LKH Series - Service Manual
Contents
1. See the warning label Never run the pump with both the suction side and the pressure side blocked Q Free l i ji Correct outlet _ vr R1 8 BSP e a Bt A i max 100 C ep ei let Flushed shaft seal Pry Rar water 1 Connect the inlet of the flushing liquid cor rectly 2 Regulate the water and steam supply cor rectly 3 Observe the steam data Operation The pump is fitted with a waming label indicating correct throttling Burning danger Never touch the pump or the pipelines when pumping hot liquids or when ste rilizing i Do not run dry y a Correct CAUTION The shaft seal must not run dry Never throttle the inlet side O Throttling Control Reduce the capacity and the power consumption by means of Throttling the pressure side of the pump Reducing the impeller diameter Reducing the speed of the motor Alfa Laval 7 a L Operation Pay attention to possible faults 2 Fault finding NOTE Study the instructions carefully Study the maintenance instructions carefully before replacing worn parts See page 10 Problem Cause result Remedy Overloaded motor Pumping of viscous liquids Larger motor or smaller Pumping of liquids with high impeller density Lowoutlet pressure Higher counter pressure cou2. Always have the pump electrically con nected by authorized personnel see the motor instructions CAUTION We cannot be held responsible for incorrect installation Outlet gt Aad Correct i lt a Inlet J 1 oy e f i H 5 i j L po NS 5H Risk of damage Avoid stressing the pump Pay special attention to Vibrations Thermal expansion of the tubes Excessive welding Overloading of the pipelines Installation The large pump sizes are very heavy Alfa Laval therefore recommends the use of a lifting crane when handling the pump LL i I i N Utd Ensure that there is sufficient clearance around the pump min 0 5 m T Remember A seal rings IE H Pew A bends Correct B 1 Ensure that the pipelines are routed cor rectly 2 Ensure that the connections are tight Alfa Laval 7 a L Installation Study the instructions carefully and pay special Check the direction of rotation of the impeller before attention to the wamings operation LKH 5 to 60 is without impeller screw as standard See the indication label on the pump but can be supplied with one 3 Pre use check Pump without impeller screw See the indication label Always r
3. Parts for double mechanical shaft seal a ae ales Click here to Order Parts The drawing and the parts list include all items of the pump Parts list The items are identical with the items in the Spare Parts List When ordering spare parts please use the Spare Parts List Pos Qty Denomination 1 1 Motor 2 1 Shroud 2a 1 Edge list 3 4 Screw 5a 1 Compression ring with thread 5b 1 Compression ring without thread 6 6 Screw 6a 6 Washer 7 1 Shaft 8 1 Connex pin Ji 9 1 Retaining ring q 10 1 Drive ring 11 1 Stationary seal ring 12 1 O ring 13 1 Spring 14 1 Rotating seal ring a 2 Rotating seal ring e 15 1 O ring 2 O ring e 16 1 Adaptor 17 4 Screw for adaptor 18 4 Nut for adaptor 19 4 Washer for adaptor 20 2 Nut 21 2 Washer 22 1 Safety guard A 23 1 Screw for safety guard lt 24 6 Cap nut 24a 6 Washer 25 1 Back plate 26A 1 O ring PI 27 1 Impeller 28 6 Stud bolt 29 1 Pump casing 30a 1 Support bar right 30b 1 Support bar left 31 4 Leg 32 4 Screw 33 4 Nut 34 4 Spring washer 35 4 Screw 35a 4 Washer 36 1 Impeller screw 37 1 Impeller for impeller screw 38 1 O ring 39 4 Nut 40 1 Seal housing a 40a 1 Seal housing e 41 2 Screw for seal housing ne 42 2 Tube ne 43A 1 Lip seal 44A 1 O ring for seal housing ne 45A 1 O ring for drive ring E 46 4 Distance sleeve 504 1 O ring e 51 1 Sec stationary seal ring e 52 1 Drive ring J 53 4 Centre screw 30 kW only TD 200 135 3
