Alfa Laval LKH Series Instruction Manual
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Alfa Laval LKH Series Instruction Manual

Centrifugal pump
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Instruction Manual
LKH Centrifugal Pump
ESE00698-EN30
Original manual
2022-07

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Milion Tegegn
March 26, 2025

Alfa Laval Pump LKH-85 manual pdf

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Milion Tegegn
March 26, 2025

Mechanical seal type and part number

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Summary of Contents for Alfa Laval LKH Series

  • Page 1 Instruction Manual LKH Centrifugal Pump ESE00698-EN30 2022-07 Original manual...

  • Page 3: Table Of Contents

    Table of contents The information herein is correct at the time of issue but may be subject to change without prior notice 1. EC Declaration of Conformity ................ 2. Safety ....................2.1. Important information ................2.2. Warning signs ..................2.3. Safety precautions ................3.

  • Page 4: Ec Declaration Of Conformity

    1 EC Declaration of Conformity Revision of Declaration of Conformity 2013-12-03 The Designated Company Alfa Laval Kolding A/S Company Name Albuen 31, DK-6000 Kolding, Denmark Address +45 79 32 22 00 Phone No. hereby declare that Pump Designation LKH-5, LKH-10, LKH-15, LKH-20, LKH-25, LKH-35, LKH-40, LKH-45, LKH-50, LKH-60, LKH-70, LKH-85, LKH-90...

  • Page 5: Safety

    How to to to contact contact Alfa contact Alfa Alfa Laval Laval Laval Contact details for all countries are continually updated on our website. Please visit www.alfalaval.com to access the information directly.

  • Page 6: Warning Signs

    2 Safety Unsafe practices and other important information are emphasised in this manual. Warnings are emphasised by means of special signs. Always Always read Always read the read the manual manual before manual before using before using using the the pump! pump! pump! 2.2 Warning signs...

  • Page 7: Safety Precautions

    Always handle lye and acid with great care. Always Never Never use the pump for products not mentioned in the Alfa Laval pump selection program. Never The Alfa Laval pump selection program can be acquired from your local Alfa Laval sales company. Maintenance: Maintenance: Maintenance: Always Always read the technical data thoroughly.
  • Page 8 Always Storage: Storage: Storage: Ideally as a guide Alfa Laval would recommend: - Store supplied product as supplied in original packaging - Port opening should be protected against any ingress - Bare steel (not stainless) should be lightly oiled/greased - Store in a clean, dry place without direct sunlight or UV light - Temperature range -5 to 40°C...

  • Page 9: Installation

    3. Motor instructions. CAUTION CAUTION CAUTION Alfa Laval cannot be held responsible for incorrect unpacking. WARNING: WARNING: WARNING: Be aware that certain pump configurations can tilt, and therefore cause injuries to feet or fingers. The pump should be supported underneath the adaptor, when not installed in the process line.
  • Page 10 3 Installation Step 4 4 4 Step Step Remove the shroud before lifting! Always remove the shroud, if fitted, before lifting the pump. Step 5 5 5 Step Step ONLY ONLY ONLY LKH LKH- - - 85 85 and and LKH LKH- - - 90 NOT use eyebolt in casing to lift the pump.

  • Page 11: Installation

    Please ensure that the pump shaft can be rotated by hand before start-up. WARNING: WARNING: WARNING: Alfa Laval recommends the supply disconnecting device shall be in accordance with EN60204-1. Always disconnect the supply disconnecting device safely after installation before continuing the installation. Step Step Step 2 2 2 Ensure at least 0.5 m (1.6 ft) clearance around the pump.
  • Page 12 - See pre-use check in section 3.3 Pre-use check - pump without impeller screw. The large pump sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump. Step 3 3 3 Step Step Check that the flow direction is correct.
  • Page 13 - See pre-use check in section 3.3 Pre-use check - pump without impeller screw. The large pump sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump. Step 6 6 6 Step...
  • Page 14 - See pre-use check in section 3.3 Pre-use check - pump without impeller screw. The large pump sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump. No gaps between connections on pump inlet and inlet pipe, and pump outlet and outlet pipe.
  • Page 15 - See pre-use check in section 3.3 Pre-use check - pump without impeller screw. The large pump sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump. Ensure stud bolts in casing are aligned with holes in backplate.
  • Page 16 Read the instructions carefully and pay special attention to the warnings! Always check the pump before operation. - See pre-use check in section 3.3 Pre-use check - pump without impeller screw. The large pump sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump. Note Note Note In case of shaft seal leakage, the media will drip from the slot in the bottom of the adaptor.
  • Page 17 The large pump sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump. Always ensure the adaptor shield and motor fan guard are present and mounted correctly and allow no access to rotating...

