Pneumatic ActuatorType 3271Mounting andOperating InstructionsEB 8310 ENEdition October 2004Fig. 1 · Type 3271 ActuatorsType 3271Type 3271-5Type 3271-52Type 3271 with handwheel

Design and principle of operation

Operation

Actuator with handwheel

Replacing the diaphragm and stem seal

Adjusting the travel stop

Manual operation of Type 3271 with side-mounted handwheel

Actuator stem extends when supply air is applied

Description of nameplate

Customer inquiries

Samson 3271 Mounting And Operating Instructions

Safety instructions and measures

Notes on possible severe personal injury

Notes on possible personal injury

Notes on possible property damage

Markings on the device

Version with direction of action "actuator stem retracts" (FE)

Measures for preparation

Transporting

Storage

Preparation for installation

Mounting and start-up

Preloading the springs

Adapting the travel range

Servicing

Malfunctions

Decommissioning and disassembly

Annex

Spare parts

3271

Type 3277

Fail-safe action

Lifting

Increasing the actuator thrust

Additional notes concerning operation

Reversal of the direction of action from stem retracts to stem extends

Version with handwheel

Extending the actuator stem manually

Replacing the diaphragm

Replacing the actuator stem seals

Preparation for return shipment

Disposal

Markings on the control valve

Actuator nameplate

Fail-safe positions

technical data

Preparation

Installing the valve into the pipeline

Additional fittings

Quick check

Maintenance

Replacing the gasket

Version with insulating section or bellows seal

Standard version

Version with insulating section

Replacing the seat and plug

troubleshooting

Emergency action

Removing the actuator from the valve

Appendix

Certificates

declaration of conformity

Direction of action

Version with direction of action "actuator stem extends" (FA)

Technical data

Reversal of the direction of action

Ordering spare parts and operating supplies

Intended use of this manual

General aspects of functional safety

Determining the safety integrity level

Hardware fault tolerance

Intended use of control valves in safety-instrumented systems

General control valve requirements

Globe valve requirements

Ball valve requirements

Butterfly valve requirements

Rotary plug valve requirements

Installation, piping and wiring

Electrical installation

Applicable device documentation

Serial number

Decommissioning and removal

Warnings on the device

Versions

Valve accessories

Shipment and on-site transport

Transporting the valve

Lifting the valve

Storing the valve

Installation

Assembly

Mounting the actuator onto the valve

Testing the installed valve

Leak test

Travel motion

Working in closed-loop operation

Periodic testing

Decommissioning

Preparing the valve for service work

Removal

Removing the valve from the pipeline

Returning devices to SAMSON

Tightening torques, lubricants and tools

Label indicating actuator with preloaded springs

Signal pressure routing

Version with direction of action "actuator stem retracts"

Transporting the actuator

Storing the actuator

Mounting and assembly

Connecting the air supply

Start-up

Manual mode (versions with handwheel only)

Service and conversion work

Relieving the spring compression in the actuator

Conversion work

Repairs


Contents Table Of Contents Design and principle of operation Operation Actuator with handwheel Replacing the diaphragm and stem seal Adjusting the travel stop Manual operation of Type 3271 with side-mounted handwheel Actuator stem extends when supply air is applied Description of nameplate Customer inquiries	Pneumatic ActuatorType 3271Mounting andOperating InstructionsEB 8310 ENEdition October 2004Fig. 1 · Type 3271 ActuatorsType 3271Type 3271-5Type 3271-52Type 3271 with handwheel Next / 16