4. 2 Lubricate the impeller hub with silicone grease or oil Lubricate O ring 26 and slide it onto back plate 3 Screw impeller 27 onto stub shaft 7 25 4 Fit impeller screw 36 and tighten if used Maintenance Study the instructions carefully Lubricate the rubber seals before fitting them The items refer to the drawings and the parts list on Relates to the shaft seal the pages 24 29 6 Reassembly of pump double mechanical shaft seal 1 Screw tubes 42 into seal housing 40a 2 Tighten with a spanner Fit safety guard 22 and screw 23 and tighten 1 Fit pump casing 29 2 Tighten nuts 20 for back plate 25 3a LKH 5 Fit clamps 55 55a spring washers 56a and screws 56 and tighten 3b LKH 10 to 80 Fit washers 24a and cap nuts 24 and tighten Alfa Laval 7 a L Technical data It is important to observe the technical data during Inform the personnel about the technical data installation operation and maintenance 1 Technical data Data Max inlet pressure LKH 5 woe 600 kPa 6 bar LKH 10 to 80 000 2 1000 kPa 10 bar Temperature range secscccccriesesieniiiras 10 C to 140 C EPDM Noise leveling an 60 80 dB A Materials Product wetted steel parts 0 0 00 eee AISI 316L Other steel parts 0 ccccccceeeeeeeeeeteteetenees AISI 304 FINS ies andeaned icdenseGed lias ads Semi bright Product wetted seals occenecssniscriss
5. and screws 56 1b LKH 10 to 80 Fit pump casing 29 washers 24a and cap nuts 24 2 Adjust pump casing to the right position 3a LKH 5 Tighten nuts 20 for back plate 25 and tighten screws 56 3b LKH 10 to 80 Tighten nuts 20 for back plate 25 and tighten cap nuts 24 Alfa Laval 7 a L Maintenance Study the instructions carefully The items refer to the drawings and the parts list on the pages 24 29 Lubricate the rubber seals before fitting them Relates to the shaft seal 4 Reassembly of pump flushed shaft seal w Use 63 mm tube Flushed shaft seal 1 Fit lip seal 43 in seal housing 40 2 Lubricate O ring 44 and slide onto the seal housing 40 3 Fit the seal housing on back plate 25 and tighten screws 41 a Geman Fit complete shaft seal on stub shaft 7 so that connex pin 8 on the stub shaft enters the notch in drive ring 10 Lubricate O ring 26 and slide it onto back plate 25 1 Lubricate O ring 45 and fit it in drive ring 10 2 Fit spring 13 and rotating seal ring 14 on the drive ring CAUTION Make sure that the driver on the drive ring enters the notch in the rotating seal ring 1 Carefully guide back plate 25 onto adaptor 16 2 Fitwashers 21 and nuts 20 1 Lubricate O ring 38 and fit it in impeller 37 if impeller screw is used 2 Lubricate the impeller hub with silicon
6. em Fit the complete shaft seal on stub shaft 7 NOTE Make sure that connex pin 8 on the stub shaft enters the notch in drive ring 10 1 Clean the sealing surfaces with contact cleaner before fitting back plate 25 2 Carefully guide the back plate onto adaptor 16 3 Fitwashers 21 and nuts 20 1 Refit spring 13 on rotating seal ring 14 2 Fit the spring and the rotating seal ring on drive ring 10 CAUTION Ensure that the driver on the drive ring enters the notch in the rotating seal ring Use the tool supplied Left hand thread 1 Fit O ring 12 on stationary seal ring 11 and lubricate 2 Screw the stationary seal ring into back plate 25 CAUTION Only tighten by hand to avoid deforming the stationary seal ring Lubricate O ring 26 and slide it onto back plate 25 7 Maintenance Study the instructions carefully Lubricate the rubber seals before fitting them The items refer to the drawings and the parts list on the pages 24 29 3 Reassembly of pump single shaft seal 1 Lubricate O ring 38 and fit it in impeller 37 if impeller screw is used 2 Lubricate the impeller hub with silicone grease or oil 3 Screw the impeller onto stub shaft 7 4 Fit impeller screw 36 and tighten if used Fit safety guard 22 and screw 23 and tighten 1a LKH 5 Fit pump casing 29 clamps 55 55a spring washers 56a
