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GRUNDFOS INSTRUCTIONS
NK, NKG
ATEX-approved pumps
Installation and operating instructions

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Summary of Contents for Grundfos NK Series

  • Page 1 GRUNDFOS INSTRUCTIONS NK, NKG ATEX-approved pumps Installation and operating instructions...
  • Page 2 NK, NKG English (GB) Installation and operating instructions ............5 Български...
  • Page 3 Suomi (FI) Asennus- ja käyttöohjeet ..............103 Svenska (SE) Monterings- och driftsinstruktion .
  • Page 4: Table Of Contents

    Temperature class of the pump. These supplementary installation and operating instructions apply The temperature class indicates the to ATEX-approved Grundfos NK, NKG pumps and NK, NKG bare T3-T5 maximum surface temperature of the shaft pumps. The pumps comply with ATEX Directive 94/9/EC.
  • Page 5: Scope Of Atex Categories For Nk, Nkg Pumps

    7. Scope of ATEX categories for NK, NKG pumps Directive ATEX-approved NK, NKG pumps Group I Group II 94/9/EC Category M Category 1 Category 2 Category 3 1999/92/EC Zone 0 Zone 20 Zone 1 Zone 21 Zone 2 Zone 22 Pumps None None...
  • Page 6: Barrier Or Flushing Liquid Connections Of Dead-End Solutions

    See the example at the end of this minimum flow rate. See section 3. Related booklet. installation and operating instructions. A copy is filed by Grundfos and can be traced by means of the product number and serial numbers on the pump nameplate.
  • Page 7: Vacuum Operation Or Suction Lift

    See the installation and operating instructions for the pump in the Grundfos warranty. question. If the data sheet is missing, contact Grundfos for 7. If a pump with double seal (back-to-back) has been chosen, information about the maximum liquid check that the seal chamber is correctly pressurised.
  • Page 8 Dear customer, please fill in the following questionnaire in cooperation with a Grundfos representative. This will help to ensure that Grundfos supplies you with a pump solution adapted to meet exactly your needs in terms of pump type, pump materials, shaft seal arrangement, shaft seal type, elastomers and accessories.
  • Page 9 CIP liquid (cleaning in place) Type of liquid: ________________________________________________ Chemical composition (if available): ________________________________________________ Liquid Temperature during operation: _______________________ [°C] Maximum liquid temperature: _______________________ [°C] Vapour pressure of liquid: _______________________ [bar] Liquid concentration: _______________________ % Liquid pH value: _______________________ Pump sizing Main duty point Q:_______ [m H:_______ [m]...
  • Page 10 Double shaft seal solutions If you chose a tandem or a back-to-back shaft seal solution, you must connect either a flushing system or pressurizing system for barrier liquid to the connection pipes. Tandem shaft seals Pipe connections to Pipe connections to the cartridge seal. Pipe connection to secondary shaft seal.
  • Page 11 Does the application require circulation of the barrier liquid? Yes ____ No ____ (dead-end arrangement) Comments on circulation for the primary shaft seal: _______________________________________________ _______________________________________________ Comments on dead-end arrangement _______________________________________________ _______________________________________________ _______________________________________________ More comments/info about your system: ________________________________________________ ________________________________________________ ________________________________________________ Date: Date: ___________________________________ ___________________________________ Grundfos representative Customer representative...
  • Page 12 GRUNDFOS Hellas A.E.B.E. Минске Turkey 20th km. Athinon-Markopoulou Av. 220123, Минск, New Zealand GRUNDFOS POMPA San. ve Tic. Ltd. Sti. P.O. Box 71 ул. В. Хоружей, 22, оф. 1105 GRUNDFOS Pumps NZ Ltd. Gebze Organize Sanayi Bölgesi GR-19002 Peania Тел.: +(37517) 233 97 65,...
  • Page 13 Thinking ahead makes it possible Innovation is the essence 96528412 0212 The name Grundfos, the Grundfos logo, and the payoff Be–Think–Innovate are registrated trademarks ECM: 1088657 owned by Grundfos Management A/S or Grundfos A/S, Denmark. All rights reserved worldwide. www.grundfos.com...

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Nkg series

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