connector nut
(A27.1) at the bottom end of the actua-
tor stem (A7) to the bearing sleeve
(A27.2) on the plug stem (5). Disconnect
the signal pressure.
EB 8310-1 EN
In the "actuator stem retracts" version:
fasten tight the stem connector nut
(A27.1) at the bottom end of the actua-
tor stem (A7) to the bearing sleeve
(A27.2) on the plug stem (5).
8. In the "actuator stem extends" version:
apply a signal pressure that corresponds
to the lower bench range value to the ac-
tuator. Turn the stem connector (A27.1
and A27.2) on the actuator stem until the
plug (5) starts to move out of the seat.
In the "actuator stem retracts" version:
apply a signal pressure that corresponds
to the upper bench range value to the
actuator. Turn the stem connector (A27.1
and A27.2) on the actuator stem until the
plug (5) starts to move out of the seat.
Note
If necessary, repeat the action described in 8
until the stem connector is correctly adjusted.
9. Lock the position of the stem connector
with the lock nut (A27.3).
10. Align the travel indicator scale (84) so
that the bottom line on the scale is at the
same level as the O-ring on the stem
connector nut. See Fig. 7.
Mounting and start-up
27