Samson 3767 - Page 32

5-8 EB 8355-2 EN
Installation
lylocatedinthebracket(11),xthespring
included in the accessories at the back of the
positioner housing as illustrated in Fig.5-4.
The positioner can be mounted either on the
left or right side of the control valve
(Fig.5-5). Turn the positioner at the adapter
housingby180°todetermineorchangethe
operatingdirectionofthepositioner/control
valve unit.
a) Mounting sequence
Î Required mounting parts and accesso-
ries:Table 5-6
Î See Fig.5-6
Valve with cast yoke
1. Screw the plate (3) to the stem connector
of the actuator and plug stems using the
countersunk screws.
Use the additional mounting bracket (15)
for2100and2800cm²actuatorswith
120mmtravel.
2. Remove the rubber stopper from the
adapter housing and fasten the adapter
housing either on the left or right of the
NAMUR rib using the hex head screw as
shown in Fig.5-5.
Valve with rod-type yoke
1. Screw the plate (3) to the follower clamp
of the plug stem.
2. Screw the studs (12) into the adapter
housing.
3. Place the adapter housing with the plate
(13) onto either the left or right valve rod
(Fig.5-5) and screw tight using the nut
(14). Make sure that the adapter housing
is at the correct height to mount the lever
(1)sothatitisinahorizontalposition
when the valve is at mid-travel.
4. Screw the pin (2) into the middle row of
holes on the plate (3) and lock it into po-
sition over the correct lever marking (1
or 2) as indicated in .
5. Clamp the clip (4) onto the lever (1). The
clip must be clamped onto the lever (1)
with the open side facing downward
when the positioner is attached with the
air connection at the front.
6. Attach the lever (1) including clamping
plate (5) to the shaft (8), making sure
that the clip clasps the pin (2).
b) Initial adjustment of travel
1. Movethevalveto50%travel.
2. Move the shaft (8) in the adapter hous-
ingsothattheblackpointer(7)matches
the cast marking on the adapter housing.
3. Fasten the clamping plate (5) in this posi-
tion using the screw (6).
4. Screw the pin (10a) into the positioner
lever on the side where the press nut is
located. Lock it in position with the hex
nut on the other side, observing the
mounting position A or B according to
Table 5-1 and Fig.5-6.
5. Place the positioner on the adapter hous-
ing, taking into account the mounting di-
rection. Fasten it, making sure that the
pin (10a) rests against the bracket (11).
2
1,51
7 8 5
15
14
3 2
2 4 36 1
L
12
13
119
AB
10b
10a
Attachment to
NAMUR rib
Attachment to
rods
1 Lever N1, N2
2 Pin
3 Plate
4 Clip
5 Clamping plate
6 Screw
7 Pointer
8 Shaft
9 Lever of positioner
10a Coupling pin
10b Lock nut
11 Bracket
12 Studs
13 Plate
14 Nuts
15 Mounting bracket
Fig.5-6: Attachment according to IEC60534-6 (NAMUR)