Contents
EB 8310-8 EN 3
1 Safety instructions and measures ...................................................................5
1.1 Notes on possible severe personal injury .........................................................7
1.2 Notes on possible personal injury ...................................................................7
1.3 Notes on possible property damage ................................................................8
2 Markings on the device ...............................................................................10
2.1 Actuator nameplate ......................................................................................10
3 Design and principle of operation ................................................................12
3.1 Direction of action ........................................................................................12
3.2 Signal pressure routing .................................................................................12
3.3 Fail-safe action ............................................................................................12
3.3.1 Version with direction of action "actuator stem extends" (FA) ...........................12
3.3.2 Version with direction of action "actuator stem retracts" (FE) ............................14
3.4 Technical data .............................................................................................14
4 Measures for preparation............................................................................16
4.1 Unpacking ..................................................................................................16
4.2 Transporting and lifting ................................................................................16
4.2.1 Transporting ................................................................................................17
4.2.2 Lifting ..........................................................................................................17
4.3 Storage .......................................................................................................18
4.4 Preparation for installation ............................................................................19
5 Mounting and start-up.................................................................................20
5.1 Mounting the actuator onto the valve .............................................................20
5.2 Preloading the springs ..................................................................................22
5.2.1 Tensioning the springs ..................................................................................22
5.2.2 Increasing the actuator thrust ........................................................................22
5.2.3 Adapting the travel range .............................................................................24
5.3 Additional ttings .........................................................................................24
6 Operation...................................................................................................25
6.1 Throttling service ..........................................................................................25
6.2 On/off service .............................................................................................25
6.3 Reversal of the direction of action ..................................................................25
