Samson - EB 8331-1 EN

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Contents

Electric Actuator Type 3374 Fig 1 Type 3374 Actuator mounted on a Type 3535 Three way Valve Mounting and Operating Instructions EB 8331 1 EN Edition October 2007 Contents Contents Page 1 Design and principle of operation 5 1 1 Additional equipment 5 1 2 Technical data 6 2 Installation 8 2 1 Mounting position 8 2 2 Attachment to the valve 8 3 Electrical connections 10 4 Operation and setting 12 4 1 Manual operation of the actuator 12 4 2 Setting the additional equipment 12 4 2 1 Limit switches 12 4 2 2 Potentiometers 12 4 3 Setting the digital positioner 14 5 Retrofitting additional electrical equipment 17 5 1 Limit switches 18 5 2 Potentiometers 20 5 3 Digital positioner 21 5 3 1 Calibrating the positioner 22 5 3 ...