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Grundfos NK Installation And Operating Instructions Manual
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Grundfos NK Installation And Operating Instructions Manual

Grundfos NK Installation And Operating Instructions Manual

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GRUNDFOS INSTRUCTIONS
NK
Installation and operating instructions
QR Code NK
Installation and operating instructions
(all available languages)
http://net.grundfos.com/qr/i/93048245

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Summary of Contents for Grundfos NK

  • Page 1 GRUNDFOS INSTRUCTIONS Installation and operating instructions QR Code NK Installation and operating instructions (all available languages) http://net.grundfos.com/qr/i/93048245...
  • Page 3 English (US) Installation and operating instructions ............4...

  • Page 4: Table Of Contents

    English (US) Installation and operating instructions Original installation and operating instructions 12.3 Operation with combustion engine ....37 Table of contents Disposing of the product ....37 Limited warranty .

  • Page 5: Limited Warranty

    Grundfos' Indicates a hazardous situation which, if not avoided, will warranty. Grundfos will not be liable for damage or wear to products result in death or serious personal injury. caused by abnormal operating conditions, accident, abuse, misuse,...

  • Page 6: Product Introduction

    H 101.5 ft p/t 175/248 Model NK 060-110/10.75AAG6S2ESBQQETW4 PN-SN 99931992-10000546 PC P9-2048 Assembled In Brookshire, TX Imp.Dia 10.75 (in.) Example of NK nameplate Pos. Description Type designation Product number and production serial number Flow Head Production code Pressure and temperature...
  • Page 7 3.2.2 Type key, NK Example 1: NK 025-095/08.43AA2G6S3ESBQQETX2 Example 2: NK 040-150/16.77AY1G7TBESDQQE1X4 Example 3: NK 060-135/1291-1276AAEG7TBESDQQEWX4 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 8 Pos. Explanation Code for materials Code Pump housing Impeller Wear ring Shaft A48 Class 35 No wear ring 1.0503+304 sleeve A48 Class 35 No wear ring A48 Class 35 No wear ring SAF 2205 A48 Class 35 No wear ring A48 Class 35 No wear ring SAF 2205...

  • Page 9: Code Description

    60 HP motor, US DOE regulated motor, 2-pole, 60 Hz. ® V: FKM (Viton Example 2: NK 060-135/12.91-12.76AAEG7TBESDQQEWX4 Material of ® shows an NK 060-135 pump with these characteristics: secondary seal and F: FXM (Fluoraz other rubber and ® •...
  • Page 10 3.2.2.2 Codes for rated motor power 3.2.2.3 Codes for phase and voltage or other information Pos. 15 in NK type key example. Pos. 16 in NK type key example. Description Code Description Code [hp] [kW] E-motor (ECM ), 1 x 200-240 V 0.16...

  • Page 11: Receiving The Product

    Test certificates are must not be used for lifting the entire pump unit. available from Grundfos. After the installation, the alignment of pump and motor must be checked again. See section Alignment of •...

  • Page 12: Installation Requirements

    Arrows on the pump housing show the direction of the flow of liquid 5.1 Location through the pump. Only horizontal installation is allowed for NK pumps. Contact CAUTION Grundfos for information on extra installation requirements if special Hot or cold surface installation positions are needed.

  • Page 13: Mechanical Installation

    6. Mechanical installation The density of concrete, indicated by δ, is usually taken as 0.08 lb/in (2,200 kg/m 6.1 Foundation • In installations where noiseless operation is particularly important, we recommend a foundation with a mass up to 5 • We recommend that you install the pump on a plane and rigid times that of the pump.
  • Page 14 6.1.1 Grouting of horizontally mounted NK pumps 6.1.2 Preparing the foundation For NK pumps with 2-pole motors equal to or bigger than 60 hp (45 We recommend the following procedures to ensure a good kW) grouting of the base frame is mandatory in order to prevent foundation: vibration energy from the rotating motor and liquid flow to evolve.
  • Page 15 6.1.3 Levelling the base frame 6.1.4 Preliminary alignment Follow the steps below to level the base frame: DANGER 1. Lift or jack up the base frame to the final level 0.75 - 1.25 Electric shock inches (19-32 mm) above the concrete foundation, and support Death or serious personal injury the base frame by means of blocks and shims both at the ‐...
  • Page 16 4. The free end of the steel bar must be 2/3 the height of the base frame to ensure a proper grouting. • • • • • • • • • • • • • • • • • • •...

  • Page 17: Alignment Of Pump And Motor

    6.2 Alignment of pump and motor Sleeve couplings When a complete unit is supplied assembled from the factory, the (ref) Parallel Angular coupling halves have been accurately aligned by means of foil Sleeve Size inch inch inch inserted under the pump and motor mounting surfaces as required. As the pump/motor alignment may be affected during transport and 0.010 0.25...
  • Page 18 Angular misalignment Parallel offset misalignment End float Misalignment limits for grid coupling Installation limits Cover fastener tightening torque Lube weight values Inch or Metric Parallel offset-P Angular (X-Y) Hub gap (D) 10% Size series fastener Max. Max. Max. Max. Max. Max.