  • Page 18: Pre-Use Check - Pump Without Impeller Screw

    3 Installation Read the instructions carefully and pay special attention to the warnings! LKH-5 to -60 comes without impeller screw as standard but can be supplied with one. Check the direction of rotation of the impeller before operation. - See the indication label on the pump. 3.3 Pre-use check - pump without impeller screw Step 1 1 1 Step...

  • Page 19: Pre-Use Check - Pump With Impeller Screw

    3 Installation Read the instructions carefully and pay special attention to the warnings! LKH-5 to -60 comes without impeller screw as standard but can be supplied with one. Check the direction of rotation of the impeller before operation. - See the indication label on the pump. 3.4 Pre-use check - pump with impeller screw Never start in the wrong direction of rotation with Never...

  • Page 20: Recycling Information

    At the end of use, the equipment must be recycled according to relevant local regulations. Besides the equipment itself, any hazardous residues from the process liquid must be taken into consideration and dealt with in a proper manner. When in doubt, or in the absence of local regulations, please contact your local Alfa Laval sales company.

  • Page 21: Operation

    Always read the technical data thoroughly. See chapter 6 Technical data Always CAUTION CAUTION CAUTION Alfa Laval cannot be held responsible for incorrect operation/control. Step Step Step 2 2 2 Never touch the pump or the pipelines when pumping hot...
  • Page 22 4 Operation Read the instructions carefully and pay special attention to the warnings! Step 4 4 4 Step Step CAUTION CAUTION CAUTION The shaft seal must not run dry. CAUTION CAUTION CAUTION Never Never throttle the inlet side. Never *) Do Do not not allow allow to to to run...

  • Page 23: Trouble Shooting

    4 Operation Pay attention to possible faults. Read the instructions carefully. 4.2 Trouble shooting NOTE! NOTE! NOTE! Read the maintenance instructions carefully before replacing worn parts. Remedy Problem Problem Problem Cause/result Cause/result Cause/result Remedy Remedy Motor overloaded Pumping of viscous liquids Larger motor or smaller impeller Pumping of high density liquids Low outlet pressure (counter...

  • Page 24: Recommended Cleaning

    4 Operation The pump is designed for cleaning in place (CIP). CIP = Cleaning In Place. Study the instructions carefully and pay special attention to the warnings! NaOH = Caustic Soda. = Nitric acid. 4.3 Recommended cleaning Step Step Step 1 1 1 Caustic Caustic danger! Caustic...
  • Page 25 4 Operation The pump is designed for cleaning in place (CIP). CIP = Cleaning In Place. Study the instructions carefully and pay special attention to the warnings! NaOH = Caustic Soda. = Nitric acid. Step 4 4 4 Step Step Always Always Always rinse!

  • Page 26: Maintenance

    (See chapter 7 Parts list and service kits). Ordering Ordering Ordering spare spare spare parts parts parts Contact your local Alfa Laval sales company. Note: Note: Note: If the pump is supplied with FEP O-rings, Alfa Laval recommends that the casing O-ring is replaced during pump maintenance.
  • Page 27 5 Maintenance Maintain the pump with care. Read the instructions carefully and pay special attention to the warnings! Always keep spare shaft seals and rubber seals in stock. See separate motor instructions. Check the pump for smooth operation after service. Safety check check Safety...

  • Page 28: Cleaning Procedure

    5 Maintenance 5.2 Cleaning Procedure Cleaning procedure procedure for for soiled soiled impeller impeller screw screw tapped tapped hole: hole: Cleaning Cleaning procedure soiled impeller screw tapped hole: Warning: Warning: Warning: Always follow the instructions in the safety data sheet for the cleaning agent. 1.