7. 1 Impeller screw 37 1 Impeller for impeller screw 38 1 O ring 39 4 Nut 40 1 Seal housing 40a 1 Seal housing 41 2 Screw for seal housing 42 2 Tube 434 1 Lip seal 44A 1 O ring for seal housing 45A 1 O ring for drive ring 504 1 O ring 51 1 Sec stationary seal ring 52 1 Drive ring 55 1 Upper clamp 55a 1 Lower clamp 56 2 Screw 2 Spring washer The items are identical with the items in the Spare Parts List When ordering spare parts please use the Spare Parts List The drawing shows LKH sanitary version A Service kit EPDM NBR FPM FEP see spare parts list m Flushed shaft seal Double mechanical shaft seal Only used for 0 75 and 1 1 kW Fitting of legs Drawing Parts list The items refer to the parts list on the opposite part of the page LKH 5 Sanitary version Double mechanical shaft seal NES f Ds Sa a y S Impeller screw L7 Fitting of back plate Alfa Laval 7 FN L Exploded drawing This page shows an exploded drawing of LKH sani The drawing includes all items of the pump tary version They are identical with the items in the Spare Parts List LKH 10 15 20 25 35 40 45 50 60 Sanitary version
8. Rotating seal ring 15 1 O ring 16 1 Adaptor 17 4 Screw for adaptor 18 4 Nut for adaptor 19 4 Washer for adaptor 20 4 Nut 21 4 Washer 22 1 Safety guard 23 1 Screw for safety guard 24 8 Cap nut 24a 8 Washer 25 1 Back plate 26A 1 O ring 28 8 Stud bolt 29 1 Pump casing 30a 1 Support bar right 30b 1 Support bar left 31 4 Leg 32 4 Screw 33 4 Nut 34 4 Spring washer 35 4 Screw 35a 4 Washer 36 1 Impeller nut 37 1 Impeller 38 1 O ring 40 1 Seal housing E 41 2 Screw for seal housing E 42 2 Tube m 434 1 Lip seal E 44A 1 O ring for seal housing a 45A 1 O ring for drive ring a 46 4 Distance sleeve 47 2 Leg bracket 48 4 Nut for leg bracket 49 4 Screw for leg 53 4 Centre screw 30 45 kW A Service kit EPDM NBR FPM see spare parts list m Flushed shaft seal Drawing Parts list The items are identical with the items in the Spare The drawing shows LKH sanitary version The items refer to the parts list on the opposite part Parts List of the page When ordering spare parts please use the Spare Parts List LKH 70 80 Sanitary version Fitting of back plate SS Nn Nr Flushed shaft seal Q Fitting of legs 55 75 kW Alfa Laval 7 FN L
9. carefully and pay special attention to the warnings NaOH Caustic Soda HNO Nitric acid O i RS G e os I er Burning danger oo E 7 im Never touch the pump or the pipelines when sterilizing 1 Avoid excessive concentration of the cleaning agent Dose gradually 2 Adjust the cleaning flow to the process Sterilization of milk viscous liquids gt Increase the cleaning flow Q NOTE The cleaning agents must be stored disposed of in accordance with current rules directives Alfa Laval 7 a L Maintenance Maintain the pump carefully Study the instructions carefully and pay special attention to the wamings 1 General maintenance Always read the technical data thoroughly see page 22 Always disconnect the power supply when servicing the pump NOTE All scrap must be stored disposed of in accordance with currentrules directives Atmospheric pres sure required GED J Never service the pump with pump and pipelines under pressure Ordering spare parts Contact the Sales Department Order from the Spare Parts List Always keep spare shaft seals and rubber seals in Stock See separate motor instructions z a ERB i i a all 4 i f f Burning U 7 danger ae i B AN Never service the pump when it is hot CAUTION Fit the electrical connections correctly if
