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GRUNDFOS INSTRUCTIONS
CR, CRI, CRN 1, 3, 5 Model A
50/60 Hz 1/3~
Service instructions

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Summary of Contents for Grundfos CR 1 A

  • Page 1 GRUNDFOS INSTRUCTIONS CR, CRI, CRN 1, 3, 5 Model A 50/60 Hz 1/3~ Service instructions...
  • Page 3 CR, CRI, CRN 1, 3, 5 Model A English (GB) Service instructions ............... . 4...
  • Page 4: Table Of Contents

    Keep the product in a stable and fixed position when working on it. 1.1 Hazard statements WARNING The symbols and hazard statements below may appear in Grundfos Corrosive liquids installation and operating instructions, safety instructions and Death or serious personal injury service instructions.
  • Page 5: Contaminated Products

    Grundfos to service the product, contact Grundfos with details about the pumped liquid before returning the product for service. Otherwise, Grundfos can refuse to accept the product for service. Any application for service must include details about the pumped liquid.
  • Page 6: Dismantling And Assembling The Product

    2. Dismantling and assembling the product 5. Cross-tighten the screws (9) to the correct torque. Check that the gaps on either side of the coupling halves are equal. See the figure below. 2.1 General information If it is necessary to dismantle the pump, either because it is choked or damaged, follow the instructions in the following sections.
  • Page 7: Dismantling And Assembling The Pump Main Parts

    8. Insert a suitable screwdriver between the bottom of the coupling Related information and the shaft seal, and raise the shaft or the coupling against 3.2 Torques stop. See the figure below. 3.2.1 Lubricants 2.5 Dismantling and assembling the chamber stack 2.5.1 Dismantling 1.
  • Page 8: Dismantling And Assembling The Base And The Pump Head

    2.6 Dismantling and assembling the base and the pump 2. Fit the corrugated spring (60) in the pump head. See the figure below. head 2.6.1 Dismantling the base 1. Remove the staybolts (26) from the base (6). 2. Remove the flange connection, if any: a.
  • Page 9: Checking And Replacing Parts

    2.7 Checking and replacing parts Check Replace Impeller Neck ring/retainer for neck ring 1. Prise the retainer for the neck ring (65) up and free of the cham- ber using the puller (C). • Check if it is necessary to replace the impeller due to friction be- 2.
  • Page 10: Additional Information

    3. Additional information Pos. Description Head at rated flow rate, 60 Hz 3.1 Identification Maximum pressure and temperature This section shows the type key, the nameplate and the codes that can appear in the variant type key. As codes can be combined, a Country of production code position may contain more than one letter.
  • Page 11 Pos. Description Number Dimensions Torque Nut CR Nut CRI Nut CRN ∅137.5 x 3.3 mm O-ring Bearing ring See the section on the order of assembly for chambers and impellers. Lock nut Shaft seal Hexagon socket set screw Related information 4.1 CR, CRI, CRN 1, 3 4.2 CR, CRI, CRN 5 5. Order of assembly for chambers and impellers...
  • Page 12: Special Tools

    3.3 Special tools Part num- Pos. Description For pos. Additional information Shaft holder for assembly SV0040 Tubular box spanner for shaft seal SV2007 Puller SV0239 Tool for outer sleeve CRI, CRN V7170478 Tool for corrugated spring CRI, CRN V7170227 Tool for O-ring CRI, CRN V7170230 4-20 Nm...
  • Page 13: Drawings

    4. Drawings 4.1 CR, CRI, CRN 1, 3 Exploded view...
  • Page 14 Sectional drawing 8 10a...
  • Page 15: Cr, Cri, Crn 5

    4.2 CR, CRI, CRN 5 Exploded view...
  • Page 16 Sectional drawing...
  • Page 17: Order Of Assembly For Chambers And Impellers

    5. Order of assembly for chambers and impellers 1. Determine the pump type and the stage variant. Find the pump in the relevant stage survey table. 2. Find the components of each stage in the symbol survey. 5.1 CR, CRI, CRN 1, 3 CR / CRI / CRN 1 &...
  • Page 18: Cr, Cri, Crn 5

    5.2 CR, CRI, CRN 5 CR / CRI / CRN 5 - Stage survey (top), symbol survey (bottom)
  • Page 19 Tel.: +387 33 592 480 Centre Turkey Fax: +387 33 590 465 29-33 Wing Hong Street & 68 King Lam GRUNDFOS Pumper A/S GRUNDFOS POMPA San. ve Tic. Ltd. Sti. www.ba.grundfos.com Street, Cheung Sha Wan Strømsveien 344 Gebze Organize Sanayi Bölgesi E-mail: grundfos@bih.net.ba...
  • Page 20 96546866 03.2022 ECM: 1337363...

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