![background image](http://html2.mh-extra.com/html/samson/3277/3277_mounting-and-operating-instructions_3787814003.webp)
Contents
EB 8310-5 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 ................................................................11
3.1
Type 3271 ...................................................................................................11
3.2
Type 3277 ...................................................................................................12
3.3
Direction of action ........................................................................................12
3.4
Signal pressure routing .................................................................................12
3.4.1
Type 3271 ...................................................................................................12
3.4.2
Type 3277 ...................................................................................................12
3.5
Fail-safe action ............................................................................................14
3.5.1
Version with direction of action "actuator stem extends" (FA) ...........................14
3.5.2
Version with direction of action "actuator stem retracts" (FE) ............................14
3.6
Versions ......................................................................................................14
3.7
Technical data .............................................................................................14
4
Measures for preparation ............................................................................18
4.1
Unpacking ..................................................................................................18
4.2
Transporting and lifting ................................................................................18
4.2.1
Transporting ................................................................................................18
4.2.2
Lifting ..........................................................................................................19
4.3
Storage .......................................................................................................20
4.4
Preparation for installation ............................................................................21
5
Mounting and start-up .................................................................................22
5.1
Mounting the actuator onto the valve .............................................................22
5.2
Preloading the springs ..................................................................................24
5.2.1
Compressing the springs ...............................................................................24
5.2.2
Increasing the actuator thrust ........................................................................25
5.2.3
Adapting the travel range .............................................................................25
Summary of Contents for 3277
Page 46: ...46 EB 8310 5 EN...
Page 47: ...EB 8310 5 EN 47...