10. they have been removed from the motor during service see pre use check on page 6 Pay special attention to the warnings Recommended spare parts Service kits see Spare Parts List Maintain the pump carefully Study the instructions carefully Always keep spare shaft seals and rubber seals in Stock 1 General maintenance Preventive maintenance Shaft seal Replace after 12 months one shift Complete shaft seal Maintenance See separate motor instructions Check the pump for smooth operation after service Rubber seals Replace when replacing the shaft seal Motor bearings Maintenance after lea kage leakage normally starts slowly Replace at the end of the day Complete shaft seal Replace when replacing the shaft seal Planned maintenance Lubrication Pre use check CAUTION Regular inspection for leakage and smooth operation Keep arecord of the pump Use the statistics for planning of inspections Replace after leakage Complete shaft seal Before fitting Lubricate the O rings with silicone grease or silicone oil Fit the electrical connections correctly if they have been removed from the motor during service See pre use check on page 6 Pay special attention to the warnings 1 Start and stop the motor momentarily 2 Ensure that the pump operates smoothly Lubrication motor bearings Motors without grease nipples are permanently lubricate
11. 0 0 37 0 45 0 55 0 75 0 Motor sizes kW 60 HZ ee 0 9 1 3 1 75 2 5 3 5 4 6 6 3 8 6 12 5 17 0 21 0 25 0 35 0 43 0 52 0 63 0 86 0 Max weight for LKH pumps 0 eeeeee LKH 5 33 kg LKH 10 57 kg LKH 15 79 kg LKH 20 77 kg LKH 25 134 kg LKH 35 134 kg LKH 40 174 kg LKH 45 136 kg LKH 50 174 kg LKH 60 327 kg LKH 70 570 kg LKH 80 581kg For further information see PD sheet eae ey 7 Exploded drawing This page shows an exploded drawing of LKH The drawing includes all items of the pump sanitary version They are identical with the items in the Spare Parts List LKH 5 Sanitary version Parts for double mechanical shaft seal Parts for flushed shaft seal 42 Click here to Order Parts The drawing and the parts list include all items of the pump Parts list Pos Qty Denomination 1 1 Motor 2 1 Shroud 2a 1 Edge list 3 4 Screw 4 2 Screw 7 1 Shaft 8 1 Connex pin 10 1 Drive ring 11 1 Stationary seal ring 12 1 O ring 13 1 Spring 14 1 Rotating seal ring 2 Rotating seal ring 15 1 O ring 2 O ring 16 1 Adaptor 17 4 Screw for adaptor 18 4 Nut for adaptor 19 4 Washer for adaptor 20 2 Nut 21 2 Washer 22 1 Safety guard 23 1 Screw for safety guard 25 1 Back plate 264 1 O ring 27 1 Impeller 29 1 Pump casing 30a 1 Support bar right 30b 1 Support bar left 31 4 Leg 32 4 Screw 33 4 Nut 34 4 Spring washer 35 4 Screw 35a 4 Washer 36
12. IM70737 GB7 Operating Manual LKH Centrifugal Pump Alfa Laval Declaration of Conformity The designating company Alfa Laval Company Name 6000 Kolding Address 45 79 32 22 00 Phone No hereby declare that CENTRIFUGAL PUMP LKH Denomination Type Year is in conformity with the following directives with amendments Low Voltage Directive 73 23 EEC EMC Directive 89 336 EEC Machinery Directive 89 392 EEC Bjarne Sondergaard Vice President R amp D Name Title Alfa Laval E Company Signature Designation Alfa Laval 7 FN This manual is divided into main sections See below Safety Installation Operation Maintenance Technical data Drawings Parts list Information Table of contents Please note that the drawings on pages 25 27 and 29 can be unfolded and support the reading of the manual 1 Importantinformation 000 c ee 2 2 Warning SIGNS e er 2 3 Safety precautions 00 0 cee 3 1 Unpacking Delivery 0 0 eee 4 2 Installation ee eeeceeeeeeeeeteeeeeeenenees 5 3 Preusecheck ocara 6 1 Operation Control 000 cece 7 2 Fault finding 0 cc ccccccceeesseeeeeeentees 8 3 Recommendedcleaning ccee 9 1 General maintenance 0 0 ee 10 2 Dismantling of pump shaft seals 12 3 Reassembly of pump single shaft seal 14 4 Reassembl
