Samson 2408 Mounting And Operating Instructions

Contents

Samson 2408 Mounting And Operating Instructions Manual pdf 7 page image

When tapping the pressure at a straight pipe-line section, observe a minimum distance ofat least twice the nominal valve size to theregulator.Connect the control lines to the side or top ofthe main horizontal pipeline. If possible, in-stall the tapping connection in a pipe expan-sion.Install other fittings that may cause flow turbu-lence (e.g. shut-off valves, restrictions, bows,bends or branches) at an appropriate dis-tance to the control line connection (at leastthree times the nominal valve size).Note! If the gas to be controlled containsmoisture, condensate may form in the controlline, which can damage the regulator. To al-low the gas to flow back into the tank or pipe-line, install the control line with a downwardslope of approx. 10 % towards the pressuretapping point.3 Operation3.1 Start-upSee also Fig. 2, page 5.NOTICEDo not start up the regulator before all com-ponents have been installed.Make sure the control line is free of dirt orother contaminations that may impair theproper medium flow.Connect the line properly.We recommend to open shut-off valvesslowly from the downstream side. Avoidpressure surges.NOTICEThe max. permissible pressure at the operat-ing diaphragm must not exceed 0.5 bar withA = 1200 cm², 1 bar with A = 640 cm²,2 bar with A = 320 cm² and 4 bar with A =160 cm².Make sure this pressure is not exceeded, par-ticularly when pressure-testing the plant withthe regulator installed or when starting up theplant.3.2 Adjusting the set pointAdjust the desired set point by tensioning theset point springs using the set point adjuster(SW 27/¾" adjustment screw).4 Remove the cap (10).4 Turn the adjustment screw using a socketwrench with width across flats SW 27.4 Turn the adjuster clockwise P to increasethe set point and counterclockwise Q toreduce it.4 Remount the cap.EB 2528 EN 7OperationFig. 4 · Set point adjustment; view from topAdjustment screwSW 27 (¾")