Grundfos CM Series Service Instructions Manual
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Grundfos CM Series Service Instructions Manual

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GRUNDFOS INSTRUCTIONS
CM, CME
Service instructions

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Summary of Contents for Grundfos CM Series

  • Page 1 GRUNDFOS INSTRUCTIONS CM, CME Service instructions...

  • Page 3: Table Of Contents

    English (GB) Service instructions Original service instructions. CONTENTS Page Symbols used in this document Type identification 2.1 Nameplate 2.2 Type key Tightening torques and lubricants Service tools 4.1 Standard tools 4.2 Torque tools Dismantling and assembly 5.1 General information 5.2 CM 1, 3, 5, cast iron 5.3 CM 1, 3, 5, stainless steel 5.4 CM 10, 15, 25, cast iron 5.5 CM 10, 15, 25, stainless steel...

  • Page 4: Type Identification

    2. Type identification This section shows the nameplate, the type key and the codes that can appear in the variant code. As codes can be combined, a code position may Note contain more than one code (letter). 2.1 Nameplate Type Model °C °F...

  • Page 5: Type Key

    2.2 Type key CM, CME Example 10 - 8 A - R - A - E - A V B E X - X - X - Sensor Type range Centrifugal Modular Sensor designation CM with integrated frequency CME: converter Mains plug Rated flow rate A: Cable glands...

  • Page 6: Tightening Torques And Lubricants

    3. Tightening torques and lubricants Pos. Designation Quantity Dimensions Torque [Nm] Lubricant Screw, CM 1, 3, 5 M8 x 40 16 - 18 THREAD-EZE Hexagon socket head cap screw CM 10, 15, 25 M8 x 80 16 - 18 THREAD-EZE ∅18.5 x 2.0 O-ring Plug...

  • Page 7: Service Tools

    4. Service tools 4.1 Standard tools Pos. Designation For pos. Further information Part number Screwdriver 103, 156 SV0803 Cross-head screwdriver Ph2 x 100 SV0279 Torx screwdriver TX30 x 115 mm SV0335 15 mm Ring/open-end spanner 13 mm SV0055 5 mm Hexagon key 6 mm SV0196...

  • Page 8: Dismantling And Assembly

    5. Dismantling and assembly 5.2.2 Assembly Assembly of MG 71 and MG 80, see section 5.6.2. 5.1 General information Note Assembly of MG 90 and MG 100, see section 5.7.2. If it is necessary to dismantle the pump, either because it is 1.

  • Page 9: Cm 1, 3, 5, Stainless Steel

    6. Fit spring (pos. 108) and driver (pos. 112). See fig. 7. 11.Remove O-ring (pos. 31) and cover plate (pos. 32). Dismantling of MG 71 and MG 80, see section 5.6.1. Note Dismantling of MG 90 and MG 100, see section 5.7.1. It is advisable always to replace wear rings Note (pos.

  • Page 10: Cm 10, 15, 25, Cast Iron

    3. Press the stationary shaft seal part home. See fig. 11. 11.Fit impeller (pos. 49), clamp (pos. 64c), washers (pos. 66) and nut (pos. 67). See fig. 14. Warning Do not touch the seal face. Fig. 14 Correct fitting of washers 12.Hold clamp (pos.
  • Page 11 8. Fit spring (pos. 108) and driver (pos. 112). See fig. 19. 5.4.2 Assembly Assembly of MG 71 and MG 80, see section 5.6.2. Note Assembly of MG 90, MG 100, MG 112 and MG 132, see section 5.7.2. 1. Fit discharge part (pos. 2). 2.

  • Page 12: Cm 10, 15, 25, Stainless Steel

    3. Press the stationary shaft seal part home. See fig. 23. 5.5 CM 10, 15, 25, stainless steel 5.5.1 Dismantling Warning 1. Remove staybolts (pos. 26). Do not touch the seal face. 2. Remove clamping flange (pos. 6a) and sleeve (pos. 16). 3.

  • Page 13: Mg 71 And Mg 80 Motors

    10.Fit clamp (pos. 64c), washers (pos. 66) and nut (pos. 67). 5.7 MG 90, MG 100, MG 112 and MG 132 motors See fig. 26. 5.7.1 Dismantling 1. Only cast iron pumps: Remove screws (pos. 2b). 2. Only cast iron pumps: Remove discharge part (pos. 2). 3.

  • Page 14: Checking And Replacing Impellers And Chambers

    5.8 Checking and replacing impellers and chambers Check Replace Impeller Wear ring/wear ring retainer • Check whether it is necessary to replace the impeller due to 1. Prise the wear ring retainer (pos. 65) up and free of the chamber friction between wear ring and impeller skirt.

  • Page 15: Fault Finding

    6. Fault finding Warning Before removing the terminal box cover, make sure that the electricity supply has been switched off. The pumped liquid may be scalding hot and under high pressure. Before any removal or dismantling of the pump, the system must therefore be drained, or the isolating valves on either side of the pump must be closed. Fault Cause Remedy...

  • Page 16: Drawings

    7. Drawings 7.1 CM 1, 3, 5 Fig. 30 CM 1, 3, 5, stainless steel...
  • Page 17 Fig. 31 CM 1, 3, 5, cast iron...
  • Page 18 7.2 CM 10, 15, 25 Fig. 32 CM 10, 15, 25, stainless steel...
  • Page 19 Fig. 33 CM 10, 15, 25, cast iron...

  • Page 20: Order Of Assembly For Chambers And Impellers

    8. Order of assembly for chambers and impellers 8.1 Key for CM 1, 3, 5 Bearings Chamber cpl. Chamber with bearing cpl. Chamber with holes Chamber plate Chamber without guide vanes Impeller 8.2 CM 1, 3, 5, cast iron CM 1, 3, 5, cast iron Pos.

  • Page 21: Key For Cm

    CM 1, 3, 5, stainless steel Pos. Chamber Impeller Chamber Impeller Chamber Impeller Chamber Impeller Chamber Impeller Chamber Impeller * Pos. 1 is next to the motor. 8.4 Key for CM 10, 15, 25 Bearings Chamber cpl. Chamber with bearing cpl. Chamber with holes Impeller located in cast iron component Chamber without sand lift...

  • Page 22: Cm 10, 15, 25, Stainless Steel

    8.6 CM 10, 15, 25, stainless steel CM 10, 15, 25, stainless steel Pos. Chamber Impeller Chamber Impeller Chamber Impeller Chamber Impeller Chamber Impeller * Pos. 1 is next to the motor. CM 10, 15, 25, stainless steel Pos. Chamber Impeller Chamber Impeller...
  • Page 23 Tél.: +32-3-870 7300 20th km. Athinon-Markopoulou Av. Turkey P.O. Box 71 Télécopie: +32-3-870 7301 New Zealand GRUNDFOS POMPA San. ve Tic. Ltd. Sti. GR-19002 Peania GRUNDFOS Pumps NZ Ltd. Gebze Organize Sanayi Bölgesi Belorussia Phone: +0030-210-66 83 400 17 Beatrice Tinsley Crescent Представительство...
  • Page 24 Being responsible is our foundation Thinking ahead makes it possible Innovation is the essence 96957063 1011 The name Grundfos, the Grundfos logo, and the payoff Be–Think–Innovate are registrated trademarks owned by Grundfos Management A/S or Grundfos A/S, Denmark. All rights reserved worldwide. www.grundfos.com...

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