Title: Siemens STA73-eng (1).pdf
Seldom may happen that the actuator will be released from the valve together with the valve whereby the bayonet-nut stuck in the actuator. In order to re-use the actuator, the actuator’s stem has to be re-set to the original position (factory setting). For this purpose, turn the actuator up-side-down and push back the stem with simultaneous counter clock wise turning of the sliding sleeve, bayonet-ring, until latching.WarningDo not use pipe wrenches, spanners or similar!Mounting positionsActuators may be installed in all positions (IP54 standard guaranteed).12 / 16Siemens Building TechnologiesElectrothermal actuators STA..3.., STP..3..CE1N4884en 03.05.2012Notes on electrical installationMaintenanceRepairDisposalWarrantySiemens Building Technologies360°