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-ENUS19
Original manual
2020-01

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Summary of Contents for Alfa Laval LKH Series

  • Page 1 Instruction Manual LKH Centrifugal Pump ESE00698-ENUS19 2020-01 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

    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 manual before before using before using the using the pump! pump! pump! 2.1 Important information...

  • Page 6: 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 7: 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 8 3 Installation 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. The eyebolt is Do NOT for casing removal only.

  • Page 9: Installation

    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. 3.2 Installation Step...
  • Page 10 - 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 4 4 4 Step...

  • Page 11: 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 Step...

  • Page 12: 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 liquid Never...

  • Page 13: 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 14: Operation

    Step Always 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 2 2 2 Step Step Danger of of of burns! burns! Danger Danger...
  • Page 15 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. Do not not allow allow to to to allow CAUTION CAUTION CAUTION run dry Never...

  • Page 16: 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 Remedy Remedy Problem Problem Problem Cause/result Cause/result Cause/result Motor overloaded Pumping of viscous liquids Larger motor or smaller impeller Pumping of high density liquids Low outlet pressure (counter...

  • Page 17: 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 Caustic danger!

  • Page 18: Maintenance

    (See chapter 7 Parts list and service kits). Ordering spare spare parts parts Ordering Ordering spare 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 19 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. Rubber seals seals Shaft...

  • Page 20: 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: 1. Remove stub shaft (7) as per section 4 of the Service manual. 2.

  • Page 21: 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 22 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 Counterhold with a screwdriver!
  • Page 23 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 Double Double Double mechanical mechanical mechanical shaft shaft shaft seal: seal: seal:...

  • Page 24: 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 25 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 26 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 9 9 9 Step Step A. LKH-5: Fit pump casing (29), clamps (55+55a), spring washers (56a) and screws (56). B.

  • Page 27: 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 shaft shaft seal:...
  • Page 28 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 29 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 A. LKH-5: Fit pump casing (29), clamps (55+55a), spring washers (56a) and screws (56). B.

  • Page 30: 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 31 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 7 7 7 Step Step 1. Lubricate O-ring (38) and fit it in impeller (37), if impeller screw is used.
  • Page 32 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 10 Step Step 1. Fit pump casing (29). 2. Tighten nuts (20) for back plate (25). A.

  • Page 33: 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 34 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 1. Fit impeller (27) on stub shaft (7). LKH-5 = 0.5 mm 2.

  • Page 35: 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 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 LKH-10 to -60 = 0.5 mm (0.02 inch) 1.

  • Page 37: 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 38: Relubrication Intervals

    6 Technical data It is important to observe the technical data during installation, operation and maintenance. Inform personnel about the technical data. 6.2 Relubrication intervals The table is for an internal bearing temperature of 100°C. An increase in temperature of 15°C (ambient or internal in bearings), will reduce the greasing interval and bearing lifetime by 50%.
  • Page 39 6 Technical data It is important to observe the technical data during installation, operation and maintenance. Inform personnel about the technical data. WEG IEC IEC Motors, Motors, IE3 Motors, Motor power power Motor Motor power LKH- - - 5 5 5 - - - 70 (kW) (kW) (kW)
  • Page 40 6 Technical data It is important to observe the technical data during installation, operation and maintenance. Inform personnel about the technical data. Table 1. 1. 1. Sterling Sterling Nema Nema motors motors Table Table Sterling Nema motors Type of of of service service Motor Motor RPM...

  • Page 41: Torque Specifications

    6 Technical data It is important to observe the technical data during installation, operation and maintenance. Inform personnel about the technical data. 6.3 Torque Specifications The table below specifies the tightening torques for the screws, bolts and nuts for this pump. Always use below torques if no other values are stated.

  • Page 42: 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 Sound pressure pressure level pressure level level (dBA) (dBA) (dBA) LKH-5...

  • Page 43: 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 Ftting of legs Fitting of back plate 0.75-1.1 kW Flushed shaft seal Single shaft seat...

  • Page 44: 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 46: Lkh - Product Wetted Parts

    7 Parts list and service kits The drawing shows the LKH pump, sanitary version. 7.3 LKH - Product wetted parts * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 47 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Washer Cap nut Washer Back plate O-ring �♦��∆▲ ������ Impeller Bolt Pump casing Impeller screw Impeller for impeller screw O-ring ♦�∆���...

  • Page 48: Lkh - Motor-Dependent Parts

    7 Parts list and service kits The drawing shows the LKH pump, sanitary version. 7.4 LKH - Motor-dependent parts * If inducer (57) is retrofitted. Pump inlet may have to be slightly ground.
  • Page 49 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Motor ABB Motor ABB Shroud Screw Screw Compression ring with thread Compression ring without thread Screw Washer Shaft incl. pin Connex pin Retaining ring Adaptor...

  • Page 50: Lkh - Shaft Seal

    7 Parts list and service kits The drawing shows the LKH pump, sanitary version. 7.5 LKH - Shaft seal...
  • Page 51 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Parts list list Parts Parts list Pos. Denomination Drive ring Stationary seal ring O-ring Spring Rotating seal ring O-ring Seal housing Seal housing Screw for seal housing Tube Fitting Lip seal...
  • Page 52 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Denomination EPDM Denomination Denomination EPDM EPDM � Service Service Service kit, kit, kit, SiC/SiC SiC/SiC SiC/SiC (LKH (LKH (LKH- - - 70) 70) ....................... 9611922643 9611922643 9611922644 9611922645...
  • Page 53 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Service Service Service kit kit kit for for flushed flushed shaft flushed shaft seal shaft seal C/SiC seal C/SiC C/SiC � Service Service Service kit, kit, kit, C/SiC C/SiC C/SiC (LKH...
  • Page 54 7 Parts list and service kits The drawing shows the LKH pump, sanitary version. Denomination EPDM Denomination Denomination EPDM EPDM Service Service Service kit kit kit for for double double double mechanical mechanical mechanical shaft shaft shaft seal seal SiC/SiC seal SiC/SiC SiC/SiC...
  • Page 58 © 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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Lkh-5Lkh-10Lkh-15Lkh-20Lkh-25Lkh-35 ... Show all

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