Samson 3374-11 - 1 Safety instructions and measures; 1.1 Notes on possible severe personal injury; 1.2 Notes on possible personal injury; 2 Markings on the device

Contents
EB 8331-4 EN 3
1 Safety instructions and measures ...................................................................6
1.1 Notes on possible severe personal injury .........................................................9
1.2 Notes on possible personal injury ...................................................................9
1.3 Notes on possible property damage ..............................................................10
2 Markings on the device ...............................................................................11
2.1 Nameplate ..................................................................................................11
3 Design and principle of operation ................................................................12
3.1 Versions ......................................................................................................12
3.2 Limit contacts ...............................................................................................13
3.2.1 Mechanical limit contacts ..............................................................................13
3.2.2 Electronic limit contacts ................................................................................. 13
3.3 Manual override ..........................................................................................13
3.3.1 Mechanical override ....................................................................................13
3.3.2 Moving the actuator stem manually ...............................................................13
3.4 Communication ...........................................................................................14
3.5 Device overview and operating controls .........................................................14
3.6 Technical data .............................................................................................16
3.7 Dimensions in mm ........................................................................................ 20
4 Measures for preparation ............................................................................22
4.1 Unpacking ..................................................................................................22
4.2 Transporting and lifting ................................................................................22
4.2.1 Transporting ................................................................................................22
4.2.2 Lifting ..........................................................................................................22
4.3 Storage .......................................................................................................22
5 Mounting and start-up ................................................................................. 23
5.1 Mounting the actuator onto the valve .............................................................23
5.1.1 Mounting position ........................................................................................23
5.1.2 Construction with integrated yoke ..................................................................24
5.1.3 Construction with ring nut .............................................................................24
5.2 Electrical connections ...................................................................................26
5.2.1 Connecting the power supply ........................................................................26
6 Additional functions ....................................................................................28
6.1 Mechanical limit contacts ..............................................................................28
6.1.1 Installing the limit contacts ............................................................................28
6.1.2 Adjusting the limit contacts ...........................................................................32
6.2 Electronic limit contacts ................................................................................. 32
6.2.1 Installing the limit contacts ............................................................................32
6.2.2 Adjusting the limit contacts ...........................................................................33