Alfa Laval S 831 Manual
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Alfa Laval S 831 Manual

Alfa Laval S 831 Manual

Fuel oil high speed separator - purifier
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Separator Manual
High Speed Separator
S 831 & S 836
Product No. 881202-03-04/1 & 881202-02-04/1
Book No.
592763-02 Rev. 1

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Summary of Contents for Alfa Laval S 831

  • Page 1 Separator Manual High Speed Separator S 831 & S 836 Product No. 881202-03-04/1 & 881202-02-04/1 Book No. 592763-02 Rev. 1...
  • Page 2 SE-147 80 Tumba, Sweden Telephone: +46 8 530 650 00 Telefax:+46 8 530 310 40 © Alfa Laval Tumba AB January 2010 Original instructions This publication or any part there of may not be reproduced or transmitted by any process or means without prior written permission of Alfa Laval Tumba AB.

  • Page 3: Table Of Contents

    Contents Read This First .............. . Safety Instructions ............Warning signs in text ..........14 Environmental issues ..........15 Requirements of personnel........16 Basic Principles Of Separation ......Separation By Gravity..........17 Centrifugal Separation .......... 18 Temperatures ............18 Design ................
  • Page 4 6.3.4 Bowl ................52 6.3.5 Driving device..............63 6.3.6 Centrifugal clutch ............76 Actions Before Assembly ........84 6.4.1 Cleaning ..............84 6.4.2 Inspection for corrosion ..........86 6.4.3 Inspection for cracks ........... 87 6.4.4 Inspection for erosion ..........88 6.4.5 Exchange of frame feet ..........
  • Page 5 Technical Reference ..........Product description ..........157 Technical Data ............158 Connection List............159 Interface Description ........... 161 8.4.1 Scope ................161 8.4.2 References ..............161 8.4.3 Definitions ..............162 8.4.4 Goal ................162 8.4.5 Description of separator modes ........163 8.4.6 Remote start ..............

  • Page 7: Read This First

    Alfa Laval S 831 & S 836 separator. If the separator has been delivered and installed by Alfa Laval as a part of a processing system, this manual should be viewed as part of the System Documentation.
  • Page 8 1 READ THIS FIRST Service, Dismantling, Assembly This chapter gives instructions for the maintenance procedures. It also contains step- by-step instructions for dismantling and assembly of the separator for service and repair. Fault Finding Refer to this chapter if the separator functions abnormally.

  • Page 9: 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 10 • Use the separator only for the purpose and parameter range specified by Alfa Laval. • Check that the gear ratio is correct for power frequency used. If incorrect, subsequent overspeed may result in a serious break down.

  • Page 11: Electrical Hazard

    2 Safety Instructions 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 12: Noise Hazards

    2 Safety Instructions Noise hazards • Use ear protection in noisy environments. Burn hazards • Lubrication oil, machine parts and various machine surfaces can be hot and cause burns. Wear protective gloves. Skin irritation hazards • When using chemical cleaning agents, make sure you follow the general rules and suppliers recommendation regarding ventilation, personnel...
  • Page 13 2 Safety Instructions Cut hazards • Sharp edges, especially on bowl discs and threads, can cause cuts. Wear protective gloves. Flying objects • Risk for accidental release of snap rings and springs when dismantling and assembly. Wear safety goggles. Health hazard •...

  • Page 14: Warning Signs In Text

    2 Safety Instructions Warning signs in 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 indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

  • Page 15: Environmental Issues

    2 Safety Instructions Environmental issues Unpacking Packing material consists of wood, plastics, cardboard boxes and in some cases metal straps. Wood and cardboard boxes can be reused, recycled or used for energy recovery. Plastics should be recycled or burnt at a licensed waste incineration plant.

  • Page 16: Requirements Of Personnel

    2 Safety Instructions Requirements of personnel Only skilled or instructed persons are allowed to operate the machine, e.g. operating and maintenance staff. • Skilled person: A person with technical knowledge or sufficient experience to enable him or her to perceive risks and to avoid hazards which electricity/mechanics can create.

  • Page 17: Basic Principles Of Separation

    3 Basic Principles Of Separation The purpose of separation can be to • free a liquid of solid particles, • separate two mutually insoluble liquids with different densities while removing any solids present at the same time, • separate and concentrate solid particles from a liquid.

  • Page 18: Centrifugal Separation

    3.2 CENTRIFUGAL SEPARATION 3 BASIC PRINCIPLES OF SEPARATION 3.2 Centrifugal Separation In a rapidly rotating bowl, the force of gravity is replaced by centrifugal force, which is many Lighter liquid Heavier liquid times greater. Separation and sedimentation is continuous and takes place very quickly. The centrifugal force in the separator bowl can achieve in a few seconds that which takes many hours in a tank under influence of gravity.

  • Page 19: Design

    4 Design Process section The feed inlet and outlets Electric motor are situated at the top of the separator. The rotating bowl is driven by the electric motor via a The liquid is cleaned in the belt transmission. rotating separator bowl inside the frame hood.

  • Page 20: Overview

    4.1 OVERVIEW 4 DESIGN 4.1 Overview The separator comprises a process section and a drive section powered by an electric motor. The separator frame comprises a lower body and a frame hood. The motor is attached to the frame. The frame feet dampen vibration. The bottom part of the separator contains a flat belt transmission, a centrifugal clutch and a vertical spindle.

  • Page 21: The Drive Section

    4 DESIGN 4.2 THE DRIVE SECTION 4.2 The Drive Section The separator bowl is driven by an electric motor via a belt transmission. The belt pulley on the motor shaft includes a centrifugal clutch. Flat belt The flat belt transmission has a ratio which increases the bowl speed several times compared with the motor speed.

