Samson 3251 Mounting And Operating Instructions

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Samson 3251 Mounting And Operating Instructions Manual pdf 39 page image

EB 8052 EN 39ServicingRisk of valve damage due to the use of un-suitable lubricants.Only use lubricants approved by SAMSON(see parts list).The control valve was checked by SAMSONbefore it left the factory.− Certain test results (seat leakage and leaktest) certified by SAMSON lose their validi-ty when the valve body or actuator hous-ing is opened.− The product warranty becomes void if ser-vice or repair work not described in theseinstructions is performed without prioragreement by SAMSON's After‑sales Ser-vice department.− Only use original spare parts by SAM-SON, which comply with the original spec-ifications.7.1 Replacing the gasketRisk of control valve damage due to incorrectservice or repair.The gasket can only be replaced when all thefollowing conditions are met:− The valve size is ≤NPS 4.− The valve does not have a balanced plug.− The valve does not have a flow divider.To replace the gasket in other valve versions,contact SAMSON's After‑sales Service de-partment.7.1.1 Standard version1. Remove the actuator from the valve. Seeassociated actuator documentation.2. Undo the body nuts (14) gradually in acrisscross pattern.3. Lift the flange (2) and plug with plugstem (5) off the body (1).4. Remove the gasket (17). Carefully cleanthe sealing faces in the valve body (1)and on the flange (2).5. Insert a new gasket (17) into the body.6. Place the flange (2) onto the body.Version with V-port plug: place theflange (2) onto the valve body, makingsure that the largest V-shaped port of theV-port plug faces toward the valve outlet.See section 5.1.7. Firmly press the plug (5) into the seat (4).Fasten down the flange (2) with the bodynuts (14). Tighten the nuts gradually in aNOTICE!NoteNOTICE!