February 2019
User Instructions
MAN-02-04-60-0350-EN Rev. 3
13
Section 4: Installation Instructions
Installation Instructions
4.2
Mechanical Connection
1.
Check that the actuator flange, the linear unit flanges and the valve flange match.
2.
Thoroughly clean mounting 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 clockwise.
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 clockwise.
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.
NOTE:
For output type A (unbored threaded bushing), you must sufficiently lubricate both needle
bearings in the output form after processing and cleaning the spindle nut.
For this purpose, use the optional Bettis RTS CL grease lubricant or a grease lubricant
according to our recommendation (see Section 14).
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 actuator.
3.
Open the spindle coupling between the linar 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.