  • Page 22: The Process Section

    4.3 THE PROCESS SECTION 4 DESIGN 4.3 The Process Section The separation process takes place inside the rotating separator bowl. The feed and outlet of process liquid takes place in the in and outlet unit on top of the separator frame hood.
  • Page 23 4 DESIGN 4.3 THE PROCESS SECTION Pipe Spring Uncleaned oil Cleaned oil Water Paring tube Paring disc Connecting housing...
  • Page 24 4.3 THE PROCESS SECTION 4 DESIGN Separator bowl The separator bowl, with its sludge discharge mechanism, is built-up as follows: The bowl body and bowl hood are held together by a lock ring (Centrilock). Inside the bowl are the distributor and the disc stack. The disc stack is kept compressed by the bowl hood.
  • Page 25 4 DESIGN 4.3 THE PROCESS SECTION Water paring chamber Bowl hood Top disc Oil paring chamber Bowl body Disc stack Lock ring Seal ring Discharge slide Operating slide Sludge space Nozzle Holder Operating water ring...

  • Page 26: Sensors

    4.4 SENSORS 4 DESIGN 4.4 Sensors The separator is equipped with a speed sensor. As options an unbalance sensor and an interlocking kit can be fitted. Speed sensor Monitoring kit (optional) A speed sensor indicates the speed of the separator. The For indication of any abnormal unbalance, the separator can be equipped with a sensor monitoring the radial position of correct speed is needed to achieve the best separating...

  • Page 27: Separating Function

    4 DESIGN 4.5 SEPARATING FUNCTION 4.5 Separating Function The separator separates water and solids from the uncleaned oil. Water normally leaves the separator through the water outlet. During sludge discharge, solids (sludge) and water are removed through the discharge ports. 4.5.1 The liquid balance in the bowl The liquid levels in the bowl depend on many factors (bowl geometry, liquid densities, flow...

  • Page 28: Alcap Tm Concept

    4 DESIGN SEPARATOR MANUAL 4.5.2 Liquid flow 4.5.4 ALCAP concept Unseparated oil is fed into the bowl through When the sludge space is filled up and water the inlet pipe and travels via the distributor enters the disc stack, traces of water will towards the periphery of the bowl.
  • Page 29 4 DESIGN 4.5 SEPARATING FUNCTION DISCHARGE OF WATER THROUGH WATER OUTLET Unseparated oil Bowl hood Separated oil Water Oil paring disc Water paring tube Water paring chamber Oil paring chamber Holes in distributor Top disc Sludge space Oil/water interface Uncleaned oil Cleaned oil Water...
  • Page 30 4.5 SEPARATING FUNCTION 4 DESIGN...

  • Page 31: Operating Instructions

    5 Operating Instructions These operating instructions describe routine procedures to follow before and during the start, running and stopping sequences of the separator. If system documentation is available, always follow the operating instructions therein. If there is no system documentation, the instructions below are to be followed.

  • Page 32: Start After Service

    5.2 START AFTER SERVICE 5 OPERATING INSTRUCTIONS 5.2 Start After Service Pay special attention to any unusual sounds or vibrations when starting the separator after a service. Different fault symptoms are listed in chapter 7 Fault Finding, page 151. 5.3 Before Normal Start To achieve the best separation results, the bowl should be in a clean condition.

  • Page 33: Start

    5 OPERATING INSTRUCTIONS 5.4 START 5.4 Start Start of separator. a Open the water supply valve. b Start the separator by pushing the start button at the starter unit. After every start the separator must always be run continuously for a minimum of 1 hour to ensure proper lubrication.
  • Page 34 5.4 START 5 OPERATING INSTRUCTIONS Check the separator for vibration. Normal vibration Vibration may occur during start up when passing critical speed. Excessive vibration This is normal and should pass If vibration increases, or without danger. continues at full speed, keep bowl filled and stop the separator.
  • Page 35 5 OPERATING INSTRUCTIONS 5.4 START Ensure that the separator is at full speed (after about 60 - 150 seconds). The time by full speed can be checked by studying the ammeter Current increases during start..to decrease to a stable value when full speed has been reached.
  • Page 36 5.4 START 5 OPERATING INSTRUCTIONS Turn on the oil feed. Before turning on the feed make sure that the oil has the correct temperature.

  • Page 37: Operating

    5 OPERATING INSTRUCTIONS 5.5 OPERATING 5.5 Operating Checkpoints during operation: a Check all connections for leakage. b Check that the feed has correct flow and temperature. c Check the back pressure. d Check that the starter ammeter reading is the normal low and steady value. e Check for abnormal vibrations and sounds.

  • Page 38: Sludge Discharge During Operation

    5.5 OPERATING 5 OPERATING INSTRUCTIONS 5.5.1 Sludge discharge during operation Turn off the oil feed. a Turn off oil feed b Wait 5 seconds. Perform a sludge discharge. a Add opening water until a discharge sound is heard (3 seconds). b Wait 15 seconds.
  • Page 39 5 OPERATING INSTRUCTIONS 5.5 OPERATING Turn on the oil feed. Before turning on the feed, make sure that the oil has the correct temperature.

  • Page 40: Stop

    5.6 STOP 5 OPERATING INSTRUCTIONS 5.6 Stop Turn off the oil feed. a Turn off oil feed b Wait 5 seconds. Perform a sludge discharge. a Add opening water until a discharge sound is heard (3 seconds). b Wait 15 seconds. c Add closing water for 15 seconds.
  • Page 41 5 OPERATING INSTRUCTIONS 5.6 STOP Fill the bowl up with water and stop the separator. Keep the bowl filled during run-down to minimize the vibrations. Wait until the separator has stopped (after about 30 minutes). Check rotation of motor fan.