13. The drawing shows LKH sanitary version LKH 10 15 20 25 35 Service kit EPDM NBR FPM FEP see spare parts list Flushed shaft seal Double mechanical shaft seal Only used for 5 5 30 kW Only used for 3 kW Fitting of legs Drawing Parts list The items refer to the parts list on the opposite part of the page 40 45 50 60 Sanitary version fo II HUU Fitting of back plate 27 Alfa Laval 7 FN L Exploded drawing This page shows an exploded drawing of LKH sani tary version LKH 70 80 Sanitary version The drawing includes all items of the pump They are identical with the items in the Spare Parts List Parts for flushed shaft seal Click here to Order Parts The drawing and the parts list include all items of the pump Parts list Pos Qty Denomination 1 1 Motor 2 1 Shroud 2a 1 Edge list 3 4 Screw 5a 1 Compression ring with thread 5b 1 Compression ring without thread 6 6 Screw 6a 6 Washer 7 1 Shaft 8 1 Connex pin 10 1 Drive ring 11 1 Stationary seal ring 12 1 O ring 13 1 Spring 14 1
14. arence between impeller and backplate this 1 Remove impeller 27 back plate 25 and additional clearence must be taken into account drive ring 52 4 when adjusting the shaft 2 Tighten screws 6 evenly to 15 Nm lt Maintenance Study the instructions carefully Lubricate the rubber seals before fitting them The items refer to the drawings and the parts list on Relates to the shaft seal the pages 24 29 6 Reassembly of pump double mechanical shaft seal Q O 1 Fit O rings 15 in rotating seal rings 14 2 Fit spring 13 on one of the rotating seal rings 14 and place the drive ring 52 in between 3 Fit the second rotating seal ring 14 on the other end of the spring NOTE Ensure that both drive pins on the drive ring 1 Lubricate O ring 44 and slide onto seal enters the notches in rotating seal rings housing 40a 4 Placethe parts onthestationarysealringfitted 2 Lubricate O ring 50 and fit on stationary in back plate 25 seal ring 51 and fit this in the seal housing i 1 To enable fitting back plate 25 with the shaft seal remove connex pin 8 from stub shaft 7 if fitted 1 Cleanthesealingsurfaceswithcontactcleaner 2 Carefully guide the back plate onto adaptor 2 Fit seal housing 40a on the back plate 25 16 and tighten screws 41 3 Fitwashers 21 and nuts 20 1 Lubricate O ring 38 and fit it in impeller 37 if impeller screw is used
15. d Pull off the O ring 26 from back plate 25 Unscrew nuts 20 and remove washers 1 Remove the stationary seal ring 11 21 and the back plate 2 Remove the O ring 12 from back plate 25 N 7 Maintenance Study the instructions carefully Handle scrap correctly The items refer to the drawings and the parts list on Relates to the shaft seal the pages 24 29 2 Dismantling of pump shaft seals Double mechanical shaft seal 1 Remove screws 41 and seal housing 40a Flushed shaft seal 2 Remove rotating seal rings 14 and drive 1 Remove screws 41 and seal housing 40 ring 52 from spring 13 2 Pullout lip seal 43 from the seal housing 3 Remove O rings 15 from rotating seal rings 14 O i z N Double mechanical shaft seal 1 Remove stationary seal ring 51 from seal housing 40a 1 Remove the complete shaft seal from stub 2 Remove O ring 50 from stationary seal ring shaft 7 51 2 Remove spring 13 and rotating seal ring 3 Remove O ring 44 from seal housing 40a 14 from the drive ring 10 Alfa Laval 7 a L Maintenance Study the instructions carefully The items refer to the drawings and the parts list on the pages 24 29 Handle scrap correctly Relates to the shaft seal 3 Reassembly of pump single shaft seal Q Remove spring 13 NOTE Make sure that O ring 15 has max clearance from the sealing surface
