Alfa Laval AFPX 517XGV-14CG Manual
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Alfa Laval AFPX 517XGV-14CG Manual

Alfa Laval AFPX 517XGV-14CG Manual

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Summary of Contents for Alfa Laval AFPX 517XGV-14CG

  • Page 1 > 27AI&"(I8G"%48 DVaRcRe`c>R_fR] ?a^SdRc=^ '# 1^^Z=^ !& '(!E!
  • Page 2 Telephone: +46 8 53 06 50 00 Telefax: +46 8 53 03 10 40 Printed in Sweden, 99-01 © Alfa Laval Separation AB 1999 This publication or any part thereof may not be reproduced or transmitted by any process or means without prior written permission of...

  • Page 3: Table Of Contents

    Contents Safety Instructions Separator Basics 2.1 Basic principles of separation 2.2 Mechanical function 2.3 Separating function 2.4 Sediment discharge function 2.5 Factors influencing the separating result 2.6 Interval between sediment ejections 2.7 Bowl cleaning (washing) 2.8 Definitions Operating Instructions 3.1 Operating routine Maintenance Directions 4.1 Periodic maintenance 4.2 Maintenance Logs...
  • Page 4 Dismantling – Assembly 5.1 Introduction 5.2 Machine top part 5.3 Inlet / Outlet 5.4 Separator bowl 5.5 Paring disc device for operating water 5.6 Operating water module (OWM) 5.7 Frame parts 5.8 Vertical driving device 5.9 Horizontal driving device 5.10 Remote controlled brake (pneumatic) 5.11 Worm wheel guard (with revolution counter) 5.12 Parts for mounting of motor and...
  • Page 5 Study instruction manuals and observe the warnings before installation, operation, service and maintenance. Not following the instructions can result in serious accidents. In order to make the information clear only foreseeable conditions have been considered. No warnings are given, therefore, for situations arising from the unintended usage of the machine and its tools.

  • Page 7: Safety Instructions

    Strictly follow the instructions for installation, operation and maintenance. • Ensure that personnel are competent and have sufficient knowledge of maintenance and operation, especially concerning emergency stopping procedures. • Use only Alfa Laval genuine spare parts and the special tools supplied.
  • Page 8 1 Safety Instructions DANGER Disintegration hazards • Use the separator only for the purpose and parameter range specified by Alfa Laval. • If excessive vibration occurs, stop separator and keep bowl filled with liquid during rundown. • When power cables are connected, always check direction of motor rotation.
  • Page 9 1 Safety Instructions DANGER Entrapment hazards • Make sure that rotating parts have come to a complete standstill before starting any dismantling work. • To avoid accidental start, switch off and lock power supply before starting any dismantling work. • Assemble the machine completely before start.
  • Page 10 1 Safety Instructions CAUTION Burn hazards • Lubrication oil and various machine surfaces can be hot and cause burns. Cut hazards • Sharp edges on separator discs and lock ring threads can cause cuts.
  • Page 11 1 Safety Instructions Warning signs in the text Pay attention to the safety instructions in this manual. Below are definitions of the three grades of warning signs used in the text where there is a risk for injury to personnel. DANGER Type of hazard This type of safety instruction indicates a...
  • Page 12 1 Safety Instructions...

  • Page 13: Separator Basics

    2 Separator Basics Contents 2.1 Basic principles of separation 2.6 Interval between sediment ejections 2.1.1 Introduction 2.1.2 Separation by gravity 2.7 Bowl cleaning (washing) 2.1.3 Centrifugal separation 2.1.4 Separating temperatures 2.7.1 Introduction 2.7.2 Check on cleaning 2.2 Mechanical function 2.8 Definitions 2.2.1 Bowl 2.2.2...

  • Page 14: Basic Principles Of Separation

    2.1 Basic principles of separation 2 Separator Basics Basic principles of separation 2.1.1 Introduction The purpose of separation can be: • to free a liquid of solid particles, • to separate two mutually insoluble liquids with different densities while removing any solids presents at the same time, •...
  • Page 15 2 Separator Basics 2.1 Basic principles of separation 2.1.4 Separating temperatures Separating temperatures For some types of process liquids (e.g. mineral oils) a high separating temperature will normally increase the separation capacity. The temperature influences oil viscosity and density and should be kept constant throughout the separation.

  • Page 16: Mechanical Function

    2.2 Mechanical function 2 Separator Basics Mechanical function 2.2.1 Bowl Purifier bowl...
  • Page 17 2 Separator Basics 2.2 Mechanical function Lock ring, small 10. Cap nut (left-hand threaded) (left-hand threaded) 11. Distributing cone Paring chamber cover 12. Lining (erosion protection) Paring disc for heavy phase 13. Sliding bowl bottom* Gravity disc 14. Bowl body Lock ring, large 14a.
  • Page 18 2.2 Mechanical function 2 Separator Basics 2.2.2 Power transmission Electric motor (Note! Special motor with built-in Worm Worm gear thermistors, used for separators with flexible coupling) Worm wheel Flexible coupling Cooling coil for oil Worm wheel shaft bath Top bearing Cooling water inlet/ Bowl spindle outlet for coil...
  • Page 19 2 Separator Basics 2.2 Mechanical function The motor (1) rotates the bowl through the coupling (2) and the worm gear (6, 7). The worm gear serves to adept the bowl speed to the motor speed. The number of revolutions of the bowl is a few times higher than that of the motor.
  • Page 20 The thermistors must be connected to a special tripping device in the starter. These motors have been designed by Alfa Laval as “Control-torque motors” - abbreviated to CT motors . The overload protection (e.g. in the form of bimetal relays) in the starter must be connected into the D circuit.

  • Page 21: Separating Function

    2 Separator Basics 2.3 Separating function Separating function 2.3.1 Normal separation Centrifugal force Bowl parts Process liquid Diameter of inner outlet Heavy liquid phase Diameter of outer outlet (same as inner diameter of gravity disc) Light liquid phase Diameter of interface Sediment (solids)
  • Page 22 2.3 Separating function 2 Separator Basics Purificator bowl (two liquid outlets) Unseparated liquid is fed into the bowl through the inlet pipe and is forced via the distributor towards the periphery of the bowl. When the liquid reaches slots in the base of the distributor, it will rise through the channels formed by the disc stack where it is evenly distributed and divided among the interspaces between the bowl...

  • Page 23: Sediment Discharge Function

    2 Separator Basics 2.3 Sediment discharge function Setting the interface The purificator bowl is adjusted for separating liquid mixtures of varying density by altering the diameter of the heavy phase outlet (D ). A number of gravity discs for this purpose are included in the machine delivery.
  • Page 24 2.3 Sediment discharge function 2 Separator Basics 2.4.2 Operating water system Bowl OWM (Operating water module) Sliding bowl bottom 13. Piston Operating slide 14. Operating water chamber Sediment ports 15. Check valve Seal ring 16. Pressure chamber Sediment space 17. Inlet for operating water Valve plugs 18.
  • Page 25 2 Separator Basics 2.3 Sediment discharge function The sediment discharge takes place through a number of ports (3) in the bowl wall. Between discharges these ports are closed by the sliding bowl bottom (1), which constitutes an internal bottom in the separating space. The sliding bowl bottom is held against a seal ring (4) by the water acting on its underside.