  • Page 29: Dismantling Of Pump/Shaft Seals

    5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly. : Relates to the shaft seal. 5.3 Dismantling of pump/shaft seals Step Step Step 1 1 1 A. LKH-5: Remove screws (56), spring washers (56a), clamps (55+55a) and pump casing (29).
  • Page 30 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly. : Relates to the shaft seal. Step 3 3 3 Step Step Remove screw (23) and safety guard (22). Step Step Step 4 4 4 1.
  • Page 31 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly. : Relates to the shaft seal. Step 6 6 6 Step Step 1. Remove the stationary seal ring (11). 2. Remove the O-ring (12) from back plate (25). *) Use the tool supplied.

  • Page 32: Assembly Of Pump/Single Shaft Seal

    5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly. : Relates to the shaft seal. 5.4 Assembly of pump/single shaft seal Step Step Step 1 1 1 1. Remove spring (13). NOTE! NOTE! NOTE!
  • Page 33 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly. : Relates to the shaft seal. Step 5 5 5 Step Step 1. Clean the sealing surfaces with contact cleaner before fitting back plate (25).
  • Page 34 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Handle scrap correctly. : Relates to the shaft seal. Step 8 8 8 Step Step Fit safety guards (22) and screw (23) and tighten. If pump is not supplied with flush connections, the holes in the adaptor will be covered by the guard.

  • Page 35: Assembly Of Pump/Flushed Shaft Seal

    5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. 5.5 Assembly of pump/flushed shaft seal Step Step Step 1 1 1 Use ø63 mm tube! Flushed Flushed...
  • Page 36 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. Step 5 5 5 Step Step Lubricate O-ring (26) and slide it onto back plate (25). Step Step Step 6 6 6...
  • Page 37 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. Step 8 8 8 Step Step Fit safety guard (22) and screw (23) and tighten. Step Step Step 9 9 9...

  • Page 38: Assembly Of Pump/Double Mechanical Shaft Seal

    5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. 5.6 Assembly of pump/double mechanical shaft seal Step Step Step 1 1 1 1.
  • Page 39 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. Step 6 6 6 Step Step Lubricate O-ring (26) and slide it onto back plate (25). Step Step Step 7 7 7...
  • Page 40 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. Step 9 9 9 Step Step Fit safety guard (22) and screw (23) and tighten. Step Step Step 10...

  • Page 41: Adjustment Of Shaft (Lkh-5)

    5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. 5.7 Adjustment of shaft (LKH-5) Step Step Step 1 1 1 1.
  • Page 42 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. Step 4 4 4 Step Step For the the double double mechanical mechanical shaft shaft seal:...

  • Page 43: Adjustment Of Shaft (Lkh-10 To -90)

    5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. 5.8 Adjustment of shaft (LKH-10 to -90) LKH- - - 70 70 to to to - - - 90 For securing the best fixture to the motor shaft ensure the following: Conical surfaces on the pump shaft and compression rings are applied with grease.
  • Page 44 5 Maintenance Read the instructions carefully. The items refer to the parts list and service kits section. Lubricate the rubber seals before fitting them. : Relates to the shaft seal. Step 4 4 4 Step Step For the the double double mechanical mechanical shaft shaft seal:...

  • Page 45: Technical Data

    -60, -70, -75, -85 and -90. The instruction manual is part of the delivery. Read the instructions carefully. The large pump sizes are very heavy. Alfa Laval therefore recommends the use of a lifting crane when handling the pump. Data...

  • Page 46: Relubrication Intervals

    Inform personnel about the technical data. 6.2 Relubrication intervals For recommended grease types and general maintenance follow the recommendations in the motor instruction manual. For relubrication intervals see motor name plate. For further information contact your local Alfa Laval Technical Support. Warning: Warning: Warning: Polyurea...

  • Page 47: Noise Emission

    6 Technical data It is important to observe the technical data during installation, operation and maintenance. Inform personnel about the technical data. 6.5 Noise emission Pump Pump Pump Type Type Type Sound Sound pressure Sound pressure pressure level level (dBA) level (dBA) (dBA)

  • Page 48: Parts List And Service Kits

    7 Parts list and service kits The drawing shows LKH pump, sanitary version. 7.1 LKH-5 Sanitary version US legs are different to the ones shown. For further information see US spare parts. Impeller screw Fitting of legs Fitting of back plate 0.75-1.1 kW Flushed shaft seal Single shaft seat...

