GESTRA NRG 211-1 Original Installation Instructions Download | Manualshive

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8

Installation

Dimensions NRG 211-1

~118

~80

334.5

478

97

∅

43.5

Fig. 2

7

8

6

0

9

5

3

1

2

Key

1

Transit protection

2

Fixing screw

3

Flange

7

Strainer

8

Protection tube

9

Temperature sensor

4

Groove for gasket

5

Stuffing box

6

Measuring electrode

4

0

Expansion bolt

a

Terminal box

in electronic

module

a

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7
8
9
10
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Summary of Contents for NRG 211-1

Page 1: ...1 E N English Level Electrode NRG 211 1 Original Installation Instructions 810425 05 ...

Page 2: ...ic Compatibility 5 ATEX Atmosphère Explosible 5 Note on the Declaration of Conformity Manufacturer s Declaration 5 Technical data NRG 211 1 6 Scope of supply 7 Name plate marking 7 Installation Dimensions NRG 211 1 8 Key 8 Welding standpipe 9 NRG 211 1 9 Tools 9 Examples of installation 10 Key 10 Electrical connection Tools 11 NRV 2 30 12 Wiring diagram 12 NRV 2 30 wiring connecting terminals 13 ...

Page 3: ... 13 Troubleshooting Indication diagnosis and remedy 14 Checking voltage 14 Checking temperature sensor 15 Resistance values 16 Replacing electronic module 16 Maintenance Safety note 17 Checking ceramic insulator 17 Removing and disposing of the level electrode Removing and disposing of level electrode NRG 211 17 ...

Page 4: ...gh level alarm This equipment combination can be used as part of a controlled draining system in power plants The electrode with welding standpipe is installed in vertical pipes Safety note Danger When loosening the electrode steam or hot water might escape This presents the risk of severe scalding all over the body It is therefore essential not to dismantle the electrode unless the boiler pressur...

Page 5: ...ion of Manufacturer The current Declaration of Conformity Declaration of Manufacturer are available in the Internet under www gestra com documents or can be requested from us PED Pressure Equipment Directive The equipment fulfils the requirements of the Pressure Equipment Directive 2014 68 EU and can be used for fluids of group 2 The equipment has the CE marking on the name plate LV Low Voltage Di...

Page 6: ...s DN 100 with lateral bore Material of wetted parts Protection tube up to 500 C 1 0305 Protection tube up to 550 C 1 7380 Strainer 1 4571 Insulating seal of electrode Special ceramic Flange seal 1 4541 silver ph value Max admissible 10 Temperature sensor Pt 1000 Weight Level electrode approx 5 6 kg Welding standpipe approx 4 5 kg Electronic module NRV 2 30 Supply voltage 12 V DC Output 0 10 V DC E...

Page 7: ...n Safety note Disposal note CE Marking Manufacturer Pressure rating flanged connec tion material number protection Fig 1 Material number 320 bar 120 C 200 bar 450 C T amb 70 C 158 F Mat Nr Pmax Tmax PN 320 DN50 1 5415 IP 54 GESTRA AG D 28215 Bremen Betriebsanleitung beachten See installation instructions Voir instructions de montage Application range continued ...

Page 8: ... 478 97 43 5 Fig 2 7 8 6 0 9 5 3 1 2 Key 1 Transit protection 2 Fixing screw 3 Flange 7 Strainer 8 Protection tube 9 Temperature sensor 4 Groove for gasket 5 Stuffing box 6 Measuring electrode 4 0 Expansion bolt a Terminal box in electronic module a ...

Page 9: ...d rings at both ends which must not be removed NRG 211 1 1 Check seating surfaces Clean end flange facings 2 Insert joint ring into the groove of the welding standpipe 3 When putting the level electrode in place make sure that the connector at the terminal box points downwards 4 Tighten expansion bolt 0 in diagonally opposite pairs with a torque of 70 Nm 5 Tighten expansion bolt 0 in diagonally op...

Page 10: ...10 Installation Examples of installation b Provided by customer c Welding standpipe GESTRA d Marking TOP Key d DN 100 4 12 63 5 24 63 5 DN 100 4 b b d c c Fig 3 continued 5 10 5 10 ...

Page 11: ...n to the NRS 2 4 Wire terminal strip in accordance with the wiring diagram Fig 5 The screen must not make any other electrical contact n Please follow the instructions given in the installation manual for NRS 2 4 n Make sure that connecting cables leading to the level electrode are segregated and run separately from power cables Attention Tools n Screwdriver size 6 mm completely insulated accordin...

Page 12: ...12 Electrical connection NRV 2 30 e f Wiring diagram 3 6 2 5 1 4 UM CM 3 2 1 4 5 6 Pt 1000 NRG 211 NRV 2 30 g h i j k l l m n n o p q Fig 4 Fig 5 continued ...

Page 13: ... the connector j Screw Key k Contact block l Supply voltage 12 V DC m Measuring voltage 1 10 V DC n Fixing screws for electronic module o Terminal lugs p Connection for temperature sensor Commissioning procedure Note The level electrode NRG 211 1 and the level switch NRS 2 4 MAX form a functional unit and must only be operated and checked together For additional information on commissioning proced...

Page 14: ...3 If the voltage 1 V check the connecting cables and the wiring Attention Before carrying out the fault diagnosis please check Supply voltage Is the level electrode supplied with the voltage specified on the name plate Wiring Is the wiring in accordance with the wiring diagram Danger The terminal strip of the level switch is live during operation This presents the danger of electric shock Always c...

Page 15: ... voltage of the NRG 211 1 across terminals 2 and 3 If you measure a volt age of 1 4V check the temperature sensor If the temperature sensor is defective replace the level electrode Indication diagnosis and remedy Checking temperature sensor 1 Turn up the retaining bracket e and detach the upper part of the connector i from the level electrode Fig 4 2 Unscrew the four cover screws and detach cover ...

Page 16: ...3327 2 3358 6 3389 9 3421 0 3452 1 3 15 700 3452 1 3483 0 3513 8 3544 5 3575 1 3605 5 3635 9 3666 1 3696 2 3726 2 3756 1 3 04 800 3756 1 3815 5 3815 5 3845 0 3874 5 3903 8 2 95 1 Mean values of 100 C range 1 Turn up the retaining bracket e and detach the upper part of the connector i from the level electrode Fig 4 2 Unscrew the four cover screws and detach cover from terminal box 3 Detach all wire...

Page 17: ... electrode 7 for cracks To do so you have to remove the electrode The equipment may only be installed and removed by quali fied personnel Loosen the retaining ring for the strainer 7 Fig 2 and remove the strainer If there are visible signs of cracks in the insulator replace the level electrode with a new one If you cannot detect any cracks put the strainer 7 back in place and secure it by means of...

Page 18: ...18 For your Notes ...

Page 19: ...19 For your Notes ...

Page 20: ...8456 05 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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