5 Commissioning
Operation manual for linear units type LK
DS-ENGLISH-SCHUB-LK-V1.00-2020.03.23
Never bring the valve cone with excessive force in the CLOSED position. This can damage the high-
quality sealing edges.
4.2 Assembly
1. Check that the actuator flange, the linear unit flanges and the valve flange match.
2. Thoroughly clean screw-on surfaces and bare parts on actuator, linear unit and valve.
3. Lightly grease the connections of the actuator, the linear unit and the valve.
4. Grease the spindle of the linear unit.
5. Move the valve cone in the CLOSED position.
6. Turn the spindle nut until the linear unit is in a central position.
7. Mount the linear unit on the valve and tighten the screws crosswise. The coupling between the linear unit
and the valve will be connected later.
8. Mount the actuator on the linear unit and tighten the screws crosswise.
9. Extend the spindle by rotating the handwheel until the coupling of the linear unit and the valve fit together.
10. Connect the coupling between linear unit and valve.
11. Use the handwheel to move the linear unit to a center position, to prevent accidental damage to the valve
during startup.
4.3 Disassembly
1. If the valve is fully closed, move the valve cone to about ten percent OPEN position
2. Loosen the screws between the output flange of the actuator and the linear unit and dismount the actua-
tor.
3. Open the spindle coupling between the linear unit and the valve.
4. Loosen the screws between the output flange of the linear unit and the valve.
5. Dismount the linear unit from the valve.
5 Commissioning
See chapter „Commissioning“ in the standard user manual.
6 Maintenance
Pay attention to increased running noises, occur on them, grease the two lubrication nipples of the linear unit
to lubricate the bearings and the spindle guidance.
Regularly check the fixing screws between the actuator, the linear unit and the valve for firm hold, if necessary
tighten them with the torques specified in chapter „Installation instuctions“ of the standard user manual.
6.1 Moving interval
The linear unit should be actuated at least every 3 months.
6.2 Greasing intervall
Every 6 months the linear unit should be re-greased via the greasing nipples .
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