  • Page 19: Re-Greasing The Grid Coupling

    Use the same grease for the coupling as for the ball bearings. Grundfos recommends SKF SYSTEM 24 lubricators, type LAGD 125/HP2 or LAGD 60/HP2. To re-grease the grid coupling, follow the steps below: 1.

  • Page 20: Pipes And Connections

    6.4 Pipes and connections 6.4.3 Connecting the outlet pipes We recommend that you use long horizontal outlet pipes. 6.4.1 Pipe system When installing the pipes, the pump housing must not be stressed • Install a valve near the outlet port to allow for isolation of the by the pipes.

  • Page 21: Expansion Joints

    6.5.2 Vibration dampers Rubber bellows expansion joint with limiting rods To prevent the transmission of vibrations to buildings, we recommend that you isolate the pump foundation from building parts by means of vibration dampers. This decision must be made by the customer or designer or consultant of the installation. The selection of the right vibration damper requires the following data: •...

  • Page 22: Bearing Bracket

    Pt100 sensors for monitoring the temperature of the bearings. These sensors can be factory-fitted, but can also be retrofitted. A Grundfos sensor is available. • A: 1/4" tapping for Pt100 sensor Pt100 sensors fitted in bearing bracket...

  • Page 23: Pressure Gauge And Mano-Vacuum Gauge

    6.9 Pressure gauge and mano-vacuum gauge 7.1 Voltage and frequency variation To ensure continuous monitoring of the operation, we recommend The motor will operate satisfactorily under the following voltage and that you install a pressure gauge on the outlet side and a mano- frequency variations, but not necessarily in accordance with the vacuum gauge on the inlet side.

  • Page 24: Synchronous Motors

    Pumps fitted with synchronous motors must be connected to a All three-phase motors can be connected to frequency converters. Grundfos CUE frequency converter. Frequency converter operation will often expose the motor insulation system to a heavier load causing the motor to be noisier than usual due to eddy currents caused by voltage peaks.

  • Page 25: Startup

    8. Startup 8.2.2 Priming the product in inlet operation with non-return valve The inlet pipe and the pump must be filled with liquid and vented Do not start the pump until it has been filled with liquid and before the pump is started. vented.

  • Page 26: Checking The Direction Of Rotation

    8.3 Checking the direction of rotation 8.4 Starting up the pump 1. Fully open the isolating valve on the inlet side of the pump and leave the isolating valve on the outlet side almost closed. The pump must be filled with liquid when checking the direction of rotation.

  • Page 27: Shaft Seal Run-In Period

    8.5 Shaft seal run-in period The seal faces are lubricated by the pumped liquid, meaning that there may be a certain amount of leakage from the shaft seal. When the pump is started for the first time, or when a new shaft seal is installed, a certain run-in period is required before the leakage is reduced to an acceptable level.

  • Page 28: Service

    Pump with greased-for-life bearings If you request Grundfos to service the product, contact Grundfos with details about the liquid before returning the product for service. Otherwise, Grundfos can refuse to accept the product for service.
  • Page 29 See section Taking the grease quantities: product out of operation. New bearings must be filled with grease according to Grundfos specifications. Clean up all the used grease in the bearing bracket before replacing the new bearing. Grease quantity [g]...

  • Page 30: Basic Characteristics

    Renewing the grease Grundfos recommends SKF LGHP2 grease for relubrication. See the table below. If there is visible grease leakage, we recommend that you open the bearing bracket cover and replace the V ring. Basic characteristics See section Taking the product out of operation.

  • Page 31: Applying Sealant To Plugs

    Freezing of the pumped liquid can also be prevented by filling the pump with 9.4 Service kits antifreeze solution. Service kits for the products, see Grundfos Product Center in www.grundfos.com or Service Kit Catalogue. 10. Taking the product out of operation 10.1 Protecting the pump during periods of inactivity...

  • Page 32: Storing The Product

    10.4 Storing the product 1. The contractor must inspect the equipment on delivery and make sure that it is stored in such a way that corrosion and damage are avoided. 2. If you do not operate the pump soon after arrival, store it in a clean, dry place under slow, moderate changes in ambient temperature.

  • Page 33: Fault Finding The Product

    11. Fault finding the product CAUTION Hot or cold surface DANGER Minor or moderate personal injury Electric shock ‐ When pumping hot or cold liquids, make sure that Death or serious personal injury persons cannot accidentally come into contact with hot ‐...
  • Page 34 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 35: Technical Data

    The minimum and maximum flow rates are indicated either on the performance curve pages in the relevant data booklets, or on a above these limits. curve for a specific pump when selecting it in the Grundfos Product 12.1.2 Liquid temperature Center. See www.grundfos.com.
  • Page 36 12.1.8 Shaft seals We do not recommend that you operate the pump at The operating range of the seals is described for two main maximum temperature and maximum pressure at the applications: pumping of water or pumping of coolants. same time, as it results in reduced seal life and the occurrence of periodic noise.

  • Page 37: Original Installation And Operating Instructions 12.3 Operation With Combustion Engine

    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 38 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 39 93048245 12.2023 ECM: 1377449 www.grundfos.com...