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Contents

EB 8331-3 EN

1 Safety instructions and measures ................................................................1-1

1.1 Notes on possible severe personal injury ......................................................1-4

1.2 Notes on possible personal injury ................................................................1-5

1.3 Notes on possible property damage .............................................................1-6

2 Markings on the device ..............................................................................2-1

2.1 Nameplate .................................................................................................2-1

3 Design and principle of operation ...............................................................3-1

3.1 Fail-safe action ...........................................................................................3-1

3.2 Versions .....................................................................................................3-1

3.3 Additional equipment ..................................................................................3-2

3.4 Technical data ............................................................................................3-3

3.5 Dimensions .................................................................................................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 the actuator .............................................................................4-1

4.4 Lifting the actuator ......................................................................................4-1

4.5 Storing the actuator .....................................................................................4-2

5 Installation .................................................................................................5-1

5.1 Installation conditions ..................................................................................5-1

5.2 Preparation for installation ...........................................................................5-2

5.3 Mounting the actuator .................................................................................5-2

5.3.1 Constructionwithintegratedyoke(formB) ....................................................5-2

5.3.2 Constructionwithringnut(formA) ...............................................................5-4

5.4 Installing the control valve into the pipeline ...................................................5-7

5.5 Installing additional equipment ....................................................................5-7

5.5.1 Retrottinglimitcontacts ..............................................................................5-7

5.5.2 Installing the resistance transmitters ............................................................5-13

5.6 Electrical connection ..................................................................................5-17

6 Start-up .....................................................................................................6-1

6.1 Adjusting the limit contacts ..........................................................................6-1

6.2 Adjusting the resistance transmitter ...............................................................6-2

7 Operation ..................................................................................................7-1

7.1 Three-step mode .........................................................................................7-1

7.2 Mechanical override ...................................................................................7-1

8 Malfunctions ..............................................................................................8-1

8.1 Emergency action .......................................................................................8-1

9 Servicing....................................................................................................9-1

Samson 3214 Mounting And Operation Instructions

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