  • Page 42: Emergency Stop

    Disintegration hazard starting any dismantling work. After an emergency stop, the cause of the fault must be identified. If all parts have been checked and the cause not found, contact Alfa Laval for advice before restarting the separator.

  • Page 43: Service, Dismantling, Assembly

    SEPARATOR MANUAL 6 SERVICE, DISMANTLING, ASSEMBLY 6 Service, Dismantling, Assembly 6.1 Periodic Maintenance 6.1.2 Maintenance procedures At each Inspection and/or Overhaul, take a Periodic (preventive) maintenance reduces copy of the maintenance log and use it to make the risk of unexpected stoppages and notes during the service.

  • Page 44: Tightening Of Screws

    Renew the valve plugs on the operating slide All symbols used in the instructions refer to Always use Alfa Laval genuine parts as otherwise activities mentioned in the maintenance logs. the warranty may become invalid. Alfa Laval takes no responsibility for the safe operation of the equipment if non-genuine spare parts are used.

  • Page 45: Maintenance Log

    6 SERVICE, DISMANTLING, ASSEMBLY 6.2 MAINTENANCE LOG 6.2 Maintenance Log Name of ship/plant: Local identification: Separator: S 831 & S 836 Manufacture No./Year: Total running hours: Product No.: 881202-03-04/1 & 881202-02-04/1 Date: Signature: Part Action Page Note In and outlet device...
  • Page 46 6.2 MAINTENANCE LOG 6 SERVICE, DISMANTLING, ASSEMBLY Part Action Page Note Frame - Frame feet Renew frame feet (including washers Has to be ordered and screws) separately - Drain and oil filling holes Renew washers - Oil pin Renew O-ring Driving device - All parts Clean...
  • Page 47 6 SERVICE, DISMANTLING, ASSEMBLY 6.2 MAINTENANCE LOG Part Action Page Note Signs and labels on separator - Machine plate x Check attachment and legibility - Power supply frequency x Check attachment and legibility - Lifting instructions x Check attachment and legibility - Safety labels x Check attachment and legibility - Name plate...

  • Page 48: Dismantling

    6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 Dismantling 6.3.1 Introduction The frame hood and heavy bowl parts must be lifted by means of a hoist. Position the hoist exactly above the bowl centre. Use a lifting sling and lifting hooks with safety catches.
  • Page 49 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Standard Tools Screwdriver Torque wrench (capacity 0-200 Nm) Drift ( Ø 4 mm) Dial indicator with magnetic base Spanner for clutch Heating equipment for bearings Sliding calliper Hammers (standard and soft-faced) Pliers for internal snap rings Pliers for external snap rings T-handle with extension rod, sockets (13, 16, 17, 18, 19, 27, 30 mm)

  • Page 50: Frame Hood

    6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY 6.3.3 Frame hood Lock nut Washer Connecting housing Spring Screws Frame hood 1 Hook spanner (lock nut) O-ring Height adjusting rings Support ring Entrapment hazard To avoid accidental start, switch off and lock-out the power supply before starting any dismantling work.
  • Page 51 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the spring and arm. a Remove the spring from the pin on the hood. b Remove the arm together with the spring. c Turn the paring tube so that the frame hood can be removed upwards.

  • Page 52: Bowl

    6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY 6.3.4 Bowl Lock ring Bowl hood Seal ring O-ring Top disc O-rings Inlet and outlet pipe Paring tube Axial support. Splash sealing Bowl disc (without caulks) Bowl discs Distributor Cap nut Discharge slide Rectangular ring O-ring Bowl body Rectangular ring...
  • Page 53 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the lock ring a Fit the compressing tool. b Fit the clamps and the c Compress the disc stack by screws to stop. alternately tightening the inner screws on the compressing tool to a maximum of 60 Nm. Be sure not to cover the threaded holes.
  • Page 54 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the bowl hood. a Remove the compressing screws. b Loosen the screws on the clamp tool. Remove the tool. Remove the lock ring. The bowl hood must be pulled off straight up, in order not to get stuck. Recommendation: Take measurements with a calliper around the bowl, between the upper edge of...
  • Page 55 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the seal ring. a Place the bowl hood on a support and tap out a piece of the seal ring using a drift in the holes. b Turn the bowl hood upside down and remove the seal ring by carefully knock pieces of the seal ring out of the groove, using the...
  • Page 56 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the paring tube. a Remove the top disc from the inlet and outlet pipe. To avoid damaging the paring tube, turn it towards the centre of the pipe. b Remove the splash sealing. c Remove the screws and the axial support d Lift up and remove the...
  • Page 57 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the disc stack and distributor. c Carefully lift off the a Assemble the lifting tool with the pin. disc stack assembly. b Fit the assembled tool into the distributor and ease off the disc stack using a spanner or wrench.
  • Page 58 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the discharge slide. a Fit the lifting tool by pressing the puller rods towards each other and position them into the two slots on the bowl b Ease off the discharge slide bottom. by turning the central screw.
  • Page 59 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the cap nut. a Remove the cap nut Left-hand thread! Removing the bowl body a Fit the lifting tool to the bowl body. b Raise the bowl body off the spindle taper by turning the lifting eye clock-wise. c Lift off the bowl body...
  • Page 60 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Turn the bowl body upside down. Crush hazard Support the bowl body when turning to prevent it from rolling. Removing the holder. a Remove and discard the screws and washers. New screws and washers are included in the Inspection kit.
  • Page 61 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the operating slide. a Lift off the operating slide. If the ring sticks, use two M8 screws in threaded holes to raise the operating slide holder up and away from the bowl body. Removing the valve plugs from the operating slide.
  • Page 62 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the operating water ring. a Remove and discard the screws. New screws are included in the Inspection kit. b Lift off the ring. If the ring sticks, use two M8 screws in threaded holes to raise the operating water ring up and away from the bowl body.

