GESTRA LRGS 15-1 Installation Instructions Manual Download | Manualshive

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Conductivity Switch

LRGS 15-1

Original Installation Instructions

818758-02

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Summary of Contents for LRGS 15-1

Page 1: ...1 E N English Conductivity Switch LRGS 15 1 Original Installation Instructions 818758 02 ...

Page 2: ...er 4 Important Notes Page Explanatory Notes Scope of supply 5 Function 5 Attention 12 Note 12 Repositioning the terminal box 13 Mounting conductivity switch LRGS 15 1 13 Tools 13 Installation Technical Data LRGS 15 1 6 7 Name plate marking 8 Dimensions 9 Key 11 LRGS 15 1 used as conductivity electrode 14 LRGS 15 1 used for continuous blowdown control 14 15 Key 15 Examples of Installation LRGS 15 1...

Page 3: ...easuring electrode exchanging terminal box Aligning the terminal box 16 Connecting conductivity switch LRGS 15 1 16 Attention 17 Tools 17 Wiring diagram for conductivity switch LRGS 15 1 18 Commissioning Keys and indicators 19 Checking electrical connection 19 Applying mains voltage 19 Factory settings 20 Setting parameters 20 21 Removing and disposing of conductivity switch 25 Note 25 Removing co...

Page 4: ...ting and maintenance work must only be performed by qualified staff who through adequate training have achieved a recognised level of competence Usage for the intended purpose The conductivity switch LRGS 15 1 must only be used for measuring the electrical conductivity in liquids ATEX Atmosphère Explosible According to the European Directive 2014 34 EU the equipment must not be used in potentially...

Page 5: ...ignal when a limit is reached The electrical conductivity being a function of temperature the measured value must be based on a reference temperature of 25 C For calibration purposes a reference measurement at 25 C is therefore required If however a resistance thermometer boiler water temperature is applied the adjustable temperature coefficient can be used to compensate the obtained conductivity ...

Page 6: ...50 to 5000 ppm at 25 C Setpoint Adjustable between 100 and 10000 µS cm or 50 to 5000 ppm MAX limit Adjustable between 100 and 10000 µS cm or 50 to 5000 ppm Switching hysteresis Controller output 10 of the adjusted setpoint MAX limit 3 of the adjusted MAX limit Temperature coefficient Tk if a resistance thermometer Pt 100 is connected 1 6 3 0 per C adjustable in steps of 0 1 Supply voltages 230 V 1...

Page 7: ...ng the continuous blowdown valve 1 Three pole screw type terminal strip for MAX limit The terminal strips can be detached conductor size 1 5 mm2 4 Terminal lugs for connecting the resistance thermometer Protection IP 65 to DIN EN 60529 Protection class 2 protective insulation Weight Approx 1 5 kg Environmental conditions Ambient temperature when system is switched on 0 70 C during operation 10 70 ...

Page 8: ...tement l appareil Voir instructions de montage Vor Öffnen des Deckels Gerät freischalten Betriebsanleitung beachten 250 V T 2 A 230 VAC 50 60 Hz 5 VA Pmax Tmax LRGS 15 1 50 5000 ppm 100 10000 µS cm Leitfähigkeitsschalter Conductivity Switch Commutateur de conductibilité GESTRA AG Münchener Str 77 D 28215 Bremen Phone 49 0 421 3503 0 gestra ag flowserve com Tamb 70 C 158 F IP65 PN 25 G 1 4571 25 ba...

Page 9: ...9 C Technical Data continued Fig 2 B C N Dimensions 40 G ISO 228 1 RA 12 5 RA 3 2 0 5 180 367 40 O D E 129 O A F G ...

Page 10: ...10 Functional Elements Fig 3 LRGS 15 1 5 7 2 1 6 3 4 Fig 4 P8 P9 P10 P11 P7 P6 P5 P4 1 2 J L K K J M N L J I H ...

Page 11: ... segment indicator indication of actual value or setpoint temperature error code 7 Pushbuttons A Gasket B Thermal insulation C Thread D Joint ring 27 x 32 form D DIN 7603 2 4068 bright annealed E Length of installation F Measuring electrode G Measuring surface H Cover screws cross recess head screws M4 I Cover J Fixing nut for terminal box K Terminal lugs for resistance thermometer L Terminal lugs...

Page 12: ... thermal insulation of the boiler The conductivity switch can be mounted vertically or horizontally or with an inclina tion The terminal box can be repositioned to ensure that the cable gland points in the required direction Note that the measuring surface of the measuring electrode Fig 2 must always be in contact with the fluid Make sure that there is a distance of at least 50 mm between the meas...

Page 13: ...de rod making sure that the gasket fits correctly between the electrode rod and the terminal box 4 Pull electrode cables through fixing nut J Use a 19 mm A F spanner to attach the fixing nut J to the fixing screw and tighten with a torque of 25 Nm 5 Connect electrode cables to terminal lugs according to the wiring diagram Fig 8 6 Replace cover I and fasten cover screws H Installation continued Too...