16. d and do therefore not need any lubrication Replace when replacing the shaft seal Before fitting Silicone grease or sili cone oil Yearly inspection is recommended Replace complete bearing ifworn Ensure that the bearing is axially locked See motor instructions See below Lubrication intervals for motors with grease nipples are shown on the information plate on the motor The lubrication intervals are based upon 80 C bearing temperature The values should be halved for every 15 C increase in the bearing temperature Note Motors with grease nipples should be lubricated before operating the first time Alfa Laval 7 a L Maintenance Study the instructions carefully Handle scrap correctly The items refer to the drawings and the parts list on Relates to the shaft seal the pages 24 29 2 Dismantling of pump shaft seals 1a LKH 5 Remove screws 56 spring washers 56a clamps 55 55a and pump casing 29 1b LKH 10 to 80 Unscrew cap nuts 24 and remove washers 24a and pump casing 29 Flushed Double mechanical shaft seal Unscrew tubes 42 using a spanner Counterhold with a screwdriver If necessary 1 Remove impeller screw 36 if fitted 2 Remove impeller 27 If necessary loosen the impeller by knocking gently on the impeller vanes 3 Remove the O ring 38 from the impeller if fitted 6 Use the tool supplied Left hand threa
17. e grease or oil 3 Screwimpeller 27 onto stub shaft 7 4 Fitimpeller screw 36 and tighten if used Maintenance Study the instructions carefully Lubricate the rubber seals before fitting them The items refer to the drawings and the parts list on Relates to the shaft seal the pages 24 29 4 Reassembly of pump flushed shaft seal 1 Screw tubes 42 into seal housing 40 2 Tighten with a spanner 1a LKH 5 Fit pump casing 29 clamps 55 55a spring washers 56a and screws 56 1b LKH 10 to 80 Fit pump casing 29 2 Tighten nuts 20 for back plate 25 3a LKH 5 Tighten nuts 20 for back plate 25 and tighten screws 56 3b LKH 10 to 80 Fit washers 24a and cap nuts 24 and tighten Fit safety guard 22 and screw 23 and tighten 17 Alfa Laval 7 a L Maintenance Study the instructions carefully The items refer to the drawings and the parts list on the pages 24 29 5 Adjustment of shaft LKH 5 1 Loosen screws 4 2 Pull off stub shaft 7 1 2 Ensure that stub shaft 7 can be moved on the motor shaft 1 Fitimpeller 27 on stub shaft 7 Ensure that the clearance between the impeller and back plate 25 is correct 0 5 mm for LKH 5 Lubricate the rubber seals before fitting them Relates to the shaft seal 1 Push stub shaft 7 onto the motor shaft Screws 4 must fit in keyway on the motor shaft 2 Ch
18. eck that the clearance between the end of the stub shaft and the motor flange is 10 20 1 For double mechanical shaft seal Fit drive ring 52 on stub shaft 7 2 Fit back plate 25 washers 21 and nuts 20 and tighten 1 Remove impeller 27 back plate 25 and drive ring 52 2 Tighten screws 4 evenly to 18 Nm Maintenance Study the instructions carefully Lubricate the rubber seals before fitting them The items refer to the drawings and the parts list on Relates to the shaft seal the pages 24 29 5 Adjustment of shaft LKH 10 to 80 Push stub shaft 7 together with compres sion rings 5a 5b onto the motor shaft Loosen screws 6 2 Check that the clearance between the end of Pull off stub shaft 7 together with com the stub shaft and the motor flange is 10 20 pression rings 5a 5b Na 1 For double mechanical shaft seal 1 Tighten screws 6 lightly and evenly Fit drive ring 52 on stub shaft 7 2 Ensure that stub shaft 7 can be moved 2 Fit back plate 25 washers 21 and nuts on the motor shaft 20 and tighten a screwdriver Counterhold with j Sy LKH 10 60 0 5 mm LKH 70 80 1 0 mm 1 Fit impeller 27 on stub shaft 7 2 Ensure that the clearance between the im peller and back plate 25 is correct 0 5mm for LKH 10 60 and 1 0 mm for LKH 70 80 NOTE If pump has been ordered with increased Alfa Laval cle