  • Page 63: Driving Device

    6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING 6.3.5 Driving device 1 Puller (spindle pulley, 4 Lifting tool ball bearing). (spindle assembly) 2 Tool (bearing housing). 5 Drift (bottom bearing). 3 Cover puller 6 Sleeve (ball bearing in (neck bearing cover). top bearing seat 7 Pin spanner (oil fan).

  • Page 64: Removing The Clutch Cover

    6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Empty the oil sump. Unscrew the oil plug and empty the oil sump. Removing the clutch cover. a Remove the screws. b Remove the clutch cover.
  • Page 65 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Loosen the flat belt, by tilting the motor. a Loosen, but do not remove, the screws holding the motor. Start with the two screws at the bottom. Motor Do not loosen more than shown in the illustration. Separator frame Screw b Loosen the two upper screws a little bit more so...
  • Page 66 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the operating water cover. a Remove the screws. b Lift off the operating water cover. If the cover sticks, fit two M10 screws to the threaded holes and tighten. Removing the neck bearing cover and deflector ring. d Lift off the neck bearing cover together with the deflector ring.
  • Page 67 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Prepare for removal of spindle assembly. To facilitate later removal of plugs, loosen (do not remove) the plugs on the bearing housing. b Remove the screws If the cover sticks, fit two M10 screws to the threaded holes and tighten.
  • Page 68 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Lifting the spindle assembly from the frame. a Fit the lifting tool to the spindle end. b Slowly raise and lift out the spindle assembly. Crush hazard Do not rotate the spindle assembly during lifting. The spindle assembly may otherwise come loose from the lifting tool.
  • Page 69 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Place the spindle assembly upside down on a support. Make a support ~174 mm ~130 mm ~3,0 mm free space Removing the air deflector. Remove the screws and the air deflector.

  • Page 70: Removing The Fan

    6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the fan. a Turn the spindle assembly the right way up. b Place a spanner (or similar) on the spindle pulley key-grip, as holder-up. c Fit the pin spanner and remove the fan. Key-grip Left-hand thread! Removing the bottom bearing assembly.
  • Page 71 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the top bearing housing. a Turn the spindle b Remove the plugs Compression assembly over. springs and the compression springs. c Carefully remove the spindle from the top bearing seat. Plug Be careful not to damage d Collect the the vibration indicator.
  • Page 72 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the ball bearing. a Remove the snap ring. Risk for eye injury from flying snap ring Use the correct pliers for dismantling of snap ring to avoid accidental release. b Fit the cap nut on the spindle to protect the threads.
  • Page 73 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the labyrinth ring holder. If the holder sticks, fit two screws M8 to the threaded holes and tighten.
  • Page 74 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the bottom bearing holder. a Fit the tool into the bottom bearing holder and attach the socket, extension rod and T-handle. T-handle Extension rod Socket Tool b Loosen the bottom bearing holder by turning it counter clockwise.
  • Page 75 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Dismantling the bottom bearing holder (where necessary) a Unscrew the screw b Remove the pipe, O-rings and strainer.

  • Page 76: Centrifugal Clutch

    6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY 6.3.6 Centrifugal clutch Snap rings Ball bearings Spacing ring Belt pulley Coupling Parallel pin Entrapment hazard To avoid accidental start, switch off and lock-out power supply before starting any dismantling work. Friction blocks (3=60 Hz) Make sure that machine has come to a complete Cover standstill before starting any dismantling work...
  • Page 77 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the clutch cover. a Loosen and remove the screws. b Remove the clutch cover. Removing the fan.
  • Page 78 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Loosen the flat belt, by tilting the motor. a Loosen, but do not remove, b Attach shackle with lifting sling to the the screws holding the upper hole in the motor frame and remove motor.
  • Page 79 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Removing the motor. a Disconnect the electrical cables. Electrical hazard If the cables are not disconnected during lifting procedures, they may become damaged. c Tense the lifting sling to support the motor and b Fit a sling to the remove the screws.
  • Page 80 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Checking the condition of the friction blocks If the blocks are worn: Fit new friction blocks. Inhalation hazard Replace all blocks, even if only one is When handling friction worn. blocks/pads wear a mask to avoid inhalation of dust.
  • Page 81 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Complete dismantling of centrifugal clutch Removing the coupling from the motor. a Remove the screw, spring washer and washer. Washer Spring washer Screw Attach a socket with extension rod and handle to the screw. Place a piece of wood according to the illustration.
  • Page 82 6.3 DISMANTLING 6 SERVICE, DISMANTLING, ASSEMBLY Removing the coupling from the motor using the optional hydraulic tool. First remove the screw, spring washer and washer according to instructions a -b, on previous page. a Fit the sleeve to the stud bolt. b Fit the holder to the coupling nave.
  • Page 83 6 SERVICE, DISMANTLING, ASSEMBLY 6.3 DISMANTLING Dismantling of the coupling assembly. a Remove the snap rings. b Drive out the coupling hub. Wooden support Support c Turn the coupling the other way round and drive out the ball bearings using the mounting tool.

