2. Screw the associated lever D1 or D2 (for
700 cm² actuator) to the pick-up lever of
the positioner.
3. Fasten the distance plate (15) with the
seal pointing towards the actuator yoke.
4. Attach the positioner such that the lever
D1 or D2 slides centrically over the pin
(1.1) of the clamp (1.2). Screw the
positioner to the distance plate (15).
5. Mount the cover (16).
6. Check whether the correct measuring
spring has been installed as listed in Ta
-
ble 4.
Range spring 1 is installed as standard.
If necessary, replace it with range spring
2 included in the accessories and fix it at
the outer slot.
Actuators with 240, 350 and 700 cm² di-
aphragm area
7. Make sure that the tip of the gasket (16)
projecting from the side of the connec-
tion block (Fig. 3, middle) is positioned
to match the actuator symbol that corre
-
sponds to the actuator's fail-safe action
"Actuator stem extends" or "Actuator
stem retracts."
If necessary, remove the three fixing
screws and the cover. Reposition the
gasket (16) turned by 180°.
The old connection block version re
-
quires the switch plate (13) to be turned
such that the corresponding actuator
symbol points to the marking.
8. Place the connection block with its seals
on the positioner and the actuator yoke
and screw tight using the fastening
screw.
Actuators with "Actuator stem retracts"
require the ready-made signal pressure
line to be installed.
Actuators with 120 cm² diaphragm area
The signal pressure is transmitted to the dia
-
phragm chamber over the switchover plate
(Figs. 3 and 4, bottom).
7. Remove the screw in the rear cover of
the positioner (Fig. 5) and seal the side
signal pressure output with the plug con
-
tained in the accessories kit.
8. Mount the positioner such that the bore
in the distance plate (15) mates with the
seal in the bore of the actuator yoke.
9. Align the switchover plate with the corre-
sponding symbol and fasten it to the ac-
tuator yoke.
NOTICE
When a solenoid valve or a similar device is
attached to the 120 cm² actuator in addition
to the positioner, do not remove the rear M3
screw plug. In this case, the signal pressure
must be transmitted from the signal pressure
output to the actuator over an additional
connecting plate (Table 2). The switchover
plate (Figs. 3 and 4) is not used.
Filling the actuator with air
If the spring chamber of the actuator must
be filled with the positioner's exhaust air,
use piping (Table 3) to connect the spring
chamber (with version "Actuator stem ex
-
tends") to the connection block. To do so, re
-
move the plug from the connection block.
12 EB 8355-1 EN
Attachment to control valve
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