Grundfos SP 18 Service Instructions Manual
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Grundfos SP 18 Service Instructions Manual

Grundfos SP 18 Service Instructions Manual

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GRUNDFOS INSTRUCTIONS
SP/SPE 18, SP/SPE 32
Service instructions

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Summary of Contents for Grundfos SP 18

  • Page 1 GRUNDFOS INSTRUCTIONS SP/SPE 18, SP/SPE 32 Service instructions...
  • Page 3 SP/SPE 18, SP/SPE 32 English (GB) Service instructions ............... . 4...

  • Page 4: Table Of Contents

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

  • Page 5: Identification

    Rated flow [m Head at rated flow rate [m] Speed [min MEI index CE mark and approvals Production code 2.2 Type key Example: SP 18-6 N Type range Rated flow rate [m Number of stages Material: = EN 1.4301 = EN 1.4401...

  • Page 6: Tools

    3. Tools 3.1 Special tools Pos. Description For pos. Motor size Further information Part number Knock-out spanner 4", 6", 8" Spanner size: 46 mm 00SV0121 4" 00SV0351 Spline key 6" 00SV0352 8" 00SV0353 Set consisting of support tool, Punch set for guide bearing 142a 4", 6", 8"...

  • Page 7: Standard Tools

    3.2 Standard tools Pos. Description For pos. Motor size Further information Measuring range up Depth gauge 14. 14a 4", 6", 8" to 300 mm Band pipe wrench for fitting of sleeve 4", 6", 8" Puller for wear ring 4", 6", 8" Hexagon key set 4", 6", 8"...

  • Page 8: Torque Tools

    3.3 Torque tools Pos. DescriptionDescription For pos. Motor size Further information Part number Torque screwdriver 4", 6", 8" 1-6 Nm 00SV0438 11, 19 4", 6", 8" 20-100 Nm 00SV0269 Torque wrench 4", 6", 8" 20-200 Nm 00SV0400 4", 6", 8" Spanner size: 17 mm 00SV0270 Ring spanner for torque wrench...

  • Page 9: Service Animation

    Klubersynth Nut for strap 4", 6", 8" First stage (96962902) Second stage Third stage (pump with sleeve) SP 18 Split cone nut 4", 6", 8" SP 32 Retainer for valve seat 4", 6", 8" Screw for clamp 4", 6", 8"...

  • Page 10: Failure Analysis

    5. Failure analysis Follow the instructions below. Position numbers of pump components (digits) refer to section Identify the failure properly and go through the check list before Drawings. dismantling the product. Position numbers of tools (letters) refer to section Tools. Related information Related information 13. Analysis check list...

  • Page 11: Straps

    6.2 Straps 5. Remove the straps. 1. Fasten the adaptor (I) to the mounting plate (J) with the hexagon socket head screws (K). 6.3 Valve casing 1. Remove valve casing (1/1a), valve cup (2) and top chamber (4/4a). In large pump models, the valve casing, valve seat and valve cup are combined in a relieved valve casing (1a).

  • Page 12: Top Impeller

    6.4 Top impeller 6.6 Bottom chamber with upthrust bearing 1. Loosen the split cone nut 1-2 turns (11) with the knock-out 1. Remove the upthrust bearing from the shaft. spanner (B). 2. Loosen the split cone nut with the knock-out spanner. 2.

  • Page 13: Replacing The Wear Parts

    7. Replacing the wear parts 4. Clean its groove. • Make sure that all parts from the given service kit are available. 5. Lubricate the groove with soapy water, and place the new rubber bearing. • Make sure to replace all neck and O-rings. •...

  • Page 14: Neck Ring, Rubber Bearing And Chambers

    7.2 Neck ring, rubber bearing and chambers 2. Ensure the pullers grip on the wear ring by placing it between the jaws of a vice. 1. Replace all neck rings and rubber bearings in the chambers. 7.3 Wear ring and impeller 1.

  • Page 15: Valve Casing

    5. Make sure that the wear ring is placed properly and that the 7.4 Valve casing impeller is not deformed. 7.4.1 Standard valve casing 1. Position the valve casing (1) upside down on the support tool from the punch set (D). 2.
  • Page 16 6. Fit the new guide bearing on the punch. 4. Remove the retainer ring and valve cup. 7. Position the new guide bearing in the valve casing. 8. Knock the guide bearing in the hole with a plastic mallet. 5. Position the valve casing upside down on the support tool from the punch set.
  • Page 17 7. Position the punch tool in the centre of the guide bearing and knock it out with a plastic mallet. 14. Clean the O-ring groove. 15. Lubricate the groove with soapy water, and fit a new O-ring. 8. Turn the support tool upside down so that its recess is pointing upwards.