  • Page 84: Actions Before Assembly

    6.4 ACTIONS BEFORE ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY 6.4 Actions Before Assembly 6.4.1 Cleaning Clean the separator parts according to the diagram below. Afterwards, protect all cleaned carbon steel parts against corrosion by oiling. Part Procedure Cleaning agents Frame and The external cleaning of the frame and motor should be Water and de-greasing agent.
  • Page 85 6 SERVICE, DISMANTLING, ASSEMBLY 6.4 ACTIONS BEFORE ASSEMBLY Part Procedure Cleaning agents Bowl Cleaning of bowl discs A chemical cleaning agent must dissolve the deposits quickly without Inlet/ outlet Handle the bowl discs carefully in order to avoid damage to attacking the material of the separator the surfaces during cleaning parts.

  • Page 86: Inspection For Corrosion

    Evidence of corrosion attacks should be looked Disintegration hazards for and rectified each time the separator is Always contact your Alfa Laval representative if you dismantled. suspect that the depth of the corrosion damage exceeds 0,2 mm for bowl body and bowl hood (0,5 for other parts) or if cracks have been found.

  • Page 87: Inspection For Cracks

    Disintegration hazards Always contact your Alfa Laval representative if you suspect that the depth of the damage exceeds 0,2 mm for bowl body and bowl hood (0,5 for other parts).

  • Page 88: Inspection For Erosion

    Inspect the bowl and inlet/outlet parts for erosion damages. Always contact your Alfa Laval representative if you suspect that the depth of the damage exceeds 0,2 mm for bowl body and bowl hood (0,5 for other parts).
  • Page 89 6 SERVICE, DISMANTLING, ASSEMBLY 6.4 ACTIONS BEFORE ASSEMBLY Replace parts if erosion is suspected. Disintegration hazard Erosion damage weakens parts by reducing the thickness of the material. Pay special attention to the pillars between the sludge ports in the bowl wall. Replace parts if erosion is suspected of affecting strength or function.

  • Page 90: Exchange Of Frame Feet

    6.4 ACTIONS BEFORE ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY 6.4.5 Exchange of frame feet The frame feet have to be changed occasionally due to rubber deterioration from age. When replacing the frame feet, the separator must be lifted. Follow 6.8.1 Lifting the separator, page 148.

  • Page 91: Lubrication Of Bowl Parts

    6 SERVICE, DISMANTLING, ASSEMBLY 6.4 ACTIONS BEFORE ASSEMBLY 6.4.6 Lubrication of bowl parts a Apply a thin layer of Molykote 1000, or equivalent lubrication, on all the following contact surfaces. Apply slide lacquer on the operating slide and the bowl body, guide pin and bowl hood.

  • Page 92: How To Lubricate Bowl Parts With Slide Lacquer

    Finish the treatment by lubricating the contact surfaces with Alfa Laval lubricating paste or Molykote 1000 paste. Use a well cleaned brush and rub it into the surface, do not leave any excessive paste.

  • Page 93: Check For Galling On Operating Slide And Bowl Body

    Rub the slide lacquer on the surfaces to a thin, evenly distributed layer using the sponge. f Finish the treatment by lubricating the guiding surfaces with Alfa Laval lubricating paste or Molykote 1000 paste. Use a well cleaned brush. Rub it into the surface, do not leave any excessive paste.

  • Page 94: Assembly

    6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 Assembly 6.5.1 Centrifugal clutch Assembly of the coupling. a Slip the belt pulley over the coupling hub and place them on a firm and level foundation. Disintegration Hazard If the belt pulley must be renewed, check that the new pulley has the correct diameter.
  • Page 95 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the coupling to the motor. a Clean the motor shaft and apply a thin oil film. Make sure that the b Apply lubricating paste to the tool key is in place on the threads (keep lubricated).
  • Page 96 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the coupling to the motor with optional hydraulic tool. a Clean the motor shaft and apply a thin oil film. Make sure that the key is in place on the motor shaft. b Fit the sleeve to the c Screw the holder to stud bolt.
  • Page 97 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Assembly of friction blocks Fitting the friction blocks. Guide pin a Fit the friction blocks onto the guide pins 50 Hz = 5 Friction blocks Be sure that the pins on the 60 Hz = 3 Friction blocks back of the blocks project into the grooves in the clutch hub.
  • Page 98 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the motor. a Fit a lifting sling to the motor. Use a shackle from the separator lifting tool. Weight of motor with coupling: approx. 80 kg. b Lower the motor (while supported) on to the Crush hazard separator frame.
  • Page 99 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the flat belt. Clean the inside of the frame before fitting the flat belt, and make sure that there is no oil on the belt. a Lift up the belt to the middle (centre) of the spindle pulley.

  • Page 100: Fitting The Fan

    6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the fan. a Fit the fan and tighten the screws. Fitting the clutch cover. b Tighten the screws. a Fit the clutch cover.

