10
Model EA91A＆EA90A
Position of Stroke Adjustment Lever
Installation Drawing of
Actuator for Model 3800
Direct Action（DA）
Reverse Action（RA）
To be square
Fixing Bolt
Diaphragm Stem
5〜10mm
Actuator
Bracket
4.4 Installation to Linear Motion Actuator
Use bracket suitable for actuator, and install the
Positioner properly. When installing, use mounting
threaded hole on the back of the Positioner and mount-
ing threaded hole in the front of the actuator.
⑴ Attach the stem clamp to diaphragm stem.
⑵ Attach the bracket to actuator.
⑶ Install the Positioner to bracket.
⑷ Change A/M Switch to M(Manual) and turn handle
of air filter regulator to supply air pressure to actuator
for letting the valve stroke come up to 50％ position.
⑸ Fix the connector pin to feedback lever and
connector arm.
IMPORTANT
IMPORTANT
At this point, attach the stem clamp upward
approx. 5 to 10 mm from lock nut. Fix the
connector arm so as to be parallel to the front
surface of actuator.
Fix the connector pin so that feedback the
lever and connector arm are positioned in
horizontal and parallel (square to positioner)
at midpoint (50％) of the stroke.
Assemble the connector pin between feed-
back lever and set spring.
Check that the stroke adjustment lever in the
Positioner is square.
⑹ Install air piping. (Refer to Item 5.2)
※Model 3800, Model 2800, and other linear motion actuator
may be applied the same procedures as mentioned above.
①
②
③
Installation of
Feedback Lever for Front Side
Reverse Action(RA)
Installation of
Feedback Lever for Back Side
Direct Action(DA)
Feedback Lever
Feedback Lever
Connector Pin
Connector Pin
Stem Clamp
Connector Arm
Set Spring
Set Spring
