Attachment To Rotary Actuators - Samson TROVIS 3731-3 Mounting And Operating Instructions

Mounting and start-up
5.7 Attachment to rotary actu-
ators
Î Required mounting parts and accesso-
ries: Table 4 on page 21.
Both mounting kits contain all the necessary
mounting parts. The parts for the actuator
size used must be selected from the mount-
ing kit. Prepare actuator and mount possibly
required adapter supplied by the actuator
manufacturer.
1. Mount the housing (10) onto the rotary
actuator. In case of VDI/VDE attachment,
place spacers (11) underneath, if neces-
sary.
2. For SAMSON Type 3278 and VETEC
S160 Rotary Actuators, screw the adapt-
er (5) onto the free end of the shaft. For
VETEC R Actuator, place adapter (5.1)
onto the shaft.
Place adapter (3) onto Type 3278, VE-
TEC S160 and VETEC R Actuators. For
VDI/VDE version, this step depends on
the actuator size.
3. Stick adhesive label (4.3) onto the cou-
pling in such a manner that the yellow
part of the sticker is visible in the window
of the housing when the valve is OPEN.
Adhesive labels with explanatory sym-
bols are enclosed and can be stuck on
the enclosure, if required.
4. Fasten coupling wheel (4) on the slotted
actuator shaft or adapter (3) using screw
(4.1) and disk spring (4.2).
5. Unscrew the standard follower pin (2)
from the positioner's M lever (1). Attach
42
the follower pin (Ø 5 mm) included in
the mounting kit to pin position 90°.
6. Mount connecting plate (6) for required
G ¼ connecting thread or pressure
gauge bracket (7) with pressure gauges
on the positioner, making sure the two
seals (6.1) are seated properly. Dou-
ble-acting springless rotary actuators re-
quire the use of a reversing amplifier on
the connection side of the positioner
housing (see section 5.8).
7. For actuators with a volume of less than
300 cm³, screw the screw restriction (ac-
cessories order no. 1400-6964/item no.
0390-1424) into the signal pressure out-
put of the positioner (or the output of the
pressure gauge bracket or connecting
plate).
8. Place positioner on housing (10) and
screw it tight. Taking the actuator's direc-
tion of rotation into account, adjust lever
(1) so that it engages in the correct slot
with its follower pin (Fig. 10).
EB 8387-3 EN