Samson 3271 Mounting And Operating Instructions - page 3
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 fittings .........................................................................................24
6 Operation ...................................................................................................25
6.1
Throttling service ..........................................................................................25
6.2
On/off service .............................................................................................25
6.3
Reversal of the direction of action ..................................................................25