Samson 3372 - Default Chapter; Table of Contents

Contents
EB 8313-3 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ......................................................1-4
1.2 Notes on possible personal injury ................................................................1-5
1.3 Notes on possible property damage .............................................................1-6
2 Markings on the device ..............................................................................2-1
2.1 Actuator nameplate .....................................................................................2-1
2.2 Label indicating actuator with preloaded springs ...........................................2-2
3 Design and principle of operation ...............................................................3-1
3.1 Direction of action .......................................................................................3-1
3.2 Signal pressure routing ................................................................................3-4
3.3 Fail-safe action ...........................................................................................3-4
3.3.1 Version with direction of action "stem extends" ..............................................3-4
3.3.2 Version with direction of action "stem retracts" ..............................................3-5
3.4 Mounting types ...........................................................................................3-5
3.5 Versions .....................................................................................................3-6
3.6 Accessories ................................................................................................3-6
3.7 Technical data ............................................................................................3-7
4 Shipment and on-site transport ...................................................................4-1
4.1 Accepting the delivered goods .....................................................................4-1
4.2 Removing the packaging from the actuator ...................................................4-1
4.3 Transporting and lifting the actuator .............................................................4-1
4.3.1 Transporting the actuator .............................................................................4-1
4.3.2 Lifting the actuator ......................................................................................4-2
4.4 Storing the actuator .....................................................................................4-2
5 Mounting and assembly .............................................................................5-1
5.1 Preparation for mounting .............................................................................5-1
5.2 Mounting the device ....................................................................................5-1
5.2.1 Mounting the actuator onto the valve ............................................................5-2
5.3 Connections................................................................................................5-6
6 Start-up .....................................................................................................6-1
6.1 Preloading the springs .................................................................................6-2
6.1.1 Tensioning the springs .................................................................................6-2
6.1.2 Increasing the actuator thrust .......................................................................6-3
6.1.3 Adapting the travel range ............................................................................6-3
6.2 Adjusting the travel stop ..............................................................................6-3
6.2.1 Bottom travel stop (minimum travel) ..............................................................6-5
6.2.2 Top travel stop (maximum travel) ..................................................................6-5