Samson 3730-2 Mounting And Operating Instructions page 30

Attachment to the control valve – Mounting parts and accessories
7. Insert the screws (13.1) through the mid-
dle holes of the adapter block (13).
8. Place the connecting plate (12) together
with the seal (12.1) onto the screws
(13.1) corresponding to the fail-safe ac-
tion "actuator stem extends" or "actuator
stem retracts". The fail-safe action that
applies is determined by aligning the
groove of the adapter block (13) with the
groove of the connecting plate (12)
(Fig. 7).
extends
12 Connecting plate
13 Adapter block
Fig. 7: Fail-safe action
9. Mount the adapter block (13) together
with the connecting plate (12) to the ac-
tuator using the screws (13.1).
10. Insert the vent plug (11.1) into the Exh.
connection.
11. For fail-safe action "actuator stem ex-
tends", seal the Y1 port with a blanking
plug.
For fail-safe action "actuator stem re-
tracts", connect the Y1 port to the signal
pressure connection of the actuator.
30
Actuator stem
retracts
Z
12
13
Z
Place positioner on the adapter block
(13) in such a manner that the follower
pin (2) rests on the top of the follower
clamp (3). Adjust the lever (1) corre-
spondingly and open the positioner cov-
er to hold the positioner shaft in position
at the cap or rotary pushbutton.
The lever (1) must rest on the follower
clamp with spring force.
Fasten the positioner to the adapter block
(13) using the two fastening screws (6.3).
Make sure the formed seal (6.2) is prop-
erly seated.
12. Mount cover (11) on the other side to the
yoke. Make sure that the vent plug is lo-
cated at the bottom when the control
valve is installed to allow any condensed
water that collects to drain off.
EB 8384-2 EN