GESTRA NRGS 15-1 Installation Instructions Manual Download | Manualshive

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Level switch

NRGS 15-1

Original Installation Instructions

818479-04

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Summary of Contents for NRGS 15-1

Page 1: ...1 E N English Level switch NRGS 15 1 Original Installation Instructions 818479 04 ...

Page 2: ...aration of Conformity Manufacturer s Declaration 6 Technical Data Level switch NRGS 15 1 7 Scope of supply 8 Name plate marking 9 Dimensions 10 Establishing Functions Selecting function 11 Level switch NRGS 15 1 12 Establishing functions 13 Changing the time delay 13 Key 13 Adjusting sensitivity range 14 Installation Tools 15 NRGS 15 1 16 NRGS 15 1 step 1 17 NRGS 15 1 step 2 17 Table Functions 17 ...

Page 3: ...pply voltage 21 Checking switchpoints and functions 21 Checking switchpoints and functions 22 Checking switchpoints and functions 23 Troubleshooting Indication diagnosis and remedy 24 Indication diagnosis and remedy 25 Replacing electronic module 25 Removing and disposing of the level switch Removing and disposing of the level switch 26 Annex Adjust other functions 27 Installation in non metallic ...

Page 4: ...nctions of the switching channels 1 and 4 are fixed the switchting channels 2 and 3 can be ad justed via code switch to suit individual requirements The tips of the electrode are cut to length on site in order to establish the desired switchpoints of the associated switching channels The following functions are possible n Electrode rod 1 exposed switching channel 1 energizes relay 1 low level 1 wi...

Page 5: ...s live during operation This presents the danger of electric shock Always cut off power supply to the equipment before mounting removing or connecting the equipment and the terminal strips Safety note The equipment must only be installed and commissioned by qualified and competent staff Retrofitting and maintenance work must only be performed by qualified staff who through adequate training have a...

Page 6: ... Manufacturer s Declaration For details on the conformity of our equipment with European Directives please refer to our Declaration of Conformity or our Manufacturer s Declaration The current Declaration of Conformity Declaration of Manufacturer are available in the Internet under www gestra de documents or can be requested from us Directives and Standards The equipment complies with the requireme...

Page 7: ...r at 25 C 0 5 1000 μS cm or 10 10000 μS cm switch selectable Electrode voltage 20 Vss Output 4 volt free change over contacts 8 A 250 V AC 30 V DC cos ϕ 1 IEC 61810 Ensure interference suppression by providing contactor with an arc suppressor RC combination Energizing de energizing delay Relay 1 and 2 1s factory set Relay 3 0 30s adjustable via potentiometer Relay 4 3s factory set Indicators and a...

Page 8: ...it can be put into operation 24 hours Storage temperature 20 70 C defrosting time of the de energized equipment before it can be put into operation 24 hours Relative humidity max 95 no moisture condensation Weight approx 1 4 kg Approvals UL cUL CSA approval UL 508 and CSA C22 2 No 14 13 Standards for Industrial Control Equipment File E243189 Scope of supply NRGS 15 1 1 Level electrode with four ti...

Page 9: ... Phone 49 0 421 3503 0 gestra ag flowserve com Tamb 70 C 158 F IP65 PN 25 G1 1 4571 25 bar 363psi 224 C 435 F Mat Nr XXXXXX Niveauschalter Level switch Commutateur de niveau Before removing cover isolate from power supplies See installation instructions Avant d ouvrir le couvercle dèconnecter complètement l appareil Voir instructions de montage Vor Öffnen des Deckels Gerät freischalten Betriebsanl...

Page 10: ...10 4 3 A Technical Data Dimensions 180 357 1000 Fig 2 b 60 G 1A ISO 228 130 42 continued ...

Page 11: ... alarm 1 burner off Electrode rod 2 Feed pump on fill control Electrode rod 3 Feedwater pump off tv 0 s Electrode rod 4 High water Function 4 Electrode rod 1 Low level alarm 1 burner off with test and reset button Electrode rod 2 Feed pump on fill control Electrode rod 3 Feedwater pump off tv 0 s Electrode rod 4 High water Function 5 Electrode rod 1 Low level alarm 1 Electrode rod 2 Pump off Elect...

Page 12: ...12 F Fig 3 Establishing Functions Level switch NRGS 15 1 Fig 4 7 6 5 8 9 0 1234 15s 0s 5s 25s 30s 20s 10s continued ...

Page 13: ...ctronic module 0 PE connection Fixing nut for terminal box Terminal lugs for electrode wires functional earth RESET button Terminal strip for pushbuttons TEST button Code switch Potentiometer for time delay Cover screws cross recess head screws M4 Housing cover Note To set the functions the time delay and the response sensitivity open the terminal box To do so unscrew the cover screws and remove t...

Page 14: ... switch to change the response sensitivity To change the setting of the code switch located on the electronic module see Fig 4 use a screwdriver with a thin blade The following sensitivity ranges are possible Code switch Toggle switch white Sensitivity of response Response sensitivity 0 5 μS cm at 25 C Response sensitivity 10 μS cm at 25 C Factory setting ON 1 2 3 5 4 6 7 8 910 ON 1 2 3 5 4 6 7 8 ...

