Flowserve NRG 16-11 User Manual Page 1

1NRG 16-11NRG 17-11NRG 19-11Installation Instructions 818578-01Level Electrode NRG 16-11, NRG 17-11, NRG 19-11GESTRA Steam SystemsGESTRA

10Functional ElementsFig. 9QRONKLMP

11A Measuring electrodeB BoreC SpringD Electrode tipE Disk (measuring surface extension)F Star-lock washerG Set screwH Joint ring 27 x 32, form

12Attention The seating surfaces and threads on the vessel and mounting flange must be accurately machined, Fig. 8 Use GESTRA PN 160 hat flange when

13Important notes The installation of two low-level limiters in one standpipe is not allowed according to TRD! For the approval of the boiler stan

14Examples of Installation DN 100Fig. 12∅ 2020≥ DN 2024.5 24.520∅ 20Fig. 10Fig. 13 DN 50¾" BSP¾" BSP¾" BSP≤ 20≤ 3000∅ 20≤ 90°∅ 20¾

151 Flange PN 40, PN 63, PN 160, DN 50, DIN 2501-1 Flange PN 40, PN 63, PN 160, DN 100, DIN 2501-12 For the approval of the boiler standpipe the r

16Wiring – continued –Wiring diagramFig. 14Fig. 15This wiring diagram is only valid for France.

17Apply mains voltage to level switch NRS 1-7.CommissioningCheck whether the NRG 1…-11 and the associated controller NRS 1-7 are wired in accordance w

18Operational MalfunctionsFault-finding list for troubleshootingLevel electrode submerged – low-level alarmFault: Mains voltage is not applied to leve

19DisposalDecommissioningRemove the level electrode and separate the waste materials in accordance with the material specification.Electronic componen

2ContentsUsage for the intended purpose ...

20GESTRA AGP. O. Box 10 54 60, D-28054 Bremen Münchener Str. 77, D-28215 BremenTel. +49 (0) 421 35 03 - 0 Fax +49 (0) 421 35 03 - 393E

3WiringNRG 1...-11 ...

4Important NotesDangerWhen loosening the electrode steam or hot water might escape. This presents the danger of severe scalds to the whole body.It is

5Explanatory Notes – continued –DescriptionThe level electrode NRG 1...-11 detects the min. liquid level (low level alarm) in a steam boiler. The op

6NRG 16-11, NRG 17-11, NRG 19-11Technical DataType approval TÜV· WB·01-354 EG 01 202 931-B-01-0077Service pressure NRG 16-11: 32 bar at 238 °C NRG 1

7Corrosion resistanceProvided that the equipment is used for its intended purpose, its safety is not impaired by corrosion.Technical Data – continue

8Technical Data – continued –DimensionsFig. 4NRG 17-11, NRG 19-11 withoutmeasuring surface extension≤ 150085272Fig. 3NRG 16-11 withmeasuring surface

9Fig. 7 Fig. 8N 8N 100.5Fig. 5 ¾" BSP, ISO 228-1∅ 33Design NRG 1...-11AGFBCDEFig. 6IHJS