  • Page 101: Driving Device

    6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY 6.5.2 Driving device Assembling the bottom bearing holder (where necessary) Clean the pipe and strainer before fitting. a Fit the pipe, O-rings and strainer. Make sure to fit the pipe the right way up! b Secure the pipe with the screw secured with Loctite 222...
  • Page 102 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the bottom bearing holder. a To secure the bottom bearing holder into the frame, apply Loctite 222 on the surfaces directly above the upper O-ring. b Thread the bottom bearing holder into the frame and fit the tool into the bottom bearing housing.
  • Page 103 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the labyrinth ring. Frame a Lubricate and fit the labyrinth ring...
  • Page 104 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the labyrinth ring holder. a Lubricate and fit the O-ring b Lubricate and fit the labyrinth ring c Fit and seal the holder with Loctite 222. Fit and tighten the screws.
  • Page 105 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the ball bearing to the top bearing seat a Heat the top bearing seat in oil to +80°C above room temperature (max.125 °C). b Fit the ball bearing. Burn hazard Use protective Always fit a new bearing. gloves when Pre-lubricate before fitting.
  • Page 106 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the top bearing seat with bearing to the spindle. Puller a Heat the top bearing seat together with the bearing in oil to +80°C above room temperature Sleeve (max.125 °C). b Wipe off the spindle and fit the top bearing seat to the spindle using the sleeve and...
  • Page 107 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the top bearing housing. a Fit the axial springs to the top bearing housing. Axial springs b Carefully lower the bowl spindle. Make sure that the springs enter the recesses on the top bearing seat. c Lubricate the threads with oil before assembly.
  • Page 108 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the spindle pulley. a Turn the spindle assembly upside down. c Fit the spindle pulley b Wipe off the spindle pulley firmly on the bowl seat on the spindle and nave spindle. bore in the spindle pulley with a dry cloth.
  • Page 109 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the oil pump. b Lubricate all threads with a few drops of oil before assembly. Clean the oil pump and nozzles before assembly. c Fit the oil pump, tightening torque 150 Nm. a Apply loctite 222 and screw the two nozzles into the pump so that they lie level with the pump edge using an allen key.
  • Page 110 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the fan a Turn the spindle assembly up-side down. Ensure that the spindle is seated against the inner ring of the ball bearing. b Apply a thin layer of oil and fit the O-rings into the fan.
  • Page 111 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Lowering the spindle assembly into the frame. a Turn the assembly and remove the cap nut from the spindle. Fit the lifting tool to the spindle assembly and lift it. Crush hazard Do not rotate the spindle assembly during lifting. The spindle assembly may otherwise come loose from the lifting tool.
  • Page 112 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the flat belt. Clean the inside of the frame before fitting the flat belt, and make sure that the belt is clean. a Lift up the belt to the middle (centre) of the spindle pulley.
  • Page 113 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the neck bearing cover and deflector ring. a Apply a thin layer of oil and fit the O-rings and the seal rings Deflector ring b Fit the neck bearing cover. Neck bearing cover The guide pin on the cover should enter one of the two holes in the bearing housing.
  • Page 114 Fit a dial indicator in a support and fasten it in position as illustrated. Use the flat belt to turn the spindle. Permissible radial wobble: max. 0,04 mm. If the spindle wobble exceeds this value, contact an Alfa Laval representative. Max. 0,04 mm...
  • Page 115 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the clutch cover. b Tighten the screws. a Fit the clutch cover. Fill oil in the oil sump. The separator should be level and at a Remove the oil pin, plug and washer. standstill when oil is filled.

  • Page 116: Bowl

    6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY 6.5.3 Bowl Check for impact marks and corrosion in bowl body nave and on spindle taper a Remove any impact marks using a scraper and/or a whetstone. Disintegration hazard Impact marks may cause the separator to vibrate while running.
  • Page 117 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the operating slide. a Apply a thin layer of silicone grease and fit the rectangular ring on the operating slide and the b Fit the operating slide rectangular ring and O-ring on the bowl body. The guide pin in the bowl body should enter the hole in the operating slide (this hole is...
  • Page 118 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY a Fit the holder over the b Apply a thin layer of molykote operating slide. grease and fit and tighten new screws and washers Make sure that the flat a torque of 30 Nm + 2 Nm. surfaces of the pair- glued washers face outwards!
  • Page 119 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY a Fit the ring and screws It is very important not to refit used screws. Always fit new ones included in the Inspection kit! b Apply a thin layer of silicone grease and fit the O-ring c Fit the operating water ring.
  • Page 120 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Lifting the bowl body onto the spindle taper. a Put a drop of oil on the spindle taper. b Wipe off the spindle taper and nave bore with a dry cloth. c Turn the bowl body over. Crush hazard Support the bowl body when turning to prevent it from rolling.
  • Page 121 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting and tightening the cap nut. a To prevent the bowl body from rotating when fitting the cap nut; Fit one of the clamps (see page 53) to the bowl body b Apply a thin layer of and one of the screws for the frame molykote grease.
  • Page 122 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the discharge slide. a Apply a thin layer of silicone grease and fit the rectangular ring O-ring b Apply a thin layer of silicone grease and fit the O-ring c Fit the lifting tool and lower the discharge Crush hazard slide into the bowl.
  • Page 123 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Assembly of the disc stack. a Fit the discs one by one onto the distributor. The distributor has a guide rib for the correct positioning of the bowl discs. Always end with the disc without caulks. The number of discs may have to be increased to adjust the disc stack pressure.
  • Page 124 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the disc stack assembly to the bowl body. a Fit the lifting tool into the distributor. b Lower the disc stack into the bowl. Guide pin on bowl body The guide pin on the bowl body should face the guide rib on the distributor.
  • Page 125 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Assembling the paring tube Tolerance ring a Apply a thin layer of silicone grease to the O-rings. Fit the O-rings bearings and tolerance ring to the paring tube. Mounting the paring tube and fitting the inlet and outlet pipe. b Apply a thin layer of silicone grease a Insert the and mount the splash sealing...
  • Page 126 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the top disc. a Move the paring tube to the centre. b Lower the top disc. The guide rib on the distributor should enter one of the two larger recesses on the top disc. To avoid damaging the paring tube, turn it towards the centre...
  • Page 127 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the bowl hood. a Apply a thin layer of silicone grease and fit the O-ring b Fit the seal ring Press the ring down evenly until bulges appear. c Carefully tap down the bulges crosswise with a soft rubber mallet, until the ring is completely fitted.
  • Page 128 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the lock ring. a Place the lock ring on the bowl hood with its guide pin close to the corresponding hole in the bowl body. Make sure that the groove in the bowl body which retains the lock ring is clean.
  • Page 129 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Checking the disc stack pressure a Remove bowl hood, top disc and inlet and outlet pipe. b Add one disc to the disc stack. c Refit the disc without caulks, the top disc and bowl hood. d Fit the lock ring and fully compress the disc stack with the compressing tool.