Page 14: ...S 15 1 used as conductivity electrode LRGS 15 1 used for continuous blowdown control Fig 6 LRGS 15 1 LRGS 15 1 P D P Q R T D 250 400 406 to ISO 228 1 R 5 0 250 600 406 to ISO 228 1 R 5 0 197 DN mm A mm 15 182 20 184 25 184 40 189 NW LW NB NB ...

Page 15: ...2 form D DIN 7603 2 4068 bright annealed P Boiler drum Q Shut off valve GAV R Continuous blowdown valve BAE S Measuring pot T T type connector Key Fig 7 LRGS 15 1 used for continuous blowdown control LRGS 15 1 R Q to ISO 228 1 DN 15 40 Outlet Inlet DN 15 40 S D ...

Page 16: ...mains cable through the cable gland on the right hand side and the control lines through the other cable glands 5 Connect the mains and control lines to the terminal strips M according to the wiring diagram inside of cover 6 Attach the terminal strips M to the electronic insert 7 For connecting an external resistance thermometer use a screened two core cable e g Ölflex 110 CH manufactured by LAPP ...

Page 17: ...pressors RC combinations as specified by the manufacturer Provide an external slow blow fuse 63 A at 230 V or 125 mA at 115 V for the coductivity switch For disconnecting the conductivity switch install an easily accessible disconnecting switch in the close proximity of the equipment EN 61010 1 Mark the disconnecting switch as isolating device for the conductivity switch Tools Screwdriver for cros...

Page 18: ...eration L2 must remain live until the actuator has closed the continuous blowdown valve L1 and L2 must be connected to an outer conductor of the same phase If no resistance thermometer is connected the terminal lugs P 6 7 10 and 11 remain unassigned Fig 8 Actuator EF 1 EF 06 Temp feeler Pt 100 μS ppm Alarm Max ϑ F1 F2 S1 Disconnector F1 Fuse for output contact F2 Fuse for conductivity switch S1 Op...

Page 19: ... display shows the actual value LED 3 MAX limit reached LED 4 Continuous blowdown valve opens LED 5 Continuous blowdown valve in operating position Keys and indicators 1 Make sure that the conductivity switch is connected in accordance with the wiring diagram 2 Verify that the available supply voltage corresponds to the voltage that is stated on the name plate Checking electrical connection Apply ...

Page 20: ...Key Display P P 1 Setpoint 1 _SP E P 100 9999 µS cm press key or to change E SAVE return to 1 Setpoint 2 MAX limit 2 _AL E P 100 9999 µS cm press key or to change E SAVE return to 2 MAX limit 3 Correction of measured value 3 _CF E P 0 050 5 000 press key or to change E SAVE return to 3 Correction of measured value 4 PT 100 4 _Pt E P ON OFF press key or to change E SAVE return to 4 PT 100 4 1 TK 4 ...

Page 21: ...e is reached measure the electrical conductivity of a boiler water sample at 25 C n Set parameter 4 PT 100 to ON Adjust the temperature coefficient in parameter 4 1 TK step by step until the indicated actual value agrees with the measured value The default factory setting for the TK is 2 1 C Setting further parameters n Set the switchpoint at which the continuous blowdown valve shall open in the p...

Page 22: ...N position Once the conductivity has decreased by 10 of the setpoint the valve is motored back to the OPERATING position MAX limit exceeded Indication of actual value LED 2 LED 3 and 5 are illuminated Output contact P 3 1 2 is open Continuous blowdown valve is motored to the position OPEN Burner is switched off stand by operation Continuous blowdown valve is motored to the position CLOSED Show flu...

Page 23: ...ay LEDs 1 3 and 5 are illuminated Fault Short circuit in measuring electrode Remedy Check connections of the measuring electrode electronic insert terminal lugs P 4 5 P 8 9 If necessary replace the conductivity switch Error code E 04 LED display LEDs 1 3 and 5 are illuminated Fault Interruption in measuring electrode Remedy Check connections of the measuring electrode electronic insert terminal lu...

Page 24: ...trips M and pull the wires out of the cable glands 3 Remove the electrode wires from the terminal lugs 4 Unscrew the fixing nut J using an open end spanner 19 mm A F Pull electrode wires through the fixing nut J 5 Remove the terminal box and pull the electrode wires through the bore for the fixing screw 6 Remove the gasket A between the electrode and the terminal box Install a new terminal box tak...

Page 25: ...1 Unscrew the cover screws H and remove the cover I Fig 3 4 2 Detach the connecting wires from the terminal strips M and pull the wires out of the cable glands 3 Before removing the conductivity switch make sure that the equipment is neither hot nor under pressure For the disposal of the conductivity switch observe the pertinent legal regulations concerning waste disposal Note When ordering spare ...

Page 26: ...26 For your notes ...

Page 27: ...27 For your notes ...

Page 28: ...8760 02 GESTRA AG Bremen Printed in Germany GESTRA AG Münchener Straße 77 28215 Bremen Germany Telefon 49 421 3503 0 Telefax 49 421 3503 393 E mail info de gestra com Web www gestra de Agencies all over the world www gestra de ...

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