19. emove the impeller before AN checking the direction of rotation Never start the pump if the impeller is fitted and the pump casing is removed Stub shaft 1a LKH 5 Remove screws 56 spring washers 56a clamps 55 55a and pump casing 29 1b LKH 10 to 80 Remove cap nuts 24 1 Start and stop the motor momentarily washers 24a and pump casing 29 2 Ensure thatthe direction of rotation of the 2 Remove impeller 27 see also instruction stub shaft 7 is anticlockwise as viewed 4 on page 12 from the inlet side 1 Fit pump casing 29 2a LKH 5 Fit clamps 55 55a spring washers 56a and tighten screws 56 2b LKH 10 to 80 Fit washers 24a and tighten Fit and tighten impeller 27 cap nuts 24 3 Pre use check Pump with impeller screw Da y _ Correct Never start in the wrong direction of va rotation with liquid in the pump Me ee See the indication Zz ry gt E label 1 Start and stop the motor momentarily es a 2 Ensure that the direction of rotation of the View from H motor fan is clockwise as viewed from the rear end of a the motor rear end of the motor Study the instructions carefully and pay special attention to the warnings 1 Operation Control Always read the technical data thoroughly see page 22 CAUTION We cannot be held responsible for incorrect operation control Explosion danger
20. hnical data CAUTION We cannot be held responsible for incorrect unpacking Check the delivery for 1 Complete pump 2 Deliverynote 3 Motor instructions 4 Test certificate IF ORDERED Inspection a 1 TH P A q j a p Ww Avoid damaging the connections for flushing liquid if supplied Caution The large pump sizes are very heavy Alfa Laval therefore recommends the use of a lifting crane when handling the pump Remove packing materials li a g J l N B7 Same e ele g ai a ae T o f Hl 1 Remove possible packing materials from the inlet Caution and the outlet 4 Le f q a coo A Avoid damaging the inlet and the outlet Q Remove the shroud before lifting poa ee g el i F Always remove the shroud if fitted before lifting the pump Study the instructions carefully and pay special attention to the wamings Always check the pump before operation See pre use check on page 6 2 Installation A Always read the technical data thoroughly see page 22 Always use a lifting crane when handling the pump see technical data
21. nal injury and or damage to the pump are avoided Always read the technical data thoroughly see page 22 Always use a lifting crane when handling the pump Always have the pump electrically connected by authorized personnel see the motor instructions Pump without impeller screw Always remove the impeller before checking the direction of rotation Never start the pump if the impeller is fitted and the pump casing is removed Pump with impeller screw Never start in the wrong direction of rotation with liquid in the pump Always read the technical data thoroughly see page 22 Never touch the pump or the pipelines when pumping hot liquids or when sterilizing Never run the pump with both the suction side and the pressure side blocked Always handle lye and acid with great care Always read the technical data thoroughly see page 22 Always disconnect the power supply when servicing the pump Never service the pump when it is hot Never service the pump with pump and pipe lines under pressure Motors with grease nipples Remember lubrication according to information plate label on the motor Alfa Laval 7 a L Installation The instruction manual is part of the delivery Study the instructions carefully The standard delivery does not include the test certificate This can be supplied on request 1 Unpacking Delivery Always use a lifting crane when handling the pump see tec
