Samson 3730 Series Mounting And Operating Instructions page 60

Installation
2. Place coupling wheel (4) with flat side
facing the actuator on the follower clamp
(3). Align slot so that it matches the direc-
tion of rotation when the valve is in its
closed position (see Fig. 5-20).
3. Fasten the coupling wheel (4) and follow-
er clamp (3) tightly onto the actuator shaft
using screw (4.1) and disk spring (4.2).
4. Fasten the bottom pair of brackets (10.1)
with the bends pointing either facing to
the inside or to the outside (depending on
the actuator size) onto the actuator hous-
ing. Position the top pair of brackets (10)
and fasten.
5. Mount connecting plate (6) or pressure
gauge bracket (7) with pressure gauges
on the positioner. Make sure that the two
seals (6.1) are seated properly. Dou-
ble-acting springless rotary actuators re-
quire the use of a reversing amplifier on
1
2
3
Fig. 5-19: Mounting the coupling wheel on
Type 3278
5-26
the connection side of the positioner hous-
ing (see section 5.5.7).
6. Unscrew the standard follower pin (2)
from the positioner's M lever (1). Use the
metal follower pin (Ø 5 mm) included in
the mounting kit and screw tight into the
hole for pin position 90°.
7. Place positioner on the top bracket (10)
and fasten tight. Taking the actuator's di-
rection of rotation into account, adjust le-
ver (1) so that it engages in the slot of the
coupling wheel (4) with its follower pin
(Fig. 5-20). It must be guaranteed that the
lever (1) is parallel to the long side of the
positioner when the actuator is at half its
angle of rotation.
8. Stick the scale plate (4.3) on the coupling
wheel so that the arrow tip indicates the
closed position and it can be easily read
when the valve is installed.
1.2
1.1
4.1
4.2
5
EB 8384-4 EN