Samson 42-36 Mounting And Operating Instructions

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

Contents

Samson 42-36 Mounting And Operating Instructions Manual pdf 9 page image

cleaning and maintenance, and when theplant is not used for longer periods of time.2.5 Pressure gaugeTo monitor the pressures in the plant, install apressure gauge both upstream and down-stream of the regulator.3 Operation3.1 Start-upCAUTION!First start up the regulator after mounting allthe components, e.g. valve, actuator and con-trol line.Make sure the control line (and needle valve)is open and correctly connected beforestart-up.For media temperatures above 150 °C(steam), fill the equalizing tank with the pro-cess medium (water) before start-up.Note: On filling the plant, make sure the re-striction (1.1) is open by turning the adjust-ment screw counterclockwise as far as it willgo.4 Open all the valves on the consumer side.Slowly open the shut-off valves starting onthe return flow pipe first. In case of valvesbalanced by a bellows in DN 125 orlarger, vent the bellows housing at thestopper (8) located at the side of the bel-lows housing.Rinsing the plant · After filling the plant, firstcompletely open the consumers. Open the re-striction. Rinse out the pipeline at full flow ratefor several minutes. Check the installedstrainer (e.g. by measuring the pressuredrop) afterwards. Clean the strainer, if neces-sary.NOTICEWhen testing the pressure of the plant whenthe regulator is already installed, the pressuremust not exceed the nominal pressure of thevalve by 1.5 times nor the maximum permissi-ble differential pressure in the actuator.3.2 Set point adjustmentThe control valves and shut-off valves as wellas all consumers or a bypass valve, if appli-cable, must be opened to allow the maximumflow rate to be reached.Turn the restriction (1.1) until the requiredflow rate is reached, by reading, for exam-ple, the flow rate reading off a heat meter (re-fer to Table 1 · Flow rate set point ranges).Note: Always start the adjustment from aclosed restriction!4 Turn clockwise to close the restriction. Thisreduces the flow rate.4 Turn counterclockwise to open the restric-tion. This raises the flow rate.You can also use the adjustment diagrams forwater in Figs. 5 to 7 to help you make the flowrate adjustment.EB 3015 EN 9Operation