Samson 2488 N Mounting And Operating Instructions

Type 2488 N/5857 Mounting and Operating Instructions EB 3136 EN Edition December 2011 Fig. 1 · Type 2488 N/5857 Flow Regulator with Electric Actuator

2 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 Mounting position. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 Strainer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Shut-off valves, pressure gauges . . . . . . . . . . . . . . . . . . . . . 5 2.4 Mounting the actuator . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4 Operation · Set point adjustment . . . . . . . . . . . . . . . . . . . . 7 5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Nameplates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 9 Customer inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2 EB 3136 EN Contents CAUTION! indicates a hazardous situation which, if not avoided, could result in death or serious injury. Live parts are freely accessible! NOTICE indicates a property damage message. Note: Supplementary explanations, informa- tion and tips Definitions of the signal words used in these instructions

3 General safety instructions  The flow regulator with electric actuator must be installed, started up and serviced only by skilled or semi-skilled staff in accordance with good engineering practice so that employees and third persons are not exposed to danger. All safety instructions and warnings given in these mounting and operating instructions, particularly those concerning installation, start-up and maintenance, must be strictly observed.  The regulator complies with the requirements of the European Pressure Equipment Directive 97/23/EC. The declaration of conformity issued for a valve bearing the CE marking includes information on the applied conformity assessment procedure and will be provided on request.  To ensure appropriate use, only use the regulator in applications where the operating pressure and temperatures do not exceed the operating values specified in the order. Note that the manufacturer does not assume any responsibility for damage caused by external forces or any other external factors. Take appropriate safety precautions to prevent hazards that may be caused in the regulator by the process medium, operating pressure, signal pressure, or moving parts.  Make sure the regulator is shipped and stored properly.  Depending on the field of application, allow the regulator to cool down or warm up to reach ambient temperature prior to starting any work. Always depressurize the relevant section of the plant and, if necessary, also drain the pipeline prior to installing or servicing the regulator.  The electric actuator has been designed for use in electrical power installations. Strictly observe the relevant safety regulations for wiring and maintenance work.  Only use disconnect devices that are protected against accidental or unintentional reconnection. Take special care when making adjustments on live parts. Do not remove the covers under any circumstances.

operation The device combines a Type 2488 N Flow Regulator and a Type 5857 Electric Actuator. The electric actuator is attached to the valve by means of the connecting piece and allows also the temperature to be controlled by changing the position of the restriction in re- sponse to the control signal received from an electric control device. The medium flows through the valve in the direction indicated by the arrow on the valve body. The flow rate depends on the flow passage defined by the valve plug (3) and the restriction (11). The integral positioning spring (5) determines the upper differential pressure (0.2 bar). The high pressure upstream of the restriction (11) is transmitted to the high-pressure side of the diaphragm actuator through the control line (7). The low pressure downstream of the re- striction acts on the low-pressure side of the operating diaphragm (9) via a bore in the valve plug. The differential pressure generated by the restriction (special differen- tial pressure) is converted into a positioning force by the operating diaphragm. This force is used to position the valve plug against the force of the positioning spring (5). The flow rate can be adjusted by turning the set point screw (13). 4 EB 3136 EN Design and principle of operation 1 11 12 17 18 2 6 7 4 5 3 14 16 13 8 9 10 15 Fig. 2 · Schematic diagram 1 Valve body 2 Seat 3 Valve plug 4 Plug stem 5 Positioning spring 6 Diaphragm actuator 7 High-pressure control line 8 High-pressure side 9 Operating diaphragm 10 Low-pressure side 11 Restriction 12 Restriction stem 13 Set point screw 14 Connecting piece 15 Spring 16 Electric actuator 17 Coupling nut 18 Actuator stem

