Grundfos NB Instructions Manual
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Grundfos NB Instructions Manual

Grundfos NB Instructions Manual

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GRUNDFOS INSTRUCTIONS
NB
Installation and operating instructions
NB
Installation and operating instructions
(all available languages)
http://net.grundfos.com/qr/i/93048247

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Summary of Contents for Grundfos NB

  • Page 1 GRUNDFOS INSTRUCTIONS Installation and operating instructions Installation and operating instructions (all available languages) http://net.grundfos.com/qr/i/93048247...
  • Page 3 English (US) Installation and operating instructions ............4 Limited consumer warranty .

  • Page 4: Table Of Contents

    Foundation of NB pump without base frame ..15 Foundation of NB pump with base frame ... 16 Preparing the foundation ..... 17 Levelling the product .

  • Page 5: General Information

    1.1 Hazard statements 2.2 Pumped liquids The symbols and hazard statements below may appear in Grundfos Pumped liquids must be clean, thin, non-explosive and without installation and operating instructions, safety instructions and particles or fibers.
  • Page 6 2.3.2 Type key, NB Example 1: NB 025-095/08.43AAEG6S3ESBQQETX2 Example 2: NB 040-150/16.77AFEG7TBESDQQE1X4 Example 3: NB 060-135/12.91-12.76AAEG7TBESDQQEWX4 Pos. Example 1 -095 /08.43 BQQE Example 2 -150 /16.77 DQQE Example 3 -135 /12.91-12.76 DQQE Pos. Explanation Type range Nominal diameter of outlet port (DN)
  • Page 7 Code for speed variant [rpm]. See Codes for speed variant. Example 1: NB 025-095/08.43AA2G6S3ESBQQETX2 shows an Example 2: NB 060-135/12.91-12.76AAEG7TAESDQQEWX4 NB 025-095 pump with these characteristics: shows an NB 060-135 pump with these characteristics: • 08.43 inch closed impeller, cylindrical trim •...
  • Page 8 2.3.2.1 Letter codes for shaft seals 2.3.2.2 Codes for rated motor power Pos. 14 in NB type key example. Pos. 15 in NB type key example. Code Description Explanation Description Code A: O-ring seal with fixed driver [hp] [kW] B: Rubber bellows seal 0.16...
  • Page 9 2.3.2.3 Codes for phase and voltage or other information Pos. 16 in NB type key example. Code Description E-motor (ECM ), 1 x 200-240 V E-motor (ECM ), 3 x 200-240 V E-motor (ECM ), 3 x 440-480 V E-motor (ECM...

  • Page 10: Receiving The Product

    3. Receiving the product 4. Installing the product 3.1 Performance test 4.1 Mounting of motor on bare shaft pumps The pumps are not tested for performance before leaving the 4.1.1 Mounting of motor on pump housing without feet factory unless it was specifically ordered. The pumps are supplied with a transport bracket protecting the shaft seal during transport.
  • Page 11 4. Remove the nut, washer and transport bracket. 8. Fit the coupling guard. Tighten the screws to the correct torque. • M5 x 10 mm: 6 ± 2 Nm 5. Press down the threaded pipe to ensure that the shaft is in bottom position.
  • Page 12 3. Fit and tighten the motor screws to the correct torque. See below. • M8: 20 ± 4 Nm • M10: 40 ± 8 Nm • M12: 70 ± 15 Nm • M16: 145 ± 30 Nm • M20: 150 ± 30 Nm •...

  • Page 13: Location

    4.2.1 Vertical installation, NB lifting equipment. • NB pumps with base frame must have the same clearance as For inspection and repair, allow suitable clearances for pumps with motors from 7.5 to 268 hp (5.5 to 200 kW). pump or motor removal.

  • Page 14: Mechanical Installation

    5. Mechanical installation The pump must be installed according to national water regulations and standards. 5.1 Lifting the product Motors from 5 hp (4 kW) and up are supplied with lifting eyes which must not be used for lifting the entire pump unit.

  • Page 15: Installation Positions

    5.2 Installation positions 5.3 Foundation of NB pump without base frame Arrows on the pump housing show the direction of liquid flow Non-compliance may result in functional faults which will through the pump. damage the pump components. The pumps can be installed with the motor and pump shaft in all...

  • Page 16: Foundation Of Nb Pump With Base Frame

    5.4 Foundation of NB pump with base frame After installation is finished, tighten the screws connecting the flange, feet and the anchor bolts according to the tightening torques. You must apply an anti-loose method, Non-compliance may result in functional faults which will such as mounting lock washers.

  • Page 17: Preparing The Foundation

    • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •...

  • Page 18: Grouting

    If you have questions or doubts about the grouting, please contact an expert on grouting. Apply grout if needed. NB pumps do not require grouting to maintain shaft alignment, but grouting will increase pump stability within the pipe system. Grouting compensates for an uneven foundation, distributes the weight of the unit, dampens vibrations and prevents shifting.