  • Page 26: Factors Influencing The Separating Result

    2.5 Factors influencing the separating result 2 Separator Basics Factors influencing the separating result 2.5.1 Viscosity and density See ‘‘2.1.4 Separating temperatures” on page 13. 2.5.2 Size and shape of particles The round and smooth particles (A) is more easily m³/h separated out than the irregular one (B).
  • Page 27 2 Separator Basics 2.5 Factors influencing the separating result 2.5.6 Disc stack A neglected disc stack - containing deformed discs or discs coated with deposits - will impair the separating result. 2.5.7 Back pressure regulation Be careful not to select too high a back pressure when setting it, as otherwise there will be a risk of leakage from the distributor (unseparated process liquid) into the paring chamber (separated liquid)

  • Page 28: Interval Between Sediment Ejections

    2.6 Interval between sediment ejections 2 Separator Basics Interval between sediment ejections If the solids content of the process liquid expressed in percent by volume of wet sediment is known or can be established (for instance in a test- tube centrifuge), the formula below can serve as a guidance for the selection of sediment ejection intervals.

  • Page 29: Bowl Cleaning (Washing)

    2 Separator Basics 2.7 Bowl cleaning (washing) Bowl cleaning (washing) 2.7.1 Introduction The bowl need not be dismantled after every run. It can be adequately cleaned by rinsing or circulation washing before being stopped. In some cases it will do to shut off the process liquid feed, supply a rinsing liquid, e.g.

  • Page 30: Definitions

    2.8 Definitions 2 Separator Basics Definitions Back pressure Pressure in the separator outlet. Concentration Liquid/liquid/solids separation with the intention of separating two intermixed and mutually insoluble liquid phases of different densities. Solids having a higher density than the liquids can be removed at the same time.

  • Page 31: Operating Instructions

    3 Operating Instructions Contents 3.1 Operating routine 3.1.1 Before first start 3.1.2 Selection of gravity disc 3.1.3 Ready for start 3.1.4 Start 3.1.5 Running 3.1.6 Normal stop 3.1.7 Emergency stop...

  • Page 32: Operating Routine

    3.1 Operating routine 3 Operating Instructions Operating routine These operating instructions are related only to the separator itself. If the separator is a part of a system or module follow also the instructions for the system. 3.1.1 Before first start Technical demands for connections and logical limitations for the separator is described in the chapter ‘‘7 Technical Reference”...

  • Page 33: Selection Of Gravity Disc

    3 Operating Instructions 3.1 Operating routine 3.1.2 Selection of gravity disc The separator is delivered with a set of gravity discs. How to replace a gravity disc is described in ‘‘5.4 Separator bowl” on page 90. The diameter of a gravity disc sets the position of the interface between heavy and light phases in the separator.

  • Page 34: Ready For Start

    3.1 Operating routine 3 Operating Instructions 3.1.3 Ready for start To achieve the best separation results the bowl should be in a clean condition. 1. Check that the screws for the frame hood are fully tightened. 2. Check that all inlet and outlet connections have been correctly made and properly tightened.

  • Page 35: Start

    3 Operating Instructions 3.1 Operating routine 3.1.4 Start 1. Start the separator. 2. Check the direction of rotation of the bowl. The revolution counter should turn clockwise. DANGER Disintegration hazards When power cables have been connected, always check direction of rotation. If Check for correct direction of rotation incorrect, vital rotating parts could unscrew.

  • Page 36: Running

    3.1 Operating routine 3 Operating Instructions 4. Check, if possible, the current consumption of the motor starter to ensure that the separator has reached full speed. During start, the current reaches a peak and then drops slowly to a low and stable level, which is the normal current during operation.

  • Page 37: Normal Stop

    3 Operating Instructions 3.1 Operating routine 3.1.6 Normal stop 1. Shut off the feed. 2. Carry out a sediment discharge before stopping the separator. Otherwise the bowl must be cleaned manually before the next start up. 3. Stop the separator with the bowl filled. 4.

  • Page 38: Emergency Stop

    Out-of-balance vibration can become worse if only part of the sediment is discharged. CAUTION Disintegration hazards After an emergency stop the cause of the fault must be identified. If all parts have been checked and the cause remains unclear, contact Alfa Laval for advice.

  • Page 39: Maintenance Directions

    4 Maintenance Directions Contents 4.1 Periodic maintenance 4.6 When changing oil 4.1.1 Introduction 4.6.1 Worm wheel and worm; wear of teeth 4.1.2 Maintenance intervals 4.6.2 Oil change procedure 4.1.3 Maintenance procedure 4.1.4 Service kits 4.7 Vibration 4.7.1 Vibration analysis 4.2 Maintenance Logs 4.2.1 Oil change 4.8 Common maintenance directions...

  • Page 40: Periodic Maintenance

    4.1 Periodic maintenance 4 Maintenance Directions Periodic maintenance 4.1.1 Introduction Periodic (preventive) maintenance reduces the risk of unexpected stoppages and breakdowns. Follow the maintenance logs on the following pages in order to facilitate the periodic maintenance. DANGER Disintegration hazards Separator parts that are either worn beyond their safe limits or incorrectly assembled may cause severe damage or fatal injury.
  • Page 41 4 Maintenance Directions 4.1 Periodic maintenance Intermediate Service (IS) Intermediate Service consists of an overhaul of the separator bowl, inlet/outlet and operating device every 3 months or 2000 operating hours. Seals in bowl and gaskets in inlet/outlet device are renewed. Major Service (MS) Major Service consists of an overhaul of the complete separator and includes an Intermediate...

  • Page 42: Service Kits

    Service and for servicing the frame feet NOTE Always use Alfa Laval genuine parts as otherwise the warranty will become invalid. Alfa Laval takes no responsibility for the safe operation of the equipment if non-genuine spare parts are used. DANGER...

  • Page 43: Maintenance Logs

    4 Maintenance Directions 4.2 Maintenance Logs Maintenance Logs 4.2.1 Oil change The oil change and check of worm gear should be carried out every 1000-1500 hours of operation. Note: In a new installation, or after replacement of gear, change the oil after 200 operating hours and clean the gear housing.

  • Page 44: Intermediate Service (Is)

    4.2 Maintenance Logs 4 Maintenance Directions 4.2.2 Intermediate Service (IS) Name of plant: Local identification: Separator: AFPX 517XGV-14CG Manufacture No./Year: Total running hours: Product No: 881118-04-01 Date: Signature: Main component and activity Part Notes Inlet and outlet Clean and inspect...

  • Page 45: 4.2 Maintenance Logs

    4 Maintenance Directions 4.2 Maintenance Logs Main component and activity Part Notes Operating liquid device Clean and check Operating liquid device Renew O-rings Horizontal driving device Worm wheel shaft and gear housing Check Worm wheel and worm Renew Oil in gear housing Electrical motor Check Electric cables...
  • Page 46 4.2 Maintenance Logs 4 Maintenance Directions 4.2.3 Major Service (MS) Name of plant: Local identification: Separator: AFPX 517XGV-14CG Manufacture No./Year: Total running hours: Product No: 881118-04-01 Date: Signature: Main component and activity Part Notes Inlet and outlet Clean and inspect...
  • Page 47 4 Maintenance Directions 4.2 Maintenance Logs Main component and activity Part Notes Operating liquid device Clean and check Operating liquid device Check Height position Renew O-rings Vertical driving device Clean and check Bowl spindle Check Radial wobble of bowl spindle Renew Spindle bearings, sealings and rubber buffers...
  • Page 48 4.2 Maintenance Logs 4 Maintenance Directions 4.2.4 3-year Service (3S) Renew the frame feet as described below. The 3-year service should be carried out in conjunction with a Major Service (MS). The extent of the 3-year service is the same as for a Major Service plus renewing the parts included in the 3-year service kit (3S).
  • Page 49 4 Maintenance Directions 4.2 Maintenance Logs 8. Tighten the set screws (9), first by hand (or by a hand tool, if necessary) until all of them are in contact with the frame feet (2). Then tighten the set screws with 100 Nm. NOTE Tighten the set screws before mounting the bowl or cyclone.