  • Page 130: In And Outlet Device

    6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY 6.5.4 In and outlet device Fitting the frame hood a Turn the paring tube so that the frame hood can pass the paring tube. Paring tube. Make sure that the frame hood is mounted in its b Apply a thin layer of silicone grease and correct position fit the O-ring onto the frame hood...
  • Page 131 Measure the distance A. ± Add or remove height adjusting rings and washers ± according to the table. ± Frame hood Support ring Safety screw Height adjusting rings Washer Bowl hood Alfa Laval ref. 563598, rev. 0...
  • Page 132 6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Fitting the spring and arm. Spring a Fit the spring on the arm and fit the arm to the top of the paring tube end. Paring tube b Fit the spring to the pin on the frame hood and make sure that it is properly attached on...
  • Page 133 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Fitting the connection housing. a Lubricate the inlet pipe thread. b Fit the connection housing over the inlet/outlet pipe. Make sure that the screw, on top of c Lubricate the lock nut the frame hood, enters the guide threads.

  • Page 134: Unbalance Sensor (Optional)

    6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY 6.5.5 Unbalance sensor (optional) Fitting the unbalance sensor holder. a Remove the cover. Sensor holder. Sensor arm Frame Screw M8 b Fit the O-ring on the holder. Fit the screw into the holder and mount the holder into the separator frame.
  • Page 135 6 SERVICE, DISMANTLING, ASSEMBLY 6.5 ASSEMBLY Adjusting the unbalance sensor a Fit the sensor into the holder. Do not forget the nut. b Adjust the sensor so that a value of 1,5 appears on the display. Sensor Nut. + = brown or red 24 V DC J = black or white 0V = blue...

  • Page 136: Speed Sensor

    6.5 ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY 6.5.6 Speed sensor Adjusting the speed sensor a Adjust the speed sensor. Distance A = 81 + 0,1 mm. b Fit the sensor to the frame, see 4.4 Sensors, page If the sensor does not work properly, check the distance between the sensor and the spindle belt pulley.

  • Page 137: Actions After Assembly

    6.6 Actions After Assembly 6.6.1 Control of machine plates and safety labels Alfa Laval ref. 561498 rev. 4 Check that the following signs are attached. Space for additional label for numbering of separator and function Space for label indicating representative.
  • Page 138 6.6 ACTIONS AFTER ASSEMBLY 6 SERVICE, DISMANTLING, ASSEMBLY Check legibility. Following texts should be read on the labels. Separator Manufacturing serial No. / Year Product No. In and outlet device Bowl Machine bottom part Max. speed (bowl) Direction of rotation (bowl) Speed motor shaft El.

  • Page 139: Oil Change

    6 SERVICE, DISMANTLING, ASSEMBLY 6.7 OIL CHANGE 6.7 Oil Change The separator should be level and at standstill when oil is filled or the oil level is checked. 6.7.1 Lubricating oil Do not mix different oil brands. Always use clean vessels when handling lubricating oil. Great attention must be paid not to contaminate the lubricating oil.

  • Page 140: Check Oil Level

    6.7 OIL CHANGE 6 SERVICE, DISMANTLING, ASSEMBLY 6.7.2 Check oil level Remove the oil pin and make sure that the oil level is above the lower hole in the oil pin. 6.7.3 Oil change procedure Remove the oil pin, plug and washer. Place a vessel under the drain plug.

  • Page 141: Lubrication Chart

    6 SERVICE, DISMANTLING, ASSEMBLY 6.7 OIL CHANGE 6.7.4 Lubrication chart Alfa Laval ref. 567329-02, rev. 1 Bowl (3), Rubber seal rings (4) Electric motor (6) Bowl spindle taper (2) Buffers (3) Plug thread (7) Bowl spindle and bearings (1) Friction clutch bearings (5)
  • Page 142 6.7 OIL CHANGE 6 SERVICE, DISMANTLING, ASSEMBLY Check and pre-lubricate new spindle bearings and bearings that have been out of service for six Check the oil level before start. months or longer. Top up when necessary. If the ambient temperature is below 25 °C at start-up, Do not overfill.

  • Page 143: Lubricants

    The data in below tables is based on supplier information in regards to lubrication properties. Trade names and designations might vary from country to country, contact your local supplier for more information. Brands with Alfa Laval article numbers are approved and recommended for use. Pastes: Manufacturer Designation...
  • Page 144 6.7 OIL CHANGE 6 SERVICE, DISMANTLING, ASSEMBLY Silicone grease for rubber rings: Manufacturer Designation Hygienic comment Alfa Laval No. Dow Corning (Molykote) 111 Conform to the FDA 539474-02 (100 g) (Compound) regulations (21 CFR 178.3570) for occasional 539474-03 (25 g) food contact.
  • Page 145 6 SERVICE, DISMANTLING, ASSEMBLY 6.7 OIL CHANGE Greases for ball and roller bearings: Always follow the specific recommendation for lubrication as advised by the manufacturer. Manufacturer Designation Hygienic comment Energrease MP-MG2 Energrease LS2 Energrease LS-EP2 Castrol APS 2 Spheerol EPL 2 Chevron Chevron Dura-Lith Grease EP2 Texaco Multifak AFB 2...

