Samson 3271, Original Instructions Manual, Page: 3 / 72

Contents
EB 8310-6 EN
1 Safety instructions and measures ................................................................1-1
1.1 Notes on possible severe personal injury ...................................................... 1-3
1.2 Notes on possible personal injury ................................................................ 1-4
1.3 Notes on possible property damage ............................................................. 1-5
1.4 Warnings on the device ............................................................................... 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 Type 3271 .................................................................................................. 3-1
3.2 Type 3277 .................................................................................................. 3-2
3.3 Direction of action ....................................................................................... 3-2
3.4 Signal pressure routing ................................................................................ 3-3
3.4.1 Type 3271 .................................................................................................. 3-3
3.4.2 Type 3277 .................................................................................................. 3-3
3.5 Fail-safe action ........................................................................................... 3-3
3.5.1 Version with direction of action "actuator stem extends" ................................. 3-3
3.5.2 Version with direction of action "actuator stem retracts" ................................. 3-4
3.6 Versions ..................................................................................................... 3-4
3.7 Accessories ................................................................................................ 3-4
3.8 Technical data ............................................................................................ 3-5
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 ............................................................................. 4-2
4.3.2 Lifting the actuator ...................................................................................... 4-2
4.4 Storing the actuator ..................................................................................... 4-5
5 Mounting and assembly .............................................................................5-1
5.1 Preparation for installation ........................................................................... 5-1
5.2 Mounting the device .................................................................................... 5-1
5.2.1 Mounting the actuator onto the valve ............................................................ 5-2
5.2.2 Connecting the air supply ............................................................................ 5-4