  • Page 50: Check Points At Intermediate Service (Is)

    Inspect frequently if the process liquid is Main bowl parts to check for corrosion corrosive. Always contact your Alfa Laval representative if you suspect that the largest depth of the corrosion damage exceeds 1,0 mm or if cracks have been found. Do not continue to use the separator until it has been inspected and given clearance for operation by Alfa Laval.
  • Page 51 4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) Stainless steel Stainless steel parts corrode when in contact with either chlorides or acidic solutions. Acidic solutions cause general corrosion. The chloride corrosion is characterised by local damage such as pitting, grooves or cracks. The risk of chloride corrosion is higher if the surface is: •...

  • Page 52: Erosion And Wear Liners

    Disintegration hazard Inspect regularly for erosion damage. Inspect frequently if the process liquid is erosive. Always contact your Alfa Laval representative if the largest depth of any erosion damage exceeds 1,0 mm. Valuable information as to the nature of the damage can be recorded using photographs, plaster impressions or hammered-in lead.
  • Page 53 4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) Look carefully for any signs of erosion damage. Erosion damage can deepen rapidly and consequently weaken parts by reducing the thickness of the metal. DANGER Disintegration hazard Erosion damage can weaken parts by reducing the thickness of the metal.
  • Page 54 4.3 Check points at Intermediate Service (IS) 4 Maintenance Directions 3. Tighten the tool nut with a spanner until the liner is firmly pressed to its seat. 4. Bend the shank (1) at right angles to the outside of the bowl wall using a drift. 5.

  • Page 55: Cracks

    4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) Wear liner in sliding bowl bottom If the erosion lining (1) is to be removed, remove it by using two screw drivers or similar, see the illustration. NOTE Normally the wear liner will be destroyed when removed.

  • Page 56: Lock Ring Joint

    It is particularly important to inspect for cracks in rotating parts and especially the pillars between the sludge ports in the bowl wall. Always contact your Alfa Laval representative if you suspect that the largest depth of the damage exceeds 1,0 mm. Do not continue to use the separator until it has been inspected and cleared for operation by Alfa Laval.
  • Page 57 4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) If damage has occurred due to seizure or other reasons, use the following to repair the damage: Very fine-cut file (single-cut) File type whetstone Combination whetstone (grain size: 240) (grain size: 120 / 400) Fibre brush (Ø...
  • Page 58 4.3 Check points at Intermediate Service (IS) 4 Maintenance Directions Accomplish the remedying by polishing the damaged spot with the fibre brushes and brush wax. It is recommended to polish the whole area where seizure damage might occur. The least possible material removed, however so much, that no residues of the damage are left above the original surface, which smoothly joints the remedied spot.

  • Page 59: Bowl Hood

    4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) 4.3.5 Bowl hood Poor sealing between the bowl hood seal ring and the sealing edge of the sliding bowl bottom will cause a leakage of process liquid from the bowl. Replace the bowl hood seal ring if it has fissures or pores, deep scratches or indentations made by course solid particles.

  • Page 60: Discharge Mechanism

    4.3 Check points at Intermediate Service (IS) 4 Maintenance Directions 4.3.7 Discharge mechanism Dirt and lime deposits in the discharge mechanism may cause bad discharging function or none at all. Nozzle...
  • Page 61 4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) Nozzles, ducts Clean all nozzles and ducts with a soft iron wire or the like. Remove deposits on other surfaces with steel wool. Height adjusting ring Control paring disc...
  • Page 62 4.3 Check points at Intermediate Service (IS) 4 Maintenance Directions Guiding surfaces etc. Examine the guiding surfaces (1) of spring support and operating slide respectively. Remove any marks with whetstone (grain size 240). Lubricate the surfaces with Molykote. Polish sealing surfaces (2) of operating slide and bowl body with steel wool.

  • Page 63: Bowl Body Nave - Bowl Spindle Cone

    4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) 4.3.8 Bowl body nave – Bowl spindle cone Impact marks and similar on the spindle cone and / or in the nave may cause bad bowl run. Clean spindle cone with a suitable defatting agent.

  • Page 64: Lubrication Points

    4.3 Check points at Intermediate Service (IS) 4 Maintenance Directions 4.3.9 Lubrication points Lock ring joint Degrease lock ring threads, contact and locating surfaces. Prime and lubricate the threads and surfaces stated according to any of the alternatives given in chapter ‘‘7.6 Lubricants” on page 180.

  • Page 65: Threads Of Large Lock Ring And Bowl Body

    4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) 4.3.10 Threads of large lock ring and bowl body • The purpose of the lock rings (A) is to keep the bowl hood (B) securely in position against the bowl body (C) during operation. No play is permissible here.
  • Page 66 65. − If the distance “L” exceeds 150 mm, the bowl must not be used! Get in touch with an Alfa Laval representative. DANGER Disintegration hazard Wear on large lock ring thread must not exceed safety limit. Ø-mark on lock ring must not pass opposite Ø-mark by more than the...

  • Page 67: 4.3.11 Disk Stack Pressure

    4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) 4.3.11 Disk stack pressure This check will ensure that the number of discs in the bowl is correct, so that two conditions have been fulfilled: • The disc stack pressure is sufficient. •...
  • Page 68 4.3 Check points at Intermediate Service (IS) 4 Maintenance Directions Fit the hydraulic disc compression tool. The valve on the tool should point upwards – “Unloaded position”. Use the handle to tighten the piston rod in the distributor. Set the valve on the tool into the left position. Pump until no resistance can be felt in the handle.
  • Page 69 4 Maintenance Directions 4.3 Check points at Intermediate Service (IS) Pressure checking The position of the Ø-marks are now according to chapter ‘‘4.3.10 Threads of large lock ring and bowl body” on page 63. a) The condition that the Ø-marks are exactly opposite each other has been fulfilled, or b) the condition that the Ø-mark is exactly opposite the felt-pen mark has been fulfilled.

  • Page 70: Lifting Instruction

    4.4 Lifting instruction 4 Maintenance Directions Lifting instruction 3 x 120° 3 slings Weight to lift = 850 kg Weight to lift = 1000 kg Max. 4 mm Remove in order stated: • Inlet / outlet • Frame hood • Cyclone •...

  • Page 71: Cleaning

    4 Maintenance Directions 4.4 Cleaning WARNING Crush hazard Use correct lifting tools and follow lifting instructions. Do not work under hanging load. Cleaning 4.5.1 External cleaning The external cleaning of the frame and motor should be restricted to brushing, sponging or wiping while the motor is running or is still hot.

  • Page 72: Cleaning Agents

    4.4 Cleaning 4 Maintenance Directions 4.5.2 Cleaning agents When using chemical cleaning agents, make sure you follow the general rules and suppliers’ recommendations regarding ventilation, protection of personnel, etc. For separator bowl, inlet and outlet A chemical cleaning agent must dissolve the deposits quickly without attacking the material of the separator parts.

  • Page 73: Cleaning Of Bowl Discs

    4 Maintenance Directions 4.4 Cleaning 4.5.3 Cleaning of bowl discs Handle the bowl discs carefully so as to avoid damage to the surfaces during cleaning. NOTE Mechanical cleaning is likely to scratch the disc surfaces causing deposits to form quicker and adhere more firmly. A gentle chemical cleaning is therefore preferable to mechanical cleaning.

