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LME / RSD10 / RSD20 / RSD50 / RSD100 (Contrac) ELECTRICAL LINEAR ACTUATOR | OI/LME/RSD10/100-EN REV. E
Adaptation of actuator stroke to the valve
stroke (RSD, only)
The factory-set actuator stroke corresponds to the stroke
named on the ID-label + 1 mm (0.04 in). If an application requires
stroke adjustment, proceed as follows (comply with min. / max.
stroke; see "Specification"):
Note
With a mounting position other than IMV 1, drain the oil until the
oil level is below the thrust rod cover (see Figure 8,
1. Drive the thrust rod completely out with the handwheel. The
internal limit stop should now be touching the driving sleeve.
2. Loosen the screws of the thrust rod cover and remove the
cover.
3. Open the screw plug in the thrust rod cover.
4. Both Allen clamping screws are accessible through the
opening. Loosen the screws.
5. Use the handwheel to drive in the thrust rod until the
actuator stroke matches the required valve stroke.
6. Turn the internal limit stop (slotted ring nut) with a
screwdriver clockwise until it is touching the drive sleeve.
Finally, turn it back approx. 1 turn.
7. Tighten both Allen screws to the required torque.
RSD10 / RSD20:
26 Nm (19.18 lbf-ft)
RSD50:
26 Nm (19.18 lbf-ft)
RSD100:
40 Nm (29.5 lbf-ft)
8. Reattach the cover for the thrust rod.
9. Screw in the lateral screw plug.
10. Fill the oil according to mounting position.
Change from two to one column
Assembly with the final control element
1. Retract the thrust rod fully and place the actuator onto the
valve yoke.
2. Make sure the valve stem is aligned with the center of the
bore and at right angles to the actuator seat (permissible
parallel deviation < 0.1 mm (0.009 in) in relation to the total
stroke).
3. Fasten the actuator on the valve yoke using slightly oiled
screws of property class 8.8 (tensile strength 800 N/mm
[116,032 lbf/in
).
m
Note
Observe the fastening torques and thread dimensions in the
actuator flange!
Actuator
LME
RSD10 / RSD20
RSD50
RSD100
4. Use the handwheel to extend the thrust rod; link the rod with
the valve stem via the coupling.
5. Manually retract the thrust rod to check whether or not the
external limit stop of the actuator is on the housing flange
before the valve cone touches the cover.
6. If required, adjust with the coupling (only possible within
certain limits!).
2
]; yield strength 640 N/mm
Tightening torque
20 Nm (14.75 lbf-ft)
175 Nm (129.07 lbf-ft)
340 Nm (250.77 lbf-ft)
340 Nm (250.77 lbf-ft)
13
2
2
2
[93,550 lbf/in
]).
Flange thread
M8-15 deep
M16-20 deep
M20-25 deep
M20-25 deep
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