Flowserve NRS1-8 Manual de usuario

1NRS 1-8Installation Instructions 818612-00 Level Switch NRS 1-8GESTRA Steam SystemsGESTRA

10Functional ElementsFig. 74123

11A Cover screwsB BaseC CoverD Mounting clipE Cable entry (flexible)F Cable entry (housing)G Hole d = 4.3 mm1 Button “TEST 2 / INSPECTION” for i

12Toolsn Screwdriver (5.5/100)Attentionn To provide sufficient ventilation, ensure a minimum spacing of 20 mm between adjacent units.InstallationNRS

13Fig. 9Fig. 8DBEHFFCAGGInstallation – continued –Examples of installation

14WiringNRS 1-8Cable required for wiring to the electrode: four-core screened cable, e. g. I-Y(St)Y 2 x 2 x 0.8 or LIYCY 4 x 0.5².Max. cable length 1

15Wiring – continued –Wiring diagramFig. 10Fig. 11This wiring diagram is only applicable for France!

16Apply mains voltage to level switch NRS 1-8.CommissioningCheck that the NRS 1-8 and the associated level electrode are wired in accordance with the

17Operational MalfunctionsFault-finding list for troubleshooting malfunctionsElectrode exposed – high-level alarmFault: The level switch indicates a h

18DisposalDecommissioningRemove the level switch and separate the waste materials in accordance with the material specification.Electronic components

19Declaration of Conformity AnnexWe hereby declare that the equipment NRS 1-8 conforms to the following European guidelines:n LV guideline 73/23/eec

2ContentsUsage for the intended purpose ...

20818612-00/106cm · © 2005 GESTRA AG · Bremen · Printed in GermanyGreat BritainFlowserve Flow Control (UK) Ltd.Burrel Road, Haywards HeathWest Sussex

3Checking wiring ...1

4Important NotesDangerThe terminal strip of the NRS 1-8 is live during operation. This presents the danger of electric shock!Cut off power supply bef

5Explanatory Notes – continued –FunctionThe level switch NRS 1-8 is a two-channel unit provided with an automatic self-checking circuitry in accorda

6NRS 1-8Technical DataType approval no. 09 - 91 - 0112Input Four terminals for the connection of one level electrodeNRG 16-12, PN 40NRG 17-12, PN 63NR

7Corrosion resistanceIf the equipment is used for its intended purpose, its safety is not impaired by corrosion.Technical Data – continued –Name pla

8Technical Data – continued –DimensionsFig. 210673251Fig. 311285

9Design NRS 1-8GB CFEDAAFig. 4Fig. 5Fig. 6