  • Page 74: When Changing Oil

    4.6 When changing oil 4 Maintenance Directions When changing oil 4.6.1 Worm wheel and worm; wear of teeth To check at each oil change Check the teeth of both the worm wheel and worm for wear. Examine the contact surfaces and compare the tooth profiles with the ‘‘...
  • Page 75 4 Maintenance Directions 4.6 When changing oil Important! When using mineral-type oil in the worm gear housing, the presence of black deposits on the spindle parts is an indication that the oil base has deteriorated seriously or that some of the oil additives have precipitated.
  • Page 76 4.6 When changing oil 4 Maintenance Directions Tooth appearance examples Satisfactory teeth: Uniform wear of contact surfaces. Surfaces are smooth. Good contact surfaces will form on the teeth when the gear is subjected to only moderate load during its running-in period. Satisfactory teeth Worn teeth: Permissible wear is as a rule 1/3 of the thickness...

  • Page 77: Maintenance Procedure 40 4.6.2 Oil Change Procedure

    4 Maintenance Directions 4.6 When changing oil 4.6.2 Oil change procedure NOTE Before adding or renewing lubricating oil in the worm gear housing, the information concerning different oil groups, handling of oils, oil change intervals etc. given in chapter ‘‘7.6 Lubricants” on page 180 must be well known.

  • Page 78: Vibration

    4.7 Vibration 4 Maintenance Directions Vibration 4.7.1 Vibration analysis A separator normally vibrates and produces a different sound when passing through its critical speeds during run-up and run-down. It also vibrates and sounds to some extent when running. It is good practice to be acquainted with these normal conditions.

  • Page 79: Common Maintenance Directions

    The bearings used for the bowl spindle are special to withstand the speed, vibration, temperature and load characteristics of high- speed separators. Only Alfa Laval genuine spare parts should be used. Outer race Ball/roller A bearing that in appearance looks equivalent to...
  • Page 80 4.8 Common maintenance directions 4 Maintenance Directions Cleaning and inspection Check shaft (spindle) end and/or bearing seat in the housing for damage indicating that the bearing has rotated on the shaft (spindle) and/or in the housing respectively. Replace the damaged part, if the faults cannot be remedied by polishing or in some other way.
  • Page 81 4 Maintenance Directions 4.8 Common maintenance directions • There are several basic rules for assembling cylindrical bore bearings: − Never directly strike a bearing’s rings, cage or rolling elements while assembling. A ring may crack or metal fragments break off. −...

  • Page 82: 3-Year Service (3S) 46 4.8.2 Before Shut-Downs

    4.8 Common maintenance directions 4 Maintenance Directions 4.8.2 Before shut-downs Before the separator is shut-down for a period of time, the following must be carried out: • Remove the bowl, according to instructions in chapter ‘‘5 Dismantling – Assembly” on page NOTE The bowl must not be left on the spindle during standstill for more than one week.

  • Page 83: Dismantling - Assembly

    5 Dismantling – Assembly Contents 5.1 Introduction 5.7 Frame parts 5.1.1 General directions 5.1.2 Tools 5.8 Vertical driving device 5.1.3 Tightening of screws 5.8.1 Cut view 5.8.2 Exploded view 5.2 Machine top part 5.8.3 Dismantling 5.8.4 Assembly 5.3 Inlet / Outlet 5.9 Horizontal driving device 5.3.1 Cut view...

  • Page 84: Introduction

    5.1 Introduction 5 Dismantling – Assembly Introduction 5.1.1 General directions The separator must be dismantled regularly for cleaning and inspection. The recommended intervals are stated in chapter ‘‘4.1.2 Maintenance intervals” on page 38. DANGER Entrapment hazard Make sure that rotating parts have come to a complete standstill before starting any dismantling work.

  • Page 85: Tools

    5 Dismantling – Assembly 5.1 Introduction 5.1.2 Tools Special tools from the tool kit must be used for dismantling and assembly. The special tools are specified in the Spare Parts Catalogue and are shown as illustrations together with the dismantling/assembly instructions. 5.1.3 Tightening of screws When tightening screws, use the torques stated in...

  • Page 86: Machine Top Part

    5.2 Machine top part 5 Dismantling – Assembly Machine top part...
  • Page 87 5 Dismantling – Assembly 5.2 Machine top part To be tightened with 40 Nm Thread locked with Loctite 270...

  • Page 88: Inlet / Outlet

    5.3 Inlet / Outlet 5 Dismantling – Assembly Inlet / Outlet 5.3.1 Cut view...

  • Page 89: Dismantling

    5 Dismantling – Assembly 5.3 Inlet / Outlet 5.3.2 Dismantling Left-hand thread!

  • Page 90: Assembly

    5.3 Inlet / Outlet 5 Dismantling – Assembly 5.3.3 Assembly Height position If the bowl is replaced or the bowl spindle stripped, the height position must be checked. Any adjustment is made by means of one or more height adjusting rings. The tolerances are narrow, and it is important, therefore, that parts should be well cleaned and free of burrs.
  • Page 91 5 Dismantling – Assembly 5.3 Inlet / Outlet Left-hand thread!

  • Page 92: Separator Bowl

    5.4 Separator bowl 5 Dismantling – Assembly Separator bowl 5.4.1 Cut view...

  • Page 93: Dismantling

    5 Dismantling – Assembly 5.4 Separator bowl 5.4.2 Dismantling 1. Remove the frame hood. 2. Unscrew the small lock ring clockwise. Left-hand thread! 3. Dismantle the components according to the picture. Small lock ring Paring chamber top part Gasket Gravity disc Large lock ring Seal ring...
  • Page 94 5.4 Separator bowl 5 Dismantling – Assembly 4. Before unscrewing the large lock ring neutralize the disc stack pressure in following way: Compressing tool a. Carry out operations 1 – 3. Pump until full pressure is obtained, operation 4. b. Undo the lock ring by hammering (5). c.
  • Page 95 5 Dismantling – Assembly 5.4 Separator bowl d. Note! Take care not to damage the contact surface A. e. If necessary, press off the bowl hood with the tool (1 – 4). Note! The compressing tool is fitted before the lifting ring. 5.
  • Page 96 5.4 Separator bowl 5 Dismantling – Assembly 7. Lift up the distributor and disc stack. 8. If the discs are to be removed, use the special tool. CAUTION Cutting hazard Separator disc stack discs and lock ring threads have sharp edges and can cause cuts.
  • Page 97 5 Dismantling – Assembly 5.4 Separator bowl 11. Lift the sliding bowl bottom. The sliding bowl bottom edge (1) seals against the bowl hood. Check for erosion. 12. If the erosion lining should be renewed, remove it by using two screwdrivers or similar.
  • Page 98 5.4 Separator bowl 5 Dismantling – Assembly 15. Fit the lifting tool and push the bowl body free from the bowl spindle. 16. Lift up the bowl body. NOTE Handle the bowl body carefully. If it is roughly handled, the ejection mechanism may be damaged.
  • Page 99 5 Dismantling – Assembly 5.4 Separator bowl 18. Remove screws, spring holder and springs. Note! Remove the screws in the spring holder carefully and alternately. The springs are heavily compressed. Remove the operating slide. Use lifting eyes. Spring holder Operating slide Valve plug Lifting eye (M12) * Nozzle width over flats = 11 mm...

  • Page 100: Check Points

    5.4 Separator bowl 5 Dismantling – Assembly 5.4.3 Check points Exchange necessitates rebalancing – send the complete bowl to an Alfa Laval Check representative...
  • Page 101 5 Dismantling – Assembly 5.4 Separator bowl Lock ring, small Paring chamber Paring disc Lock ring, large Bowl hood Seal ring Disc stack Distributor Cap nut 10. Distributing cone 11. Erosion lining 12. Sliding bowl bottom 13. Bowl body 14. Nozzle x 3 15.

