Samson 42-36 E Mounting And Operating Instructions

Also see for 42-36 E: Mounting and operating instructions

EB 3018 EN 8-1Malfunctions8 Malfunctions8.1 TroubleshootingMalfunction Possible reasons Recommended actionFlow rate exceedsadjusted set point.Insufficient pressure pulses on the oper-ating diaphragm Î Clean the control line and screw fittings.Foreign particles blocking the plugÎ Remove foreign particles.Î Replace damaged parts.Î Contact SAMSON's After-sales Service.Seat and plug are worn or leak. Î Replace the damaged seat and plug.Î Contact SAMSON's After-sales Service.Valve too large for control task (flowrate) or too small (differential pressure)Î Check the sizing.Î Change KVS/CV coefficient, if necessary or in-stall a different sized regulator.Î Contact SAMSON's After-sales Service.Defective operating diaphragm Î Replace damaged diaphragm.Flow set point notreached.Regulator installed against the flowÎ Install the regulator so that the direction of flowmatches the direction indicated by the arrow onthe body.Regulator or KVS/CV coefficient toosmallÎ Check the sizing.Î Change KVS/CV coefficient, if necessary or in-stall a different sized regulator.Î Contact SAMSON's After-sales Service.Incorrect set point range selected Î Check set point rangeÎ Contact SAMSON's After-sales Service.Safety device, e.g. pressure limiter, hasbeen triggered Î Check plant. If necessary, unlock safety device.The fail-safe action of the actuator hasbeen triggered.Î Check the plant and place the actuator back in-to operation.Plant differential pressure Δp too lowÎ Compare differential pressure in the plant withthe plant’s drag.Differential pressure across the plant:∆pmin = ∆prestriction + (V/KVS)²Foreign particles blocking the plugÎ Remove foreign particles.Î Replace damaged parts.Î Contact SAMSON's After-sales Service..