Samson Series 3730 Mounting And Operating Instructions page 35

version "Actuator stem extends".
For the fail-safe position "Actuator stem re-
tracts" the connection on the top diaphragm
case is used. The connection at the side of
the yoke must be fitted with a venting plug
(accessories).
Mounting the position sensor
1. Place the lever (1) on the sensor in
mid-position and hold it in place.
Unthread the nut (1.1) and remove the
lever together with the disk spring (1.2)
from the sensor shaft.
2. Screw the position sensor (20) onto the
mounting plate (21).
3. Depending on the actuator size and
rated valve travel, determine the re-
quired lever and position of the follower
20
21
Symbol
Marking
Fig. 14 · Mounting for Type 3277-5 Actuator (left) and Type 3277 Actuator (right)
Attachment to the control valve – Mounting parts and accessories
4. Place the lever (1) and disk spring (1.2)
5. Place the follower clamp (3) on the actu-
6. Place the mounting plate (21) together
1
2
3
11
1.1
1.2
Signal pressure
9
Signal pressure
Actuator stem
extends retracts
pin (2) from the travel table on page 19.
The positioner is delivered with lever M
in pin position 35 on the sensor. If nec-
essary, remove the follower pin (2) from
its pin position and move it to the bore-
hole for the recommended pin position
and screw tight.
on the sensor shaft.
Place the lever (1) in mid-position and
hold it in place. Screw on the nut (1.1).
ator stem, align and fasten it, making
sure that the fastening screw rests in the
groove of the actuator stem.
with the sensor onto the actuator yoke so
that the follower pin (2) rests on the top
Vent plug
1 Lever
1.1 Nut
1.2 Disk spring
2 Follower pin
3 Follower clamp
9 Connecting plate
11 Cover
20 Position sensor
21 Mounting plate
35
EB 8384-2 EN