  • Page 146: Lubricating Oils

    6.7 OIL CHANGE 6 SERVICE, DISMANTLING, ASSEMBLY 6.7.6 Lubricating oils Alfa Laval ref. 567330-01, rev. 4 Paraffinic mineral lubricating oil, category (ISO-L-) HM 68. Viscosity grade (ISO-3448/3104) VG 68. The oil shall follow the requirements in one of the standards below.
  • Page 147 6 SERVICE, DISMANTLING, ASSEMBLY 6.7 OIL CHANGE * These oils should be used at cold start, i.e. when the ambient temperature is below 20 All oils can be used at ambient temperatures above 20 The list of recommended oil brands is not complete. Other oil brands may be used as long as the follow the above standards and have equivalent high quality as the brands recommended.

  • Page 148: Lifting Instructions

    6.8 LIFTING INSTRUCTIONS 6 SERVICE, DISMANTLING, ASSEMBLY 6.8 Lifting instructions Alfa Laval ref. 561708, rev. 2 6.8.1 Lifting the separator Weight to lift 320 kg Sling length: Min. 750 mm Fasten all four bolts. Tightening torque 35 - 45 Nm...

  • Page 149: Lifting The Bowl

    6 SERVICE, DISMANTLING, ASSEMBLY 6.8 LIFTING INSTRUCTIONS Use two lifting slings to lift the separator. Total length of each loop: minimum 1,5 metres. When lifting and moving the separator, follow normal safety precautions for lifting large heavy objects. Crush hazards A falling separator can cause accidents resulting in serious injury and damage.
  • Page 150 6.8 LIFTING INSTRUCTIONS 6 SERVICE, DISMANTLING, ASSEMBLY...

  • Page 151: Fault Finding

    SEPARATOR MANUAL 7 FAULT FINDING 7 Fault Finding These fault finding instructions are for the separator only. If a fault occurs, study the System Documentation fault finding section (if applicable). 7.1 Mechanical Functions 7.1.1 Separator vibration Disintegration hazards If excessive vibration occurs, stop separator and keep bowl filled with liquid during rundown.

  • Page 152: Smell

    7.1 MECHANICAL FUNCTIONS 7 FAULT FINDING 7.1.2 Smell Cause Corrective action Normal occurrence during start while the friction None. blocks are slipping. If smell continues when separator is at full speed, stop the separator and replace friction blocks. Oil level in oil sump too low. Check oil level and add oil if necessary.

  • Page 153: Starting Power Too High

    7 FAULT FINDING 7.1 MECHANICAL FUNCTIONS 7.1.6 Starting power too high Cause Corrective action Incorrect transmission parts (60 Hz belt pulley for 50 Hz power supply). Stop and change the belt transmission to suit the power supply frequency. Wrong direction of rotation. Change electrical phase connections to the motor.

  • Page 154: Separating Functions

    7.2 SEPARATING FUNCTIONS 7 FAULT FINDING 7.2 Separating Functions 7.2.1 Bowl opens accidentally during operation Cause Corrective action Strainer in the operating water supply is clogged. Clean the strainer. No water in the operating water system. Check the operating water system and make sure the valve(s) are open.

  • Page 155: Bowl Fails To Close

    7 FAULT FINDING 7.2 SEPARATING FUNCTIONS 7.2.4 Bowl fails to close Cause Corrective action Nozzle in operating slide clogged. Clean nozzle. Hoses reversed. Adjust. Rectangular ring in discharge slide is defective Renew rectangular ring. Valve plugs in operating slide missing or defective. Renew valve plugs.
  • Page 156 7.2 SEPARATING FUNCTIONS 7 FAULT FINDING...

  • Page 157: Technical Reference

    8 Technical Reference 8.1 Product description Alfa Laval ref. 592632, rev. 0 & 592634, rev. 0 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 158: Technical Data

    8.2 TECHNICAL DATA 8 TECHNICAL REFERENCE 8.2 Technical Data Alfa Laval ref. 561760, rev. 9 Subject Value Unit General technical data: Motor power 50 Hz / 60 Hz 7,5/8,6 Gear ratio 292 / 82 50Hz Gear ratio 243 / 82...

  • Page 159: Connection List

    8 TECHNICAL REFERENCE 8.3 CONNECTION LIST 8.3 Connection List Alfa Laval ref. 561759 rev. 6 No. Description Requirements/limits Inlet for process liquid • Allowed temperature Min. 0 °C, max. 100 °C • Max allowed density See demand specification • Allowed flow...
  • Page 160 8.3 CONNECTION LIST 8 TECHNICAL REFERENCE Drain of frame top section, lower Motor for separator ± Allowed frequency variation: ± (momentarily during 5 seconds Speed sensor for bowl spindle See page 165. • Type Inductive promixly switch • Supply voltage, nominal •...

  • Page 161: Interface Description

    8 TECHNICAL REFERENCE 8.4 INTERFACE DESCRIPTION 8.4 Interface Description Alfa Laval ref. 564834 rev. 3 8.4.1 Scope This document gives information, requirements and recommendations about operational procedures and signal processing for safe and reliable operation of the separator. It is intended to be used for designing auxiliary equipment and control system for the separator.

  • Page 162: Definitions

    8.4 INTERFACE DESCRIPTION 8 TECHNICAL REFERENCE 8.4.3 Definitions For the purpose of this document, the following definitions apply: • Synchronous speed: The speed the machine will attain when it is driven by a three phase squirrel-cage induction motor and there is no slip in the motor and the drive system.

  • Page 163: Description Of Separator Modes

    8 TECHNICAL REFERENCE 8.4 INTERFACE DESCRIPTION 8.4.5 Description of separator modes For control purposes the operation of the separator should be divided into different modes. The normally used modes are described below but other modes might exist. It is assumed that: •...

  • Page 164: Remote Start

    8.4 INTERFACE DESCRIPTION 8 TECHNICAL REFERENCE Stopping means: • The power to the separator motor is off