  • Page 49: Lkh-10, -15, -20, -25, -35, -40, -50, -60, -70, -75, -85, -90 Sanitary Version

    7 Parts list and service kits The drawing shows the LKH pump, sanitary version. 7.2 LKH-10, -15, -20, -25, -35, -40, -50, -60, -70, -75, -85, -90 sanitary version LKH10 -75 LKH-85 and LKH-90 US legs are different to the ones shown. For further information see US spare parts. Only used for 0.75, 1.1 Fitting of back plate Only used for 55 - 110 kW...

  • Page 50: Lkh - Product Wetted Parts

    7 Parts list and service kits The drawing shows the LKH pump, sanitary version. 7.3 LKH - Product wetted parts Parts list list Parts Parts list Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground. IDF Malepart...
  • Page 51 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Parts Parts Parts list list list Pos. Denomination...
  • Page 52 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 53 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Parts Parts Parts list list list Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 54 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Cap nut Washer Bolt O-ring �♦��∆▲ ������ Impeller Impeller for impeller screw Impeller screw 57 * Inducer O-ring ♦�▲���...
  • Page 55 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 56 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.

  • Page 57: Lkh - Motor-Dependent Parts

    7 Parts list and service kits The drawing shows the LKH pump, sanitary version. 7.4 LKH - Motor-dependent parts Parts list list Parts Parts list...
  • Page 58 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground. Compression ring with thread Compression ring without thread Screw Washer Shaft incl.
  • Page 59 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Distance sleeve Pivot screw Parts Parts Parts list list list...
  • Page 60 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 61 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Leg bracket Nut for leg Screw for leg Parts Parts Parts list list list Pos. Denomination Parts list list Parts Parts...
  • Page 62 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground. Motor ABB Motor ABB...
  • Page 63 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Parts Parts Parts list list list Pos. Denomination Parts list list Parts Parts list Pos. Denomination Parts Parts Parts list list list...
  • Page 64 7 Parts list and service kits The drawing shows the LKH pump, sanitary version.

  • Page 65: Lkh - Shaft Seal

    7 Parts list and service kits The drawing shows the LKH pump, sanitary version. 7.5 LKH - Shaft seal Parts list list Parts Parts list...
  • Page 66 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground. Seal housing Screw for seal housing Tube Fitting Seal housing Drive ring...
  • Page 67 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground. Stationary seal ring O-ring Spring Rotating seal ring O-ring...
  • Page 68 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 70 LKH - Shaft seal and service kits * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 71 LKH - Shaft seal and service kits Service Service Service kits kits kits Denomination EPDM Denomination Denomination EPDM EPDM Service Service kit kit kit for Service for single single single shaft shaft shaft seal seal seal C/SiC C/SiC C/SiC � Service kit, kit, C/SiC C/SiC (LKH...
  • Page 72 LKH - Shaft seal and service kits * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 73 LKH - Shaft seal and service kits Service Service Service kits kits kits Denomination EPDM Denomination Denomination EPDM EPDM Service Service kit kit kit for Service for flushed flushed flushed shaft shaft shaft seal seal seal and and impeller impeller impeller screw screw screw C/SiC...
  • Page 74 LKH - Shaft seal and service kits Denomination Denomination Denomination EPDM EPDM EPDM � Service Service kit, Service kit, SiC/SiC kit, SiC/SiC (LKH SiC/SiC (LKH- - - 85) (LKH 85) ....................... 9611922972 9611922972 9611922973 9611922974...
  • Page 76 © 1999-02 Alfa Laval Corporate AB This document and its contents is owned by Alfa Laval Corporate AB and protected by laws governing intellectual property and thereto related rights. It is the responsibility of the user of this document to comply with all applicable intellectual property laws. Without limiting any rights related to this document, no part of this document may be copied, reproduced or transmitted in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without the expressed permission of Alfa Laval Corporate AB.

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