22. nter pressure throttling Lamination of precipitates Frequentcleaning from the liquid Cavitation Damage Lowinlet pressure Increase the inlet pressure Pressure reduction High liquid temperature Reduce the liquid temperature sometimes to zero Reduce the pressure drop Increasing of the noise level before the pump Reduce speed Leaking shaft seal Replace Dry run See page 7 Incorrectrubber grade Abrasive particles in the liquid All wearing parts See page 10 If necessary Selecta different rubber grade Select stationary and rotating seal ring in Silicon Carbide Silicon Carbide Leaking seals Incorrect rubber grade Replace with seals of a different rubber grade The pump is designed for cleaning in place CIP CIP Cleaning In Place 3 Recommended cleaning Caustic danger Always use rubber gloves Always use protective goggles AN Always handle lye and acid with great care Examples of cleaning agents Use clean water free from chlorides 1 1 by weight NaOH at 70 C 1kg 100 NaOH water 2 2 100 33 NaOH water 2 0 5 by weight HNO at 70 C 0 71 100 53 HNO water Q Always rinse AANI Water Cleaning agent Always rinse well with clean water after the cleaning Cleaning agent Cleaning agent Cleaning agent Operation Study the instructions
23. smensi EPDM standard Other O ringS sores ennas E EPDM Alternative Seals 0 0 2 cccceeceeeeeeteereeeeeeteeeeeees Nitrile NBR Fluorinated rubber FPM and FEP Shaft seal Seal types aesiieeeieeeiie eeir esee esetre trernererssrrnena External single flushed or double mechanical seal Double mechanical seal NOT valid for LKH 70 80 Max water pressure flushed seal 5 Normally atmospheric max 1 bar Water consumption flushed seal 0 0 25 0 5 I min Max water pressure double mechanical seal Normally atmospheric max 10 bar Water consumption double mechanical seal 0 25 0 5 I min Material stationary seal ring eeeeeee Acid resistent steel with sealing surface of Silicon Carbide Material rotating seal ring eee Carbon standard or Silicon Carbide Material O riINGS s es EPDM standard Alternative material O rings ceeee Nitrile NBR Fluorinated rubber FPM and FEP Motor Foot flanged motor acc to IEC metric standard 2 poles 3000 3600 rpm at 50 60 Hz IP55 drain hole with labyrinth plug insulation class F Voltage and frequency standard 0008 3 50 Hz 220 240VA 380 420VY lt 4kW 3 60 Hz 250 280VA 440 480VY lt 4 6 kW 3 50 Hz 380 420VA 660 690VY gt 5 5 kW 3 60 Hz 440 480VA 2 6 3 kW Motor sizes kW 50 HZ oo ee 0 75 1 1 1 5 2 2 3 0 4 0 5 5 7 5 11 0 15 0 18 5 22 0 3
24. y of pump flushed shaft seal 16 5 Adjustment of shaft 0 0 eee 18 6 Reassembly of pump double mechanical shaft seal 0 00 20 1 Technicaldata eeeeeetees 22 1 Exploded drawing LKH 5 06 24 2 Drawing Parts list LKH 5 0000 25 3 Exploded drawing LKH 10 60 26 4 Drawing Parts list LKH 10 60 27 5 Exploded drawing LKH 70 80 28 6 Drawing Parts list LKH 70 80 29 We Noles irea 30 2 Userfeedback 00 cceeeceesteteeeeeeees 30 Alfa Laval 7 a L Safety Unsafe practices and other important information are Wamings are emphasized by means of special signs emphasized in this manual 1 Important information Always read the manual before using the pump WARNING Indicates that special procedures must be followed to avoid severe personal injury CAUTION Indicates that special procedures must be followed to avoid damage to the pump NOTE Indicates important information to simplify practices or to make them clearer 2 Warning signs General warning Dangerous electrical voltage Caustic agents gt gt D All wamings in the manual are summarized on this page 3 Safety precautions Installation gt e EE Operation gt gt eD Maintenance gt eD Safety Pay special attention to the instructions below so that severe perso
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