pipeline with its diaphragm actuator sus- pended downward.  Make sure that the electric actuator is above the valve body.  Make sure that the medium flows through the regulator in the direction indicated by the arrow on the valve body. NOTICE Choose a point of installation which will pro- vide easy access to the regulator after com- pletion of the plant. Flush the pipeline thoroughly before installa- tion. Make sure the permissible ambient tempera- ture will not be exceeded. If the valve is to be insulated, do not insulate the actuator and the coupling nut. If necessary, use an exten- sion piece (order no. 1690-6975). The valve should not be insulated more than approx. 25 mm above the top edge of its body. 2.2 Strainer Install a strainer (SAMSON Type 1 NI) up- stream of the regulator to prevent sealing particles, weld spatter, pipe scale, and other impurities carried along by the process me- dium from impairing the proper operation, especially the tight shut-off of the valve.  Make sure that the medium flows through the strainer in the direction indicated by the arrow on the strainer body.  Install the strainer with the filter element vertically suspended. Ensure that ample space is available to remove the filter. 2.3 Shut-off valves, pressure gauges We recommend installing hand-operated shut-off valves both upstream of the strainer and downstream of the flow regulator. This allows the plant to be shut down (depressurized) for cleaning and mainte- nance routines, or when it is not operated for long periods of time. To monitor the pressures prevailing in the plant, install pressure gauges both upstream and downstream of the flow regulator. NOTICE When carrying out a pressure test on the sec- tion of the plant equipped with a pressure regulator, prevent the diaphragm actuator from being damaged by the test pressure by using a test pressure which does not exceed the maximum permissible pressure p of the actuator. 2.4 Mounting the actuator See Fig. 2 on page 4. Place the actuator (16) onto the valve con- nection and manually fasten it using the cou- pling nut (17). EB 3136 EN 5 Installation

CAUTION! When laying electric lines, strictly observe the regulations governing the erection of power installations defined by DIN VDE 0100 as well as the regulations specified by your local power supply company. Use a suitable power supply which guarantees that no dangerous volt- ages will reach the device in standard operation or in case of a fault in the system or any system parts. Always switch off the power supply first prior to connecting the actuator to the electrical network. Make sure the power cannot be switched on un- intentionally. The supply voltage is 230 V ( 10 %) or 24 V ( 10 %), 50 Hz. Refer to EB 5857 EN for more details. Use the three-wire connecting cable attached to the actuator to establish the electrical con- nection (Fig. 3). If a voltage is applied between the white and the green cable, the motor will retract the ac- tuator stem (18) into the actuator. The restric- tion stem will be pushed upward by the spring (15) and the flow rate will increase. If, however, a control signal is applied to the white and the brown cable, the actuator stem extends. The restriction stem will be pushed downward and the flow rate will decrease. 6 EB 3136 EN br wh gr aL eL L N Ce Ce eL aL br bl ye gr rd or 24 V, 50 Hz 0...10 V 0...10 V _ + _ + N L Electrical connection eL Actuator stem retracts aL Actuator stem extends Note: Decoupling capacitors Ce in the output cir- cuit of the connected controller must not exceed a value of 2.5 nF in order to guarantee the proper functioning of the actuator. br wh gr aL eL L N Ce Ce eL aL Fig. 3 · Electrical connection

adjustment See Fig. 2 on page 4. The flow rate can be adjusted, both with and without the electric actuator mounted. Prior to adjusting the flow rate on a regulator with the electric actuator mounted, make sure the actuator stem (18) is retracted. Note: Prior to starting up or pressurizing the regulator, make sure that the restriction for limiting the flow is open. To adjust or alter the flow set point, proceed as follows: The set point adjustment is always based on a closed restriction. NOTICE Use the SAMSON manual adjustment (1790-8169) to close the restriction. Do not use the set point screw (13). Remove the manual adjustment again and use an Allen key (4 mm) at the set point screw (13) at the side to adjust the flow set point.  Determine the number of turns required to set the desired flow rate from the dia- gram (Fig. 4).  Turn set point screw (13) counterclock- wise the required number of turns. For exact adjustment, check the set value using a flow meter.  Turn the set point screw (13) clockwise to close the restriction and decrease the flow rate.  Turn the set point screw counterclockwise to open the restriction and increase the flow rate. 5 Troubleshooting If the flow rate deviates considerably from the adjusted set point, first check the control line for any blockages. If the valve does not seal properly, this may be because tight shut-off is prevented by dirt between the seat and plug or due to natural wear. Check the regulator for leaks and re- place it, if necessary. EB 3136 EN 7 Operation · Set point adjustment 0.1 0.5 1 1 0 2 3 4 5 V˚ m3/h 0.2 2 2.5 1.0 Kvs Fig. 4 · Adjustment diagram for flow rate Turns of set point screw

ulator or removing it from the pipe- line, allow the relevant section of the plant to cool down to working tem- perature if high temperatures prevail and make sure that the pipeline con- cerned is depressurized and drained. 6 Nameplates Nameplate of Type 2488 N Valve 8 EB 3136 EN Nameplates Description of the nameplate: 1 Model number with index 2 Year of manufacture 3 Type 4 Flow set point range in m 3/h 5 Upper differential pressure in bar 6 Max. perm. differential pressure in bar 7 Flow coefficient KVS 8 Max. perm. temperature in °C 9 Nominal pressure PN 1 2 2 3 5 6 7 9 8 Description of the nameplate: 1 Nominal thrust, rated travel actuating time, electrical connection 2 Configuration ID 3 Serial number Nameplate of Type 5857 Electric Actuator 1 SAMSON 5857 2 3 Electric Actuator Made in Germany

9 Dimensions 7 Dimensions Ø95 114 65 ~65 120 ISO 228/1-G ¾ B ~70 Ø12 55 80 11 32 70 SW30 129 G½ Threaded ends SW30 210 Ø21.3 Welding ends Soldering ends · Dimensions in mm Internal Ø di 15 18 Length L 107 103 80 Intermediate insulating piece SW30 L Ø21.3 di Soldering ends Fig. 5 · Dimensional drawings (dimensions in mm)

Rated travel 6 mm Actuating time for rated travel 20 s Nominal thrust 300 N Supply voltage 230 V/24 V (10 %) 50 Hz Power consumption Approx. 3 VA Perm. ambient temperature 0 to 50 °C Perm. storage temperature –20 to 70 °C Degree of protection IP 42 Noise immunity EN 61000-6-2 Noise emission EN 61000-6-3 Weight Approx. 0.7 kg Materials Body CC491K Plug 1.4301 with EPDM sealing ring Restriction Brass resistant to dezincification Diaphragm EPDM without fabric 10 EB 3136 EN Technical data Type 2488 N Valve Nominal size DN 15 Nominal pressure PN 10 Max. perm. diff. pressure p 4 bar Flow coefficient KVS Standard version Special version 2.5 1.0 Max. perm. temperature Treated water Non-flammable gases 110 °C 80 °C Flow set point range / flow lim- itation for water at upper differ- ential pressure of 0.2 bar Standard version Special version 0.3 to 1m 3/h 0.1 to 0.5 m 3/h Upper differential pressure 0.2 bar Materials Body Plastic PPO Coupling nut Brass Intermediate insulating piece 1.4306, CW617N, PTFE, EPDM, FPM

SAMSON's After-Sales Service is prepared to help you on site. You can also send the defective regulator di- rectly to your local SAMSON representative for repair. Addresses of SAMSON subsidiar- ies, agencies and service centers are listed in the product catalogs and in the Internet at www.samson.de. To allow SAMSON to find the fault and to have an idea of the installation situation, specify the following details (see nameplate):  Type and nominal size of the regulator  Model number with index  Var.-ID and serial number of actuator  Upstream and downstream pressure  Process medium and its temperautre  Minimum and maximum flow rate in m³/h  Has a strainer been installed?  Installation drawing EB 3136 EN 11 Customer inquiries

Weismüllerstraße 3 · 60314 Frankfurt am Main · Germany Phone: +49 69 4009-0 · Fax: +49 69 4009-1507 Internet: http://www.samson.de EB 3136 EN S/Z 2011-12