  • Page 102: Assembly

    5.4 Separator bowl 5 Dismantling – Assembly 5.4.4 Assembly 1. Knock in the new plugs with a rubber hammer so that the sealing surface is not damaged. 2. Screw together the bowl according to the picture. Tighten the spring holder screws alternately.
  • Page 103 5 Dismantling – Assembly 5.4 Separator bowl 3. Turn the bowl body. WARNING Crushing hazard Risk for jamming injury when turning the bowl body. 4. Clean spindle cone and nave bore in bowl body. Lubricate cone sparsely and wipe it with a clean cloth.
  • Page 104 5.4 Separator bowl 5 Dismantling – Assembly 8. Fitting of erosion (wear) liner in sliding bowl bottom – see special instruction – ‘‘4.3.2 Erosion and wear liners” on page 50. 9. Grease and fit the sealing ring. Erosion lining Sliding bowl bottom 10.
  • Page 105 5 Dismantling – Assembly 5.4 Separator bowl 13. Lower the distributor and disc stack. Check that the drill mark on the distributor sits in front of the guide key on the bowl body. Drill mark Guide key 14. Fit the top disc on top of the disc stack. Check that the guide pin is positioned in front of the guide key.
  • Page 106 5.4 Separator bowl 5 Dismantling – Assembly 16. Fit the bowl hood. The guide key in the bowl body should fit in the groove in the hood. 17. Compress the disc stack. Pump until full pressure is achieved. 18. Lift the lock ring by using eye bolts and a hoist and lower it gently onto the bowl body.
  • Page 107 5 Dismantling – Assembly 5.4 Separator bowl 20. The marks φ on lock ring and bowl should now be right in front of each other. Note! If marks Ø are not aligned and the distance between them does not exceed 20 –...
  • Page 108 5.4 Separator bowl 5 Dismantling – Assembly 23. Tighten the small lock ring. Left-hand thread! 24. Fit the frame hood.

  • Page 109: Paring Disc Device For Operating Water

    5 Dismantling – Assembly 5.5 Paring disc device for operating water Paring disc device for operating water 5.5.1 Views At assembly, lubricate the O- rings with grease of silicone type. Width over flats 19 mm...

  • Page 110: Dismantling

    5.5 Paring disc device for operating water 5 Dismantling – Assembly 5.5.2 Dismantling 1. Knock carefully on the control paring disc with a soft drift, so that the O-ring is unloaded. Remove the O-ring with a small screw driver, as shown in the picture. Remove the control paring disc by pulling the distributor ring.
  • Page 111 5 Dismantling – Assembly 5.5 Paring disc device for operating water 3. Lift off the distributor cover. Remove the height adjusting rings. Note the number. Height adjusting ring Ducts Clean all ducts with a soft iron wire or the like. Remove deposits on other surfaces with steel wool.

  • Page 112: Assembly

    5.5 Paring disc device for operating water 5 Dismantling – Assembly 5.5.3 Assembly 1. Replace the height adjusting rings, the same number as were removed. 2. Fit the distributor cover in correct position. Height adjusting ring 3. Fit the paring disc arrangement according to the picture.
  • Page 113 5 Dismantling – Assembly 5.5 Paring disc device for operating water Rechecking water flow: When the solenoid valve for make-up water is open, there should be weak water jets. At operation the make-up water consumption is zero when the water pressure is less than 50 kPa (0,5 bar).

  • Page 114: Operating Water Module (Owm)

    5.6 Operating water module (OWM) 5 Dismantling – Assembly Operating water module (OWM) 5.6.1 Exploded view Cylinder, upper 11. O-ring Distance pipe 12. Intermediate part, upper Tolerance ring 13. Clamp half Snap ring 14. Screw O-ring 15. Holder Piston 16. Washer Piston seal ring 17.

  • Page 115: Dismantling

    5 Dismantling – Assembly 5.6 Operating water module (OWM) 5.6.2 Dismantling If required, the OWM unit should be dismantled according to the procedure below: The figures within brackets refer to the exploded view on page 112. 1. Remove the connections for operating water, compressed air and electricity.

  • Page 116: Assembly

    5.6 Operating water module (OWM) 5 Dismantling – Assembly 5.6.4 Assembly 1. Fill the seal ring groove of the piston against the cylinder wall with silicone grease. 2. Lubricate the cylinder wall with silicone grease. 3. Lubricate all O-rings with silicone grease. 4.

  • Page 117: Frame Parts

    5 Dismantling – Assembly 5.7 Frame parts Frame parts...
  • Page 118 5.7 Frame parts 5 Dismantling – Assembly Oil gauge glass Gasket for brake protecting cover and worm wheel guard Oil drain plug Cooling coil Bearing shield...

  • Page 119: Vertical Driving Device

    5 Dismantling – Assembly 5.8 Vertical driving device Vertical driving device 5.8.1 Cut view...

  • Page 120: 5.8 Vertical Driving Device

    5.8 Vertical driving device 5 Dismantling – Assembly 5.8.2 Exploded view...

  • Page 121: Dismantling

    5 Dismantling – Assembly 5.8 Vertical driving device 5.8.3 Dismantling Drain off oil from worm gear housing. The assembly is then accessible after the following parts have been removed in the order stated: • Outlet • Frame hood • Inlet •...
  • Page 122 5.8 Vertical driving device 5 Dismantling – Assembly 4. Unscrew the three screws and remove the guard. 5. Remove the seal ring fitted in the guard. 6. Hit with light blows on the wings of the oil fan. Left-hand thread! Remove the fan.
  • Page 123 5 Dismantling – Assembly 5.8 Vertical driving device 8. Remove the seal ring. 9. Make a wooden support to be used during certain sub-operations. 10. Pull off the ball bearing and the worm. Now and then hit on the head of the centre screw. Wear of teeth, see ‘‘4.6.1 Worm wheel and worm;...
  • Page 124 5.8 Vertical driving device 5 Dismantling – Assembly 12. Just pull – there are no threads. 13. Place the spindle in the tube included in the set of tools. Loosen the screws of the top bearing cover alternately and a little at a time. Remove the cover.
  • Page 125 5 Dismantling – Assembly 5.8 Vertical driving device 15. Lift the spindle out of the spring support. 16. Remove the lower rubber buffer (provided with springs). 17. Remove the springs.
  • Page 126 5.8 Vertical driving device 5 Dismantling – Assembly Tools: Tube End tube Compression tool Dismantling and assembly tool * Not used at dismantling...
  • Page 127 5 Dismantling – Assembly 5.8 Vertical driving device 18. Disassembly of top bearings support from the spindle: • Arrange the tube (1) on a firm support. Fill the tube with rags to protect the spindle from damage when pressing out. •...
  • Page 128 5.8 Vertical driving device 5 Dismantling – Assembly 19. The parts knocked-loose are the upper and lower ball bearing housings and the spacing sleeve. 20. Force out the ball bearing. 21. Check the guide pins. Replace any damaged pins but do not loosen the others. 22.

