Samson 3766 - Mounting the Lever with Feeler Roll; Mounting the Intermediate Piece

26 EB 8355-1 EN
Mounting on control valves
Check whether the correct range spring has
been installed as listed in Table7. Range
spring 1 is installed as standard. If neces-
sary, replace it with range spring 2 included
in the accessories and x it at the outer
hook-in holes.
Double-acting springless rotary actuators re-
quire the use of a reversing amplier on the
connection side of the positioner housing
(seesection3.3.4).
Whenusingareversingamplier,thepres-
sureregulator(9,Fig.1)mustbeturned
clockwise as far as it will go (also see sec-
tion4.1.2).
When attaching the positioner to the
SAMSONType3278RotaryActuator
(Fig.7,left),theinsideoftheactuatorand
the unused reverse side of the diaphragm
are purged with the positioner's exhaust air.
Additional piping is not required.
When attaching the positioner to actuators
fromothermanufacturers(Fig.7,right),the
reverse side of the diaphragm can be
purged with air over a pipe connection in-
stalled between the actuator and intermedi-
ate piece.
3.3.1 Mounting the lever with
feeler roll
1. Placetheleverwithfeelerroll(35)onthe
sideofthelever(37)oppositetowhere
the press nuts are located and secure it
using the supplied screws (38) and
washers.
To ensure a close physical contact between
the lever with feeler roll and the cam disk,
attach the spring contained in the accesso-
ries kit (order no. 1400-6660) to the back of
the positioner housing (see Fig.4).
3.3.2 Mounting the interme-
diate piece
SAMSON Type3278 Actuator
1. Fastentheadapter(36)tothefreeshaft
end of the rotary actuator.
2. Fasten the intermediate piece (34) to the
actuator housing using two screws.
Align the intermediate piece so that the
air connections of the positioner point to-
ward the diaphragm case side.
3. Align the cam disk (40) and scale (39)
as described in section 3.3.3 and fasten.
Actuators according to VDI/VDE 3845
(09/2010)
(xinglevel2)
1. Place the assembled intermediate piece
(34,44,45and42)ontothemounting
bracket included in the scope of actuator
delivery and fasten.
2. Align the cam disk (40) and scale (39)
as described in section 3.3.3 and fasten.
NOTICE
!
NOTICE
!