ContentsEB 8052 EN 31 Safety instructions and measures ...................................................................51.1 Notes on possible severe personal injury .........................................................81.2 Notes on possible personal injury ...................................................................81.3 Notes on possible property damage ................................................................92 Markings on the control valve ......................................................................122.1 Valve nameplate ..........................................................................................122.2 Actuator nameplate......................................................................................132.3 Material number ..........................................................................................133 Design and principle of operation ................................................................143.1 Fail-safe positions ........................................................................................143.2 Versions ......................................................................................................163.3 Technical data .............................................................................................164 Measures for preparation ............................................................................244.1 Unpacking ..................................................................................................244.2 Transporting and lifting ................................................................................244.2.1 Transporting ................................................................................................254.2.2 Lifting..........................................................................................................254.3 Storage .......................................................................................................284.4 Preparation for installation ............................................................................295 Mounting and start-up .................................................................................305.1 Mounting the actuator onto the valve .............................................................305.2 Installing the valve into the pipeline ...............................................................315.2.1 Checking the installation conditions ...............................................................315.2.2 Additional fittings.........................................................................................325.2.3 Installing the control valve .............................................................................335.3 Quick check ................................................................................................346 Operation ...................................................................................................366.1 Working in manual mode .............................................................................367 Servicing.....................................................................................................387.1 Replacing the gasket ....................................................................................397.1.1 Standard version..........................................................................................397.1.2 Version with insulating section or bellows seal ................................................41