  • Page 129: Assembly

    5 Dismantling – Assembly 5.8 Vertical driving device 5.8.4 Assembly Note! • The deep groove ball bearing is to be fitted in the upper housing and the angular contact ball bearing in the lower one. • Before fitting the bearings, wipe off the bearing seats of the spindle and apply some oil to the seats.
  • Page 130 5.8 Vertical driving device 5 Dismantling – Assembly 3. Assemble the two housings and the space sleeve into a unit. One tooth (A) and the corresponding recess is wider than the others. Tools: Tube End tube Compression tool Dismantling and assembly tool * Not used at assembly...
  • Page 131 5 Dismantling – Assembly 5.8 Vertical driving device 4. Assemble the top bearings on the vertical drive: • Arrange the tube (1) on a firm support. • Fit the bottom plate (4B) on the tube (1). • Fit the ring (4A) with inside diameter Ø 77 mm in the bottom plate (4B).
  • Page 132 5.8 Vertical driving device 5 Dismantling – Assembly 5. Fit the top bearing support in the tube end and put the springs in place. 6. Mount the rubber buffer with springs. 7. Pour a few drops of oil in the ball bearings (of the same quality as is used in the worm gear housing).
  • Page 133 5 Dismantling – Assembly 5.8 Vertical driving device 10. Mount the cover and tighten its screws alternately, a little at a time. Do not use pneumatic tools. Final tightening torque: 60 Nm. 11. Hit with light blows on the wings of the oil fan. Left-hand thread! 12.
  • Page 134 5.8 Vertical driving device 5 Dismantling – Assembly 13. Make sure that the conical surfaces inside the worm and on the spindle are clean and free from oil before the worm is fitted. 14. Wipe off and grease the bearing seat before fitting the ball bearing.
  • Page 135 5 Dismantling – Assembly 5.8 Vertical driving device 17. Check the radial wobble of the bowl spindle. NOTE Spindle wobble will cause rough bowl running. This leads to vibration and reduces lifetime of ball bearings. • Set up a dial indicator on a magnetic stand. Use the key for the large lock ring as a support for the stand, see the illustration.
  • Page 136 5.8 Vertical driving device 5 Dismantling – Assembly 20. Fit the seal. 21. Fit the protecting collar and push it firmly down against the oil fan. 22. Fit the O-ring dry – do not grease. 23. Fit the protecting plate and tighten the screws.

  • Page 137: Horizontal Driving Device

    5 Dismantling – Assembly 5.9 Horizontal driving device Horizontal driving device 5.9.1 Cut view...

  • Page 138: Dismantling

    5.9 Horizontal driving device 5 Dismantling – Assembly 5.9.2 Dismantling The horizontal driving device is dismantled as follows. It will be easiest to loosen the clamping of the worm wheel if the bowl and spindle are still fitted in the machine. 1.
  • Page 139 5 Dismantling – Assembly 5.9 Horizontal driving device 7. Lift out the cooling coil and take care of the gaskets (A). 8. Fit the puller tool and pull off the ball bearing. 9. Loosen the clamp screws uniformly and successively around the clamping rings in the order stated.
  • Page 140 5.9 Horizontal driving device 5 Dismantling – Assembly 13. Unscrew the centre screw (A) and remove the plain washer (B). Then tighten the screw (A) again to protect the shaft during next operation. 14. Fit the puller tool and pull off the coupling. 15.
  • Page 141 5 Dismantling – Assembly 5.9 Horizontal driving device 16. Knock loose the worm wheel shaft from the motor side with a piece of wood and a tin hammer. 17. Screw off the round nut. 18. Remove the ball bearing. Position the smaller sleeve against the inner race of the ball bearing.

  • Page 142: Assembly

    5.9 Horizontal driving device 5 Dismantling – Assembly 5.9.3 Assembly 1. Clean and oil the bearing seat on the worm wheel shaft. 2. Mount the ball bearing by using the tools illustrated. Use the larger sleeve which acts against the inner race of the ball bearing. 3.
  • Page 143 5 Dismantling – Assembly 5.9 Horizontal driving device 6. Fit the coupling disc. Note the key. Fit the centre screw (with spring washer and plain washer) and tighten it. Fit the elastic plates. 7. Before fitting the worm wheel and the clamping element clean all surfaces thoroughly with a clean cloth.
  • Page 144 5.9 Horizontal driving device 5 Dismantling – Assembly 10. Mount the bearing. Apply the mounting washer and hit a few blows on the latter to ascertain that the bearing is in correct position. Use a tin hammer. 11. Make certain that the worm gear housing and the magnet of the cooling coil have been properly cleaned.

  • Page 145: Radial Wobble Of Worm Wheel Shaft

    Max. permissible radial wobble is 0,1 mm If the wobble is excessive, the worm wheel shaft must be removed from the frame for closer examination. Get in touch with your Alfa Laval representative. The worm wheel shaft may need to be replaced.

  • Page 146: Remote Controlled Brake (Pneumatic)

    5.10 Remote controlled brake (pneumatic) 5 Dismantling – Assembly 5.10 Remote controlled brake (pneumatic) 5.10.1 Changing brake lining – Checking for formation of rust Checking for formation of rust • Formation of rust on the brake parts may cause the brake to jam. Remove any rust and brake dust from surface of the brake shoe (1) and the corresponding guiding surface in the cover (2).
  • Page 147 5 Dismantling – Assembly 5.10 Remote controlled brake (pneumatic) Changing brake lining • A worn lining will lengthen the braking period. 1. Remove the brake cover. 2. Remove the screws and exchange the lining. Note! The screws are slotted at both ends.

  • Page 148: Worm Wheel Guard (With Revolution Counter)

    5.11 Worm wheel guard (with revolution counter) 5 Dismantling – Assembly 5.11 Worm wheel guard (with revolution counter)

  • Page 149: Parts For Mounting Of Motor And Foundation Feet

    5 Dismantling – Assembly 5.12 Parts for mounting of motor and foundation feet 5.12 Parts for mounting of motor and foundation feet Protection cap Seal strip Motor Cover Motor adapter Brake pulley...

  • Page 150: Mounting The Foundation Feet

    5.12 Parts for mounting of motor and foundation feet 5 Dismantling – Assembly 5.12.1 Mounting the foundation feet Check the vibration dampers and replace them when necessary, all at the same time. Apply Loctite 242 on the screws (1) and tighten them. Tightening torque 40 Nm.

  • Page 151: 5.12.2 Removing The Motor

    5 Dismantling – Assembly 5.12 Parts for mounting of motor and foundation feet 5.12.2 Removing the motor Position of screws to be adapted to make of motor • Remove motor cover. • Disconnect the electric cables to the motor. • Fit the lifting eye on top of the motor and tighten it securely.

  • Page 152: 5.12.3 Motor Coupling

    5.12 Parts for mounting of motor and foundation feet 5 Dismantling – Assembly 5.12.3 Motor coupling Dismantling Loosen the lock screw. Apply some grease on the centre screw. Apply some grease on the centre screw of tool. Mount a M20 screw on motor shaft. The screw will serve as a support when pulling off the coupling.

  • Page 153: Trouble-Tracing

    6 Trouble-tracing Contents 6.1 Introduction 6.2 Mechanical functions 6.2.1 Smell 6.2.2 Noise 6.2.3 Separator vibrates 6.2.4 Starting power too high 6.2.5 Starting power too low 6.2.6 Speed too low 6.2.7 Starting time too long 6.2.8 Water in worm gear housing 6.3 Separating functions 6.3.1 Unsatisfactory separation result...

  • Page 154: Introduction

    6.1 Introduction 6 Trouble-tracing Introduction If the separator has been installed as a part of a processing system always study the trouble- tracing part (if any) in the system documentation first. If the problem is not solved, continue with this chapter.

  • Page 155: Separator Vibrates

    6 Trouble-tracing 6.1 Mechanical functions 6.2.3 Separator vibrates NOTE Some vibration is normal during the starting and stopping sequences when the separator passes through its critical speed. DANGER Disintegration hazards When excessive vibration occurs, stop separator and keep bowl filled with liquid during rundown.

