9
9. Mounting
9.1 Actuator check
Prior to mounting the actuator please verify if the device has been delivered in the configuration spec-
ified in your order and if it is suitable for the intended purpose. Check:
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if the positioning travel is sufficient for the valve stroke
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if it is filled with the proper oil type, see section 8.2 or oil label on actuator for details.
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if the proper oil quantity has been filled in
Fasten the separately delivered venting screw in the highest bore (depending on the mounting orienta-
tion).
9.2 Mounting orientation
All mounting orientations seen in Figure 3 to 6 are permissible. To facilitate mounting and maintenance,
however, it is recommended to use orientation IMV 1.
9.3 Mounting to the final control element
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Make sure that the actuator is accessible from all sides to ensure convenient handwheel operation,
electrical connection, and replacement of assemblies.
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Avoid direct exposure to rain, snow and other environmental influences. Select the mounting site
accordingly.
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When mounting the actuator close to heat sources use an insulating layer or shielding.
9.3.1 Valve design requirements
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Consider end position forces of up to 2.5 x the rated force when designing/selecting the valve.
9.4 Adapting the actuator stroke to the valve stroke
In factory, the stroke
+3...5 mm
specified on the actuator ID label is set. If it should be necessary to re-
adjust the stroke (observe the minimum and maximum stroke specified in section “Technical Data“)
proceed as described below:
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When mounting the actuator in an orientation other than IMV 1, refill oil according to the specifica-
tions.
-
Fully extend the thrust rod using the handwheel until the internal stop is in contact with the drive
sleeve.
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Undo the screws of the thrust rod hood cover and remove the cover.
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Undo the screw plug in the thrust rod hood.
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The two Allen screws can now be accessed through the opening. Undo the screws.
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Retract the thrust rod using the handwheel until the actuator stroke matches the specified valve
stroke.
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Turn the internal stop (slotted ring nut) clockwise using a screw driver, until the stop gets in contact
with the drive sleeve. Then re-turn acround 3 times.
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Refasten the two Allen screws with the specified torque
RSD 10 / RSD 20:
26 Nm
RSD 50:
26 Nm
RSD 100:
40 Nm
RSD 200:
69 Nm
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Fasten the cover of the thrust rod hood, refasten the lateral screw plug, fill in the oil.
