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 CM, CME English (GB) Service instructions ............... . 4...

  • Page 4: Table Of Contents

    Type identification ......5 The symbols and hazard statements below may appear in Grundfos Nameplate ....... 5 installation and operating instructions, safety instructions and Type key .

  • Page 5: 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 contain more than one code (letter). 2.1 Nameplate Type Model °C °F liq,max...

  • Page 6: Type Key

    2.2 Type key CM, CME Code Description Example Impellers/chambers EN 1.4401/AISI 316 CME 10-8 A-R-A-E-A V B E X-X-X-X Sleeve EN 1.4301/AISI 304 Code Explanation Pump shaft EN 1.4301/AISI 304 Code for type range Impellers/chambers EN 1.4301/AISI 304 Rated flow rate at 50 Hz [m Special version Number of impellers Rubber parts in pump (excl.
  • Page 7 Code Description Mains plug Cable glands Harting plug With cable The type key cannot be used for ordering, as not all com- binations are possible.

  • Page 8: 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 10-12 Staybolt, CM 1, 3, 5, cast iron...

  • Page 9: Service Tools

    4. Service tools 4.1 Standard tools Pos. Designation For pos. Further information Product 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 10: Dismantling And Assembly

    5. Dismantling and assembly Related information 3. Tightening torques and lubricants 5.1 General information 4. Service tools 5.9 Replacement of impellers and spacing pipes DANGER Electric shock 7.1 CM 1, 3, 5 Death or serious personal injury 7.2 CM 10, 15, 25 ‐ Before starting any work on the product, make sure that the power supply has been switched off and that it 5.2 CM 1, 3, 5, cast iron cannot be accidentally switched on.
  • Page 11 5.2.2 Assembly 7. Fit impeller (pos. 49), spacing pipe (pos. 64), gasket (pos. 139b) and chamber plate (pos. 4f). Assembly of MG 71 and MG 80, see the section on as- 8. Continue the assembly until chamber for bearing (pos. 4a). sembly.

  • Page 12: Cm 1, 3, 5, Stainless Steel

    5.3 CM 1, 3, 5, stainless steel 5.3.1 Dismantling 1. Remove staybolts (pos. 26). 2. Remove clamping flange (pos. 6a) and sleeve (pos. 16). 3. Remove chamber (pos. 4e). 4. Hold clamp (pos. 64c), and remove nut (pos. 67). 5. Remove lock washers (pos. 66) and clamp (pos. 64c). 6.
  • Page 13 5.3.2 Assembly Assembly of MG 71 and MG 80, see the section on as- sembly. Assembly of MG 90 and MG 100, see the section on assembly. 1. Fit cover plate (pos. 32) and O-ring (pos. 31). Lubricate the O- ring.

  • Page 14: Cm 10, 15, 25, Cast Iron

    5.4 CM 10, 15, 25, cast iron 5.4.2 Assembly 5.4.1 Dismantling Assembly of MG 71 and MG 80, see the section on as- 1. Remove staybolts (pos. 26). sembly. Assembly of MG 90, MG 100, MG 112 and MG 132, see 2.

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

    8. Fit spring (pos. 108) and driver (pos. 112). 5.5 CM 10, 15, 25, stainless steel 5.5.1 Dismantling 1. Remove staybolts (pos. 26). 2. Remove clamping flange (pos. 6a) and sleeve (pos. 16). 3. Remove the chamber plate (pos. 4f). 4.
  • Page 16 5.5.2 Assembly Assembly of MG 71 and MG 80, see the section on as- sembly. Assembly of MG 90, MG 100, MG 112 and MG 132, see the section on assembly. 1. Fit cover plate (pos. 32) and O-ring (pos. 31). Lubricate the O- ring.

  • Page 17: Mg 71 And Mg 80 Motors

    5.6 MG 71 and MG 80 motors 5.7 MG 90, MG 100, MG 112 and MG 132 motors 5.6.1 Dismantling 5.7.1 Dismantling 1. Remove screws (pos. 152). 1. Only cast iron pumps: Remove screws (pos. 2b). 2. Remove fan cover (pos. 151). 2.

  • Page 18: Checking And Replacing Impellers And Chambers

    Therefore, Grundfos offers impellers and spacing pipes as complete service kits, including the specific quantity and type of impellers and spacing pipes for all CM, CME pump models.

  • Page 19: Fault Finding

    6. Fault finding DANGER Electric shock Death or serious personal injury ‐ Before starting any work on the product, make sure that the power supply has been switched off and that it cannot be accidental- ly switched on. WARNING Corrosive liquids Death or serious personal injury ‐...

  • Page 20: The Motor-Protective Circuit Breaker Trips Out Occasionally

    Cause Remedy Motor winding is defective. • Repair or replace the motor. The pump is mechanically blocked. • Switch off the electricity supply, and clean or repair the pump. The setting of the motor-protective circuit breaker is too low. • Set the motor-protective circuit breaker according to the rated current of the motor (I ).

  • Page 21: The Motor-Protective Circuit Breaker Has Not Tripped Out, But The Pump Is Inadvertently Out Of Operation

    6.4 The motor-protective circuit breaker has not tripped out, but the pump is inadvertently out of operation. Cause Remedy Supply failure. • Switch on the switch. • Check cables and cable connections for defects and loose connections. Fuses are blown. •...

  • Page 22: Drawings

    7. Drawings 7.1 CM 1, 3, 5 CM 1, 3, 5, stainless steel...
  • Page 23 CM 1, 3, 5, cast iron...
  • Page 24 7.2 CM 10, 15, 25 CM 10, 15, 25, stainless steel...
  • Page 25 CM 10, 15, 25, cast iron...

  • Page 26: 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 27: Key For Cm 10, 15, 25

    CM 1, 3, 5, stainless steel Pos. 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 Chamber plate, SS pumps Chamber without guide vanes Chamber without guide vanes and sand lift...

  • Page 28: Cm 10, 15, 25, Stainless Steel

    8.6 CM 10, 15, 25, stainless steel CM 10, 15, 25, stainless steel Pos. Pos. 1 is next to the motor. CM 10, 15, 25, stainless steel Pos. Pos 1 is next to the motor.
  • Page 29 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 30 99698874 07.2022 ECM: 1345978 www.grundfos.com...

This manual is also suitable for:

Cme series

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