  • Page 156: Starting Power Too Low

    6.1 Mechanical functions 6 Trouble-tracing 6.2.5 Starting power too low Cause Corrective actions Motor failure Repair/renew the motor 6.2.6 Speed too low Cause Corrective actions Bowl is leaking or not closed Dismantle the bowl and check Motor failure Repair/renew the motor Bearing is damaged Renew Incorrect gear transmission (60 Hz gear for 50...

  • Page 157: Separating Functions

    6 Trouble-tracing 6.3 Separating functions Separating functions 6.3.1 Unsatisfactory separation result Cause Corrective actions Gravity disc hole is too small Use a disc with larger hole Incorrect separation temperature Adjust Throughput is too high Adjust Bowl disc stack is clogged Clean the disc stack Sediment space in bowl is filled See ‘‘6.3.11 Bowl clogged with sediment’’...

  • Page 158: Outgoing Heavy Phase Contains Light Phase

    6.3 Separating functions 6 Trouble-tracing 6.3.3 Outgoing heavy phase contains light phase Cause Corrective actions Gravity disc hole is too large Use a disc with smaller hole Incorrect separation temperature Adjust Throughput is too high Adjust The closing water line is obstructed or the Check for correct values in the ‘‘7.3 Connection water pressure/flow is too low, which give rise list”...

  • Page 159: Bowl Opens Accidentally During Operation

    6 Trouble-tracing 6.3 Separating functions 6.3.5 Bowl opens accidentally during operation Cause Corrective actions Strainer in the operating water supply is Clean the strainer clogged No water in the operating water system Check the operating water system and make sure the valve(s) are open Water connections to the separator are Correct incorrectly fitted...

  • Page 160: Liquid Flows Through The Bowl Casing Drain And/Or Sediment Outlet

    6.3 Separating functions 6 Trouble-tracing 6.3.7 Liquid flows through the bowl casing drain and/or sediment outlet Cause Corrective actions Sediment discharge or liquid draining in None (normal) progress The closing water line is obstructed or the Check closing water pressure/flow. water pressure/flow is too low or too high Compare with the recommended values in the chapter ‘‘7.3 Connection list”...

  • Page 161: High Pressure In Clean Liquid Outlet

    6 Trouble-tracing 6.3 Separating functions 6.3.9 High pressure in clean liquid outlet Cause Corrective actions Throughput is too high Adjust Valve(s) in clean liquid outlet line is throttled Adjust the back pressure too much 6.3.10 Air intermingles with the cleaned liquid Cause Corrective actions Back pressure in the clean liquid outlet is too...
  • Page 162 6.3 Separating functions 6 Trouble-tracing...

  • Page 163: Technical Reference

    7 Technical Reference Contents 7.1 Technical data 7.7 Foundation drawing 7.2 Basic size drawing 7.8 Motor data 7.3 Connection list 7.9 Machine plates and safety labels 7.4 Interface description 7.10 Interconnection diagram for 7.4.1 General monitoring kit 7.4.2 Definitions 7.4.3 Component description and signal processing 7.11 Storage and installation...

  • Page 164: Technical Data

    7.1 Technical data 7 Technical Reference Technical data Alfa Laval ref. 556629, rev. 1 NOTE The separator is a component operating in an integrated system including a monitoring system. If the technical data in the system description does not agree with the technical data in this instruction manual, the data in the system description is the valid one.
  • Page 165 7 Technical Reference 7.1 Technical data Outlet paring disc capacity Paring disc: Ø = 210 mm Wing height:12 mm Gravity disc: Ø = 200 mm Throttling washer in feed tube: Ø = 20 mm Pressure (bar) Overflow to light phase outlet Flow (m /hour) Inlet pressure (bar)
  • Page 166 7.1 Technical data 7 Technical Reference Outlet paring disc capacity Paring disc: Ø = 210 mm Wing height:12 mm Gravity disc: Ø = 200 mm Throttling washer in feed tube: Ø = 25 mm Pressure (bar) Overflow to light phase outlet Flow (m /hour) Inlet pressure (bar)
  • Page 167 7 Technical Reference 7.1 Technical data Outlet paring disc capacity Paring disc: Ø = 210 mm Wing height:12 mm Gravity disc: Ø = 200 mm Throttling washer in feed tube: Ø = 30 mm Pressure (bar) Overflow to light phase outlet Flow (m /hour) Inlet pressure (bar)

  • Page 168: Basic Size Drawing

    7.2 Basic size drawing 7 Technical Reference Basic size drawing Alfa Laval ref. 556618, rev. 0 Maximum horizontal displacement at the in/outlet Tightening torque 100 Nm connections during operation is ±20 mm Adjusting washers max. 4 pieces per foot Connections 201 and 221 are turnable 360°...
  • Page 169 7 Technical Reference 7.2 Basic size drawing 16 holes, Ø 11 mm Nut, DN 76, SMS 1148 Stainless steel All connections to be installed non-loaded and flexible Data for connections, see chapter ‘‘7.3 Connection list” on page 168...

  • Page 170: Connection List

    7.3 Connection list 7 Technical Reference Connection list Alfa Laval ref. 556795, rev. 0 Connection No. Description Requirements/limits Inlet for process Allowed temperature 0 - 100 °C Allowed density Max. 1100 kg/m Outlet for light phase Outlet for heavy phase...
  • Page 171 7 Technical Reference 7.3 Connection list Connection No. Description Requirements/limits Inlet of discharge and make-up liquid See demand in chapter ‘‘7.5.1 Operating liquid” on page 178 Max. density 1000 kg/m Make-up liquid - Pressure 25 - 40 kPa - Flow (momentary) * 10 m /hour - Consumption *...
  • Page 172 7.3 Connection list 7 Technical Reference Connection No. Description Requirements/limits Pneumatic discharge valve for OWM-TWIN See ‘‘7.4 Interface description” on page 172 Type 2-way (2/2) direct activated Power supply, AC: 24 V 48 V 110 V Power supply, DC: 24 V Effect, nominal: 19,7 W 16,7 W 16,7 W 16,7 W Effect, inrush:...
  • Page 173 7 Technical Reference 7.3 Connection list Connection No. Description Requirements/limits Cover interlocking switch See ‘‘7.4 Interface description” on page 172 Type Mechanical switch Switch rating, resistive load, max. 12 V 75 VA 24 V 200 VA 48 V 280 VA 127 V 500 VA 13 W...

  • Page 174: Interface Description

    7.4 Interface description 7 Technical Reference Interface description Alfa Laval ref. 556718, rev. 1 7.4.1 General In addition to the Connection list on page 168, this document describes limitations and conditions for safe control, monitoring and reliable operation. At the end of the document a function graph and running limitations are found.
  • Page 175 7 Technical Reference 7.4 Interface description Comply to following conditions: • Sediment ejection must not be made. • The machine must not be restarted before the reason for the safety stop has been investigated and action has been taken. In case of emergency condition in the plant, the machine must be stopped in a way that is described in EN 418.
  • Page 176 7.4 Interface description 7 Technical Reference Large discharge • Opening time for solenoid valves 711 and 710 are 10 and 5 seconds respectively according to the diagram beside. • The desired discharge volume is obtained by adjusting the air pressure on the regulator (2) to about 300 - 400 kPa (3 - 4 bar).
  • Page 177 7 Technical Reference 7.4 Interface description Speed sensor (741) The separator is equipped with a proximity sensor mounted near the motor shaft pulley. The pulley is equipped with four grooves giving a correspondent number of impulses per revolution of the motor shaft. The bowl speed is calculated from the gear ratio and the r/min of the motor shaft.
  • Page 178 7.4 Interface description 7 Technical Reference Vibration sensor (750) The separator is equipped with a vibration sensor of velocity type, mounted on the frame. The sensor converts the mechanical vibration to an electric signal. The signal has to be converted in a special transducer, in which the signal is compared with preset limit values.
  • Page 179 7 Technical Reference 7.4 Interface description Cover interlocking switch (760) The cover of the separator is equipped with an interlocking switch. When the cover is closed the interlocking circuit in the starter control is closed and the separator could be started. Signal Processing The circuit is closed when the frame hood of the separator is closed.