  • Page 19: Pipes

    5.8 Pipes 5.8.2 Direct mounting in pipes 5.8.1 Pipe installation To ensure quiet operation, suspend the pipes from When installing the pipes, the pump housing must not be stressed suitable pipe hangers. by the pipes. The inlet and outlet pipes must be of an adequate size, taking the Pumps fitted with motors up to and including frame size 132 are pump inlet pressure into account.

  • Page 20: Vibration Damping

    5.9 Vibration damping on the outlet side. At flow velocities greater than 16.4 ft/s (5 m/s), we recommend that you fit larger expansion joints matching the 5.9.1 Elimination of noise and vibrations pipes. In order to achieve optimum operation and minimum noise and The figures below show examples of rubber bellows expansion vibration, consider vibration damping of the pump.

  • Page 21: Measuring Instruments

    Pumps fitted with synchronous motors must be connected to a 5.11.1 Pressure gauge and mano-vacuum gauge Grundfos CUE frequency converter. To ensure continuous monitoring of the operation, we recommend that you install a pressure gauge on the outlet side and a mano- vacuum gauge on the inlet side.

  • Page 22: Frequency Converter Operation

    100 hp (75 ring and the bearings must be electrically components. kW) and above isolated. Contact Grundfos. ‐ In hot-liquid installations, pay special attention to An output filter must be fitted between the the risk of personal injury caused by scalding hot Noise-critical motor and the frequency converter.

  • Page 23: Checking The Direction Of Rotation

    7.2.3 Priming the product in open systems where the liquid 7.4 Starting up the pump level is below the pump inlet 1. Fully open the isolating valve on the inlet side of the pump and 1. If an isolating valve is fitted on the inlet side of the pump, the leave the isolating valve on the outlet side almost closed.

  • Page 24: Shaft Seal Run-In Period

    8.3 Service kits Otherwise, Grundfos can refuse to accept the product for service. Service kits for the products, see Grundfos Product Center in The product must be cleaned thoroughly before you return it.

  • Page 25: Taking The Product Out Of Operation

    9. Taking the product out of operation 9.2 Short-term shutdown For overnight or temporary shutdown periods under nonfreezing 9.1 Protecting the pump during periods of inactivity and conditions, the pump may remain filled with liquid. The pump must frost be fully primed before restarting. For short or frequent shutdown periods under freezing conditions, Pumps that are not being used during periods of frost must be the liquid must be kept moving within the pump housing and the...

  • Page 26: Fault Finding

    10. Fault finding CAUTION Cold surfaceor Hot surface DANGER Minor or moderate personal injury Electric shock ‐ When pumping hot or cold liquids, make sure that no Death or serious personal injury one can accidentally come into contact with hot or cold ‐...
  • Page 27 Fault Cause Remedy • Increase the liquid level on the inlet side. a) The inlet pressure is too low, resulting in • Open the isolating valve in the inlet pipe. cavitation in the pump. • Make sure that all the conditions in section Pipes are complied with.

  • Page 28: Technical Data

    11.1.3 Maximum operating pressure curve for a specific pump when selecting it in the Grundfos Product Center. See www.grundfos.com. Do not exceed the maximum operating pressure stated on the pump nameplate.

  • Page 29: Electrical Data

    This product or parts of it must be disposed of in an environmentally sound way. 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. The crossed-out wheelie bin symbol on...
  • Page 30 For New Jersey there is no prohibition on returning a defective product at a purchaser’s cost. If Grundfos is required by applicable State law to pay for the cost of shipment under applicable State law, then a purchaser should contact a Grundfos Authorized Service Partner to arrange for shipment.
  • Page 31 Para el caso de productos que no sean de consumo, consulte los términos de la garantía de Grundfos definidos en la cláusula 10 de los términos y condiciones de venta de productos y servicios de Grundfos para los EE. UU., disponibles en https://www.grundfos.com/legal/grundfos-customer-terms/usa-grundfos-general-terms-for-sales-of-products-and-services.
  • Page 32 (excluding the application of any Grundfos original spare parts); • accidental or intentional damage or misuse of the Products or services by the Purchaser or a third party (not acting on Grundfos’ behalf); or •...
  • Page 33 Produit (« Période de garantie »). Lors de l'achat d'un Produit Grundfos en ligne, il est important de vérifier la date de fabrication et la durée de la garantie auprès du vendeur, car le Produit pourrait ne plus être couvert par cette garantie limitée du fabricant.
  • Page 34 2941 Brighton Road Oakville, Ontario L6H 6C9 Tel.: +1-905 829 9533 Fax: +1-905 829 9512 Mexico Bombas GRUNDFOS de México S.A. de C.V. Boulevard TLC No. 15 Parque industrial Stiva Aeropuerto Apodaca, N.L. 66600 Tel.: +52-81-8144 4000 Fax: +52-81-8144 4010...
  • Page 35 93048247 04.2024 ECM: 1391034 www.grundfos.com...

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