Samson 3271, Монтаж и эксплуатация, Страница: 21 / 36

EB 8310-8 EN 21
Mounting and start-up
A7 Actuator stem
A8 Ring nut
A26/27 Stem connector
clamps
A8
A7
A26/27
Fig. 4: Type 3271 Pneumatic Actuator
The upper signal pressure range value is
the same as the maximum value of the
bench range or operating range (with
preloaded springs).
For actuator springs that are to be pre
-
loaded subsequently, determine the up -
per and lower signal pressure range as
described in section 5.2.
8. Depending on the direction of action:
Actuator stem extends
Apply a signal pressure that corresponds
to the lower signal pressure range value
to the connection on the bottom dia
-
phragm chamber.
Actuator stem retracts
Apply a signal pressure that corresponds
to the upper signal pressure range value
to the connection on the top diaphragm
chamber.