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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

Samson 3277-5 Original Instructions

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