Page 15: ...d Do not lag electrode body above the hexagonal section Do not lag the electrode body above the hexagonal part Note that the max thermal insulation of the boiler is 40 mm see Fig 5 Do not insulate electrode thread with hemp or PTFE tape Do not apply conductive paste or grease to the electrode thread Make sure that the air distance between the electrode tips and earth flange vessel wall is not less...

Page 16: ...16 4 3 2 1 A B Installation Fig 5 NRGS 15 1 Ra 3 2 0 5 40 b d c 50 50 65 70 G 1A ISO 228 Ra 12 5 Fig 6 a 40 continued ...

Page 17: ...de of thermal insulation of steam boiler b Screwed G 1A ISO 228 c Joint ring 33 x 39 form D DIN 7603 1 4301 bright annealed d Seating surface Key Table Functions 6 Check the sealing surfaces Fig 6 7 Place supplied joint ring m onto seating surface of the threaded standpipe or flange Fig 6 8 Apply a light smear of heat resistant silicone grease e g WINIX 2150 to electrode thread l 9 Screw the level...

Page 18: ...ssible j Electrode distance 14 mm air gap and creepage distance u High water HW v Electrode rods Key Installation Fig 7 Fig 8 20 DN 50 e f v w x y 20 90 1 i u 10 2 20 DN 50 e f v w x y 20 90 1 s 10 q r j u j 20 20 w Protection tube DN 80 x Low water LW y Reducer DIN 2616 2 K 88 9 x 3 2 42 4 x 2 6 W Cover screws cross recess head screws M4 Housing cover 6 Terminal strip for control lines 7 Cable gl...

Page 19: ...pprox 40 mm of cable insulation coating and remove approx 5 mm of conductor end insulation 4 Loosen cable glands 7 and run the mains cable through the lower cable gland and the control cable through the upper cable gland 5 Connect the mains and control cables according to the wiring diagram Fig 11 inside of housing lid to the terminal strips 6 and 8 6 Plug the terminal strips 6 and 8 onto the elec...

Page 20: ...pletely insulated according to VDE 0680 Electrical connection Wiring diagram Fig 9 4 2 1 5 6 7 8 9 10 11 13 2 3 4 1 4 3 2 1 TEST RESET 4 3 2 1 14 15 12 N L 4 Mains supply Electrode wires PE connection S2 F1 S2 Disconnector F1 Fuse for level switch continued ...

Page 21: ...ity of the equipment EN 61010 1 n Mark the disconnector as isolating device for the conductivity switch Electrical connection Commissioning procedure 1 Apply mains voltage The green LED 5 for Power ON lights up The LEDs 1 2 3 4 Fig 4 are lit as a function of the water level 1 To check the switchpoints and their correct functioning fill or empty the tank accordingly See table Checking switchpoints ...

Page 22: ...old down button RESET for 3 sec LED 1 not illuminated After 1 sec MIN output contact 4 5 open 4 6 closed Lower water level until it is below MIN level Electrode rod 1 emerges LED 1 illuminated red After 1 sec MIN output contact 4 5 closed 4 6 open and disconnection interlocked Fill vessel until MIN level is exceeded Electrode rod 1 enters the liquid Hold down button RESET for 3 sec LED 1 not illum...

Page 23: ...control fill control electrode rod 2 and 3 Set potentiometer for time delay to 0 sec Lower water level until it is below the switchpoint Pump ON Electrode rods 2 and 3 exposed LEDs 2 and 3 are illuminated Pump output contact 10 12 closed 10 11 open Fill vessel until switchpoint Pump ON is exceeded Electrode rod 2 enters the liquid LED 2 not illuminated Fill vessel until switchpoint Pump OFF is exc...

Page 24: ...ty of the boiler water too low Change response sensitivity to 0 5 μS cm Upper vent hole flooded Check installation of level switch Make sure that the level in the protection tube corresponds to the actual water level Switchpoint MIN low water level Status and indication Error Remedy Water level below MIN switchpoint LED 1 not illuminated Electrode rod is too long Cut electrode rod to the length di...

Page 25: ...her with metal joint ring in place Do not insulate the electrode with hemp or PTFE tape Electronic module defective Replace electronic module Replacing electronic module Before exchanging the electronic module take the level switch out of service and cut off its voltage supply 1 Undo the cover screws and remove the housing lid Fig 3 4 2 Pull the electrode wires off the terminal lugs on the electro...

Page 26: ...nger When loosening the level electrode steam or hot water might escape This presents the danger of severe scalds to the whole body Do NOT remove the level switch unless the boiler pressure is verified to be 0 bar The level switch becomes hot during operation Risk of severe burns to hands and arms Before carrying out installation and maintenance work make sure that the equipment is cold The termin...

Page 27: ...e electrode rod 4can be used as refer ence electrode For this purpose plug the connection of the electrode rod 4into the free terminal lug for the functional earth In addition cut the electrode rod 4to the same length as electrode rod 1and strip off the whole insulation ON 1 2 3 5 4 6 7 8 910 ON 1 2 3 5 4 6 7 8 910 ON 1 2 3 5 4 6 7 8 910 ON 1 2 3 5 4 6 7 8 910 ON 1 2 3 5 4 6 7 8 910 ON 1 2 3 5 4 6...

Page 28: ...588 06 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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