  • Page 18: Suction Interconnector

    20. Tighten the retainer ring with the specified torque, using a torque wrench (R). Related information 4. Tightening torques and lubricants 7.5 Suction interconnector 1. Remove the neck ring (7) with a screwdriver. 2. Clean its groove. 3. Lubricate the groove with soapy water, and fit the new neck ring.

  • Page 19: Pump Assembly

    8. Pump assembly 8.2 Bottom chamber with upthrust bearing SP/SPE 18 1. Fit the upthrust bearing on top of the bottom impeller. WARNING Crushing of hands Death or serious personal injury ‐ Use lifting equipment which is approved for the weight of the product.

  • Page 20: Chambers

    8.4 Chambers 8.7 Straps 1. Fit an impeller to the bottom chamber. 1. Fit the straps in the suction interconnector. 2. Lubricate the thread of the straps with grease. 3. Fit the strap to the valve casing. 2. Tighten the split cone nut with the specified torque, using a torque wrench together with the split cone spanner.

  • Page 21: Quality Control

    9. Quality control 9.2.2 Axial clearance, shaft in bottom position 1. Turn the shaft with the spline key while pulling the shaft into 9.1 Rotating the shaft bottom position. 1. Position the pump so that it the shaft is easy to turn. 2.

  • Page 22: Checking The Motor Shaft Height

    0.5 MΩ, the motor should be removed for motor or cable repair. Local regulations may specify other values for the insulation resistance. For further instructions, see the Grundfos Product Center at www.grundfos.com. 10.2 Winding resistance...

  • Page 23: Mounting The Motor And Cable Guard

    11. Mounting the motor and cable guard 11.1 Mounting the motor 1. Mount the motor on the chamber stack. 2. Lubricate the motor staybolts with grease. 3. Fit the nuts on the staybolts. 4. Cross-tighten the nuts in three steps with the specified torque, using tools S and R.

  • Page 24: Drawings

    12. Drawings 12.1 Exploded view 142a 142a SP18...
  • Page 25 142a 142a SP32 Related information 6. Dismantling the product...

  • Page 26: Sectional Drawing

    12.2 Sectional drawing 142a 142a SP18 Pos. Description Pos. Description Standard valve casing Clamp, top Relieved valve casing Clamp, bottom Valve cup Screw Valve seat Bracket for cable guard Top chamber, complete (for standard valve casing) Top chamber, complete (for relieved valve casing) Bolt Neck ring Rubber bearing...
  • Page 27 142a 142a SP 32 Pos. Description Pos. Description Standard valve casing Strap Relieved valve casing Cable guard Valve cup Clamp, top Valve seat Clamp, bottom Top chamber, complete (for standard valve casing) Screw Top chamber, complete (for relieved valve casing) Bracket for cable guard Bottom bearing set Neck ring...

  • Page 28: Analysis Check List

    13. Analysis check list Component Problem Yes/No Comment Check before dismantling Are there any dents on the motor? Is the motor cable damaged? Is the cable plug intact? Motor Is the motor or submersible drop cable joint damaged? Is the submersible drop cable damaged? Are there any signs of corrosion? Is the strainer broken or damaged? Is the non-return valve functional?

  • Page 29: Document Quality Feedback

    Component Problem Yes/No Comment Is the shaft damaged? Is the shaft straight? Shaft Are there any signs of corrosion? In case of corrosion, specify the area in the comments section. Related information 5. Failure analysis 14. Document quality feedback To provide feedback about this document, scan the QR code using your phone’s camera or a QR code app.
  • Page 30 Unit 1, Ground floor, Siu Wai industrial Turkey www.ba.grundfos.com Centre GRUNDFOS Pumps NZ Ltd. GRUNDFOS POMPA San. ve Tic. Ltd. Sti. E-mail: grundfos@bih.net.ba 29-33 Wing Hong Street & 68 King Lam 17 Beatrice Tinsley Crescent Gebze Organize Sanayi Bölgesi Street, Cheung Sha Wan...
  • Page 31 92853609 02.2025 ECM: 1414406 www.grundfos.com...

This manual is also suitable for:

Spe 18Sp 32Spe 32Sp 18-6 n

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