  • Page 180: Quality Requirements

    If these demands cannot be met, the liquid should be pre-treated in accordance with Alfa Laval’s recommendations. Alfa Laval accepts no liability for consequences arising from unsatisfactory purified operating liquid supplied by the customer. Suspended particles Content of suspend substances: Less than 0,001 percentage of volume.
  • Page 181 7.5 Quality requirements 7.5.2 Compressed air Alfa Laval ref. 553407, rev. 1 The air supply to pneumatic instruments such as transmitters, controllers, converters, relays etc. must be of such a quality that satisfactory function is ensured for a reasonable time.

  • Page 182: Lubricants

    7.6 Lubricants 7 Technical Reference Lubricants 7.6.1 Lubrication chart, general Alfa Laval ref. 553216-01, rev. 5 Lubricating points Lubricants Bowl spindle ball bearings and buffers are Lubricating oil as specified in ‘‘7.6.2 lubricated by oil mist. Recommended lubricating oils” on page 182.
  • Page 183 7 Technical Reference 7.6 Lubricants Always use clean vessels when handling lubricating oil. Great attention must be paid not to contaminate the lubricating oil. Of particular importance is to avoid mixing of different types of oil. Even a few drops of motor oil mixed into a synthetic oil may result in severe foaming.
  • Page 184 Recommended lubricating oils Alfa Laval ref. 553219-05, rev. 1 One group of lubricating oil is approved for this separator. It is designated as Alfa Laval lubricating oil group B. The numerical value after the letter states the viscosity grade. The corresponding commercial oil brands are found in chapter ‘‘7.6.3 Recommended oil...
  • Page 185 7 Technical Reference 7.6 Lubricants 7.6.3 Recommended oil brands Alfa Laval lubricating oil group B/320 Alfa Laval ref. 553218-05, rev. 0 Viscosity grade VG (ISO 3448/3104) 320 Viscosity index VI (ISO 2909) > 92 Manufacturer Designation Bel-Ray 100 Gear oil...
  • Page 186 7.6 Lubricants 7 Technical Reference 7.6.4 Recommended lubricants Alfa Laval ref. 553217-01, rev. 4 Pastes and bonded coatings for non-food applications Manufacturer Designation Alfa Laval No. Application Gleitmolybdän Gleitmo 805 K or 805 K varnish 901 Gleitmo Paste G rapid...
  • Page 187 7 Technical Reference 7.6 Lubricants Silicone grease Manufacturer Designation Alfa Laval No. Dow Corning Molykote 111 compound - 100 g 539474-02 - 25 g 539474-03 Gleitmolybdän Silicone paste 750 Wacker Silicone Paste P (vacuum paste) Greases for ball and roller bearings...

  • Page 188: Foundation Drawing

    7.7 Foundation drawing 7 Technical Reference Foundation drawing Alfa Laval ref. 556786, rev. 0...
  • Page 189 7 Technical Reference 7.7 Foundation drawing Min. lifting capacity when doing service: Recommended free floor space for unloading 900 kg when doing service Max. height of largest component incl. No fixed installation within this area lifting tool Recommended speed for lifting: Low speed, 0,5-1,5 metres/minute Vertical force not exceeding 69 kN/foot High speed, 2-6 metres/minute...

  • Page 190: Motor Data

    7.8 Motor data 7 Technical Reference Motor data Alfa Laval ref. 551672, rev. 1 Current and speed curves at Y/ ∆ -starting Performance curves Speed (r/min) Current (A) Time (minutes) Motor speed (r/min) Measured Calculated Current (A) Power input (kW)
  • Page 191 7 Technical Reference 7.8 Motor data η Article Output Manu- Type Number Speed Speed Power Starting (kW) facturer 50 Hz 60 Hz factor torque (cos ϕ) poles (r/min) (r/min) (Nm) 544143 BROOK UC 225 LH 1450 1750 91,5 0,87 η ϕ...

  • Page 192: Machine Plates And Safety Labels

    7.9 Machine plates and safety labels 7 Technical Reference Machine plates and safety labels Alfa Laval ref. 555564, rev. 0 1. Machine plate Separator type AFPX 517XGV-14CG Manufacturing serial No / Year XXXX / XX Product No 881118-04-01 Machine top part...
  • Page 193 7 Technical Reference 7.9 Machine plates and safety labels 3. Safety label Text on label: DANGER Read the instruction manuals before installation, operation and maintenance. Consider inspection intervals. Failure to strictly follow instructions can lead to fatal injury. If excessive vibration occurs, stop separator and keep bowl filled with liquid during rundown.

  • Page 194: Interconnection Diagram For Monitoring Kit

    7.10 Interconnection diagram for monitoring kit 7 Technical Reference 7.10 Interconnection diagram for monitoring kit Alfa Laval ref. 555477, rev. 3 Wire colour codes: Black Brown Blue GN-YW Green-Yellow BK-YW Black-Yellow Yellow White SHI. Shield SIG. Signal TRANS Transparent Speed sensor (motor shaft speed)

  • Page 195: Storage And Installation

    7 Technical Reference 7.11 Storage and installation 7.11 Storage and installation 7.11.1 Introduction First of all, ensure that the separator delivered is suitable for the application. Elements that are important to consider are, e.g., process liquid density and temperature, corrosion characteristics, sludge characteristics, solids contents of the process liquid, toxicity, inflammability, degree of automation, etc.
  • Page 196 7.11 Storage and installation 7 Technical Reference A separator can be delivered with different types of protection: • Fixed on a pallet. The separator must be stored in a storage room well protected from mechanical damage and also dry and protected from rain and humidity.
  • Page 197 7 Technical Reference 7.11 Storage and installation Transport Specification • During transport of the separator, the frame hood and bowl must always be removed from the machine. • When lifting a separator it must always be hung securely. See chapter ‘‘4.4 Lifting instruction”...
  • Page 198 7.11 Storage and installation 7 Technical Reference Recommendation • The spanner for the large lock ring should have sufficient space to make a complete turn without touching any of the ancillary equipment surrounding the separator. Important measurements Important measurements are the minimum lifting height for lifting tackle, shortest distance between driving motor and wall, free passage for dismantling and assembly, maintenance and...
  • Page 199 7 Technical Reference 7.11 Storage and installation 7.11.4 Foundations NOTE When lifting a separator it must always be hung securely. See chapter ‘‘4.4 Lifting instruction” on page 68. Specification • The separator should be installed at floor level, see chapter ‘‘7.7 Foundation drawing” on page 186 for measures and how to pour the foundation plate in concrete.
  • Page 200 7.11 Storage and installation 7 Technical Reference...
  • Page 201 You can do this by copying this page and sending it by fax, or you could mail it, or hand it over to your local Alfa Laval representative. Alfa Laval Separation AB, Separator Manuals, dept. SKEL, S-147 80 Tumba, Sweden. Fax: +46 8 53031040.
  • Page 203 If you wish to order extra copies of this manual, please copy this page and give it to your local Alfa Laval representative, who will advise you of current prices. Your local Alfa Laval representative will also be able to help you with information regarding any other manuals.

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