Samson 3321CT Mounting And Operating Instructions

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Samson 3321CT Mounting And Operating Instructions Manual pdf 20 page image

20 EB 8115 ENMounting and start-up5 Mounting and start-upSAMSON valves are delivered ready foruse. In special cases, the valve and actuatorare delivered separately and must be assem-bled on site. Proceed as follows to mountand start up the valve.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 AB 0100).Risk of valve damage due to the use of un-suitable tools.Only use tools approved by SAMSON(u AB 0100).Risk of contamination of the process mediumthrough the use of unsuitable lubricant and/or contaminated tools and components.− Keep the valve and the tools used free fromsolvents and grease.− Make sure that only suitable lubricants areused.5.1 Mounting the actuator ontothe valve1. Make sure that the valve is completelyopen (the plug stem is completely retract-ed).Version with "actuator stem extends"fail-safe action: apply a signal pressurethat corresponds to the upper benchrange value to the connection on the bot-tom diaphragm chamber.Version with "actuator stem retracts"fail-safe action: make sure that no signalpressure is applied to the actuator.2. Undo the hexagon screws (10) on thevalve bonnet (7).3. Lift the flange (14), valve bonnet (7) to-gether with the plug and plug stem (3)off the body (1).4. Apply a suitable thread-locking fluid tothe female thread of the actuator stem.5. Screw the plug stem (3) into the actuatorstem. Observe tightening torques.6. Apply a suitable lubricant to the threadof the valve bonnet (7).7. Screw the valve bonnet (7) into the actu-ator base until it reaches the metal stop.Observe tightening torques.8. Carefully place the actuator, valve bon-net (7), flange (14) and plug with plugstem (3) onto the body (1).Make sure that the marking on the valvebonnet are aligned with the front of thevalve (see Fig. 6).NOTICE!NOTICE!NOTICE!