Mounting and operating instructions EB 3132-4 EN
Contents
1. ARO KX XXX gt a e SX Oe SS gt aK N A fect IN N N JE Q N gt TA IN IR IN N J D An FAH MPA le a J 6l 6 7 Seat 5 5 Balle plo ra Tightening to Seat 5 Baffle plate restriction la Ls ae Plug Coupling rod Pos 10 Connection nut 20 Nm Plug stem Connection nut p ce os 3 Positioning spring Control thermostat Actuator Spring Pos 6 2 Screws Operating diaphragm with plates Set point adjuster Screws Operating bellows Control line Capillary tube Mounting part Temperature sensor Plug ONAAAODKRWH Fig 2 Sectional drawing EB 3132 4EN 3 Installation 2 Installation The regulator should generally be installed into the low pressure line e g the return flow pipe When used in district heating sy stems the regulator must only be installed into the return flow pipe 2 1 Mounting position Install the regulator in the horizontal pipeline so that either the actuator or the thermostat is vertically suspended Note that the actuator must face upward and that the thermostat must face downward if the medium temperature exceeds a maximum of 110 C Use the supplied screw joints with weld on fittings for standard connection The medium must flow through the valve in the direction indicated by the arrow on the valve body 2 2 Control line The control line with a pipe diameter of 6 mm must be adapted and installed on site For the pip2. Differential Pressure and Temperature Regulator with Flow Limiter Type 2479 2430 K Special version DN 15 with differential pressure set point Ap 0 5 bar Fig 1 Type 2479 2430 K Mounting and operating instructions EB 3132 4 EN Edition November 2000 Design and principle of operation 1 Design and principle of operation The regulator consists of a control valve with restriction seat and plug a closing actuator with operating diaphragm and a thermostat with set point adjuster capillary tube and temperature sensor The regulator is designed to maintain the differential pres sure and the temperature at the adjusted set point The flow limiter can be adjusted by turning the adjusting screw 8 3 located in the valve body The valve closes when the controlled value increases The process medium flows through the valve in the direction indicated by the arrow The free area between the adjustable restriction baffle plate 8 5 and the plug 3 determi nes the flow rate The high pressure of the plant flow line is transmitted to the lower diaphragm chamber of the actuator via the A control line 7 provided by the customer The low pressure downstream of the restric tion is applied to the low pressure side of the operating diaphragm 6 1 through a bore in the plug The differential pressure created by the restriction baffle plate is converted into a positioning force acting on the operating diaphr
3. agm This force is used to move the plug according to the force of the positio ning spring 5 In the sensor the temperature of the medi um produces a pressure which is transmit ted to the operating bellows 23 via the ca pillary tube 24 and converted into a posi tioning force This force is used to move the baffle plate 8 5 via the coupling rod 9 ac cording to the force of the spring 21 pre tensioned by the set point adjuster 22 The largest signal is always used to actuate the valve Assembly start up and operation of the device may only be performed by trained personnel familiar with this product According to these mounting and operating instructions trained personnel refers to individuals who are able to judge the work they are assigned to and recognize potential hazards due to their specialized training their knowledge and experience as well as their knowledge of the applicable standards Any hazards which could be caused at the regulator by the process medium or the operating pressure must be prevented by means of appropriate measures Moreover it must be ensured that the control valve is only used in applications where operating pressure and temperatures do not exceed the operating values which are based on the valve sizing data submitted with the order Proper shipping and appropriate storage are assumed 2 B 3132 4 EN Design and principle of operation zz a I WS fl LT Id 47 Fig
4. e sensor of the Type 2430 K Thermostat may be mounted in any desired position It must be entirely immersed in the controlled medium The sensor should be in stalled in a location where overheating or considerable idle times cannot occur A welding socket with a G 1 2 or G 3 4 fe male thread connection should be welded to the position where the sensor is to be in stalled Seal the screw gland or thermowell into the welding socket Insert the sensor and fasten it with the clamping screw Installation CAUTION To prevent damage caused by corro sion it is important to make sure on installing the sensor or thermowell that only the same kind of materials are used together For instance do not use a sensor or thermowell made of non ferrous metal in a stain less steel heat exchanger In this case the sensor should be used to gether with a stainless steel thermo well 2 5 1 Capillary tube The capillary tube should be routed such that it cannot be damaged The smallest bending radius must be minimum 50 mm Any excess tube should be neatly coiled up The tube may not under any circumstances be bent or shortened The ambient tempera ture around the tube should fluctuate as little as possible 2 6 Assembling the valve and the thermostat Attach the thermostat to the mounting part of the valve and screw it down by means of a connection nut 10 tightening torque 20 Nm EB 3132 4EN 5 Operation adjusting th
5. e set point 3 Operation adjusting the set point 3 1 Adjusting the flow rate set point All consumers in the system must be open minimum system resistance Bypass lines if applicable must be closed To adjust or change the set point of the flow limiter proceed as follows First set the temperature to the maxi mum value using the set point adjuster Note This value must always exceed the actual system value so that the thermostat does not affect the baffle plate stem Then adjust the flow rate by turning the lateral adjusting screw 8 3 by means of an Allen key width across flats 4 Turn the screw counterclockwise to open the baffle plate and to increase the flow rate Turn the screw clockwise to close the baffle plate and to reduce the flow rate Note The baffle plate is closed when delivered Adjust the flow rate using a reference de vice e g a calorimetric meter and lead seal it if required 6 B 3132 4 EN 3 1 Adjusting the temperature set point Adjust the temperature set point using the black plastic set point adjuster 22 while watching the reference thermometer The adjustment is continuously variable Turn the adjuster clockwise to reduce the temperature and turn it counterclockwise to increase the temperature The temperature can be fixed at an adjust ed value by lead sealing the bore in the set point adjuster 19 mm hexagon bit 17 Fig 4 Socket wrench 4 Troubleshoot
6. gm 1 Unscrew the thermostat and the control line 7 2 Loosen the screws 6 2 and remove the lower diaphragm case with the di aphragm and diaphragm plates 3 Replace the complete diaphragm section including the diaphragm plates 4 To reassemble the regulator proceed in reverse order 4 3 Replacing the baffle plate 1 Unscrew the coupling nut in order to re move the thermostat from the mounting part of the valve CAUTION Unscrew the adjusting screw 8 3 before proceeding 2 Unscrew the mounting part 8 includ ing the baffle plate by means of a sok ket wrench see Fig 4 Order No 1280 3001 and pull it out of the valve body 3 Replace the parts To reassemble the re gulator proceed in reverse order Ap ply the tightening torques according to Fig 2 EB 3132 4EN 7 Dimensions in mm 5 Dimensions in mm 6 Customer inquiries Should you have any inquiries about the regu lator please submit the following details Type and nominal size Model Number see nameplate Upstream and downstream pressures of the valve Flow rate in m3 h Has a strainer been installed Installation drawing 8 EB 3132 4 EN EB 3132 4EN 9 SAMSON AG MESS UND REGELTECHNIK Weism llerstra e 3 D 60314 Frankfurt am Main Phone 0 69 4 00 90 Telefax 0 69 A 00 95 07 Internet hitp www samson de EB 3132 4 EN S C 2001 01
7. ing If the valve does not close tightly the cause may be a contaminated seat or plug or val ve seat and plug no longer give tight shut off because of wear and tear If the flow rate deviates considerably from the adju sted set point e g rapidly increasing flow rate inspect the operating diaphragm for le aks and replace it if necessary CAUTION Always relieve the pressure from the part of the plant to be worked on and drain it prior to performing any assembly work on the regulator Re move the regulator from the pi peline to perform any assembly work 4 1 Cleaning or replacing the plug 1 Unscrew the thermostat and the control line and remove the regulator from the pipeline 2 Loosen the screws 6 2 and remove the lower diaphragm case with the di aphragm 6 1 and the diaphragm plates 3 Unscrew and remove the guide nipple of the plug section 3 using a socket wrench Order No 1280 3001 This wrench can be made for instance from a GEDORE screwdriver bit IN 19 19 by boring a 17 mm hole with a dia meter of 17 mm into the 19 mm hexa gon bit as shown in Fig 4 4 Clean the seat and plug thoroughly Operation adjusting the set point Should the plug be damaged replace the complete plug section 5 Check the control line for any blockages 6 To reassemble the regulator proceed in reverse order Apply the tightening torques according to Fig 2 4 2 Replacing the diaphra
8. ing arrangement refer to the installation schematics Fig 3 2 3 Strainer Since sealing particles globules and other impurities carried along by the process medium could impair the proper functioning of the valve especially tight shut off a strai ner SAMSON Type 1NI should be instal led upstream of the regulator The strainer must be installed so that the medium flows through it in the direction in dicated by the arrow on the strainer body The filter insert must be vertically suspen ded Make sure that ample space is availa ble to remove the filter Fig 3 Installation schematics 4 B 3132 4 EN 1 Shut off valve 2 Strainer 3 Regulator A Pressure gauge 2 4 Additional installation instructions We recommend that you install one hand operated shut off valve upstream of the strai ner and one downstream of the regulator This allows the plant to be shut down for cleaning the strainer or maintaining the re gulator To monitor the pressures prevailing in the plant install one pressure gauge upstream and one downstream of the regulator To monitor the adjusted temperature set point a thermo meter must be installed and immersed in the controlled medium near the sensor 2 5 Installing the temperature sensor For further details on the Type 2430 K Thermostat refer to the Mounting and operating instructions EB 2430 EN For the Type 2430 vapor pressure refer to EB 2430 3 EN The temperatur
Download Pdf Manuals
Related Search