Related Manuals for GESTRA NRG 29
Summary of Contents for GESTRA NRG 29
- Page 1 Level Electrode NRG 29 Installation & Operating Manual 851115-00 E n g l i s h...
-
Page 2: Table Of Contents
Key .................................7 NRG 29 ..............................8 Tools ...............................8 Installation examples ..........................9 Key .................................9 Electrical connection Tools ..............................10 NRV 2-30 ..............................11 Wiring diagram ............................11 NRV 2-30, wiring the terminal strips ......................12 Key ...............................12 NRG 29 - Installation & Operating Manual - 851115-00... - Page 3 Replacing the electronic circuit board ....................14 Maintenance Safety note ............................14 Checking the ceramic insulator ......................14 Removing and disposing of the NRG 29 level electrode ..............15 Declaration of Conformity; Standards and Directives ...............15 NRG 29 - Installation & Operating Manual - 851115-00...
-
Page 4: Intended Use
Intended use The NRG 29 level electrode is used to measure the water level in condensate lines. In combination with the NRS 2-4 level switch, the electrode is used as a limit switch with MAX alarm for draining turbines, for example. -
Page 5: Technical Data
Special flange Identical design to NRG 29 PN 160/DN 50 MRV 19 NRG 29 N PN 160/DN 50 with tongue and groove MRV 19 N NRG 29 L PN 160/DN 50 MRV 19 L Material of electrode and adapter flange 1.5415... -
Page 6: Product Package
4 Nominal pressure rating 5 Connection thread 6 Material of screw-in thread 7 IP rating 8 Maximum pressure and temperature ratings 9 Mark of conformity 0 Disposal information a Material number-serial number b Manufacturer NRG 29 - Installation & Operating Manual - 851115-00... -
Page 7: Installation
Dimensions of the NRG 29 Fig. 2 44.5 Transport lock Groove for gasket Strainer Expansion pin Locking screw Stuffing box Protective tube Terminal box with electronic circuit Flange Measurement board electrode NRG 29 - Installation & Operating Manual - 851115-00... -
Page 8: Nrg 29
3. Insert the level electrode in such a way that the connector on the terminal box is facing down. 4. Tightening torques: NRG 29 and NRG 29 N: Tighten the expansion pins crosswise evenly to 100 Nm, then evenly to 250 Nm. Tighten to 250 Nm once again after roughly one day of use. -
Page 9: Installation Examples
∅ Groove outside ∅ Y3 Groove depth Tongue inside ∅ Tongue outside ∅ X3 Tongue height Gasket 1.7335/graphite 1.5415/graphite 1.7335/graphite Fig. 3 Coupling provided on site Adapter flange Electrode flange NRG 29 - Installation & Operating Manual - 851115-00... -
Page 10: Electrical Connection
Please refer to the Installation & Operating Manuals of the NRS 2-4 level switch. ■ Route the connecting cable to the level electrode separately from power ■ lines. Tools 6 mm screwdriver, fully insulated to EN IEC 60900 ■ NRG 29 - Installation & Operating Manual - 851115-00... -
Page 11: Nrv 2-30
Electrical connection continued NRV 2-30 Fig. 4 Wiring diagram NRG 29 NRG 29 NRV 2-30 NRV 2-30 P3 P2 P1 Fig. 5 NRG 29 - Installation & Operating Manual - 851115-00... -
Page 12: Nrv 2-30, Wiring The Terminal Strips
Bringing into service Note The NRG 29 level electrode and NRS 2-4 (MAX) level switch make up one functional unit and can therefore only be operated and checked together. You can find information on bringing into service, faults and how these can be remedied in the Installation &... -
Page 13: Troubleshooting
On the NRS 2-4, measure the voltage at C18/A18. Cable mal- Faulty connecting cable to the level elec- On the NRG 29, measure the voltage at terminals 2 function LED trode (short circuit, open circuit). and 3. If the voltage is ≤ 1 V, check the connecting lights up cable/electrical connection. -
Page 14: Replacing The Electronic Circuit Board
If you do not see any cracks, reinsert the strainer 8 and secure it with the snap ring. Reinstall the electrode. Pay attention to the notes in the “Installation” section on page 9. NRG 29 - Installation & Operating Manual - 851115-00... -
Page 15: Removing And Disposing Of The Level Electrode
You can find details on the conformity of the equipment and the relevant standards and directives, where applicable, in the Declaration of Conformity and associated certificates or approvals. The valid Declaration of Conformity is available to download at www.gestra.com. You can request the associated certificates and approvals by writing to the following address: GESTRA AG Münchener Straße 77... - Page 16 You can find our authorised agents around the world at: www.gestra.com GESTRA AG Münchener Straße 77 28215 Bremen Germany Tel. +49 421 3503-0 +49 421 3503-393 e-mail info@de.gestra.com Website www.gestra.com 851115-00/01-2025cm (809231-00) · GESTRA AG · Bremen · Printed in Germany...
Need help?
Do you have a question about the NRG 29 and is the answer not in the manual?
Questions and answers