Samson 3251 Mounting And Operating Instructions

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Samson 3251 Mounting And Operating Instructions Manual pdf 38 page image

38 EB 8052 ENServicing7 ServicingThe control valve is subject to normal wear,especially at the seat, plug, and packing.Depending on the operating conditions,check the valve at regular intervals to pre-vent possible failure before it can occur.SAMSON's After‑sales Service departmentcan support you to draw up an inspectionplan for your plant.We recommend removing the valve from thepipeline for service or repair work (see sec-tion 9.2).Risk of bursting in pressure equipment.Control valves and pipelines are pressureequipment. Improper opening can lead tobursting of the valve.− Before starting any work on the controlvalve, depressurize all plant sections con-cerned as well as the valve.− Drain the process medium from all theplant sections concerned as well as thevalve.− Wear personal protective equipment.Risk of personal injury due to residual pro-cess medium in the valve.While working on the valve, residual processmedium can escape and, depending on itsproperties, may lead to personal injury, e.g.(chemical) burns.Wear protective clothing, safety gloves, andeyewear.Risk of burn injuries due to hot or cold com-ponents and pipeline.Valve components and the pipeline may be-come very hot or cold. Risk of burn injuries.− Allow components and pipelines to cooldown or heat up.− Wear protective clothing and safety gloves.Risk of valve damage due to incorrect servic-ing or repair.Service and repair work must only be per-formed by trained staff.Risk of valve damage due to excessively highor low tightening torques.Observe the specified torques on tighteningcontrol valve components. Excessively tight-ened torques lead to parts wearing outquicker. Parts that are too loose may causeleakage.Observe the specified tightening torques(u WA 0029).Risk of valve damage due to the use of un-suitable tools.Only use tools approved by SAMSON(u WA 0029).TipDANGER!WARNING!WARNING!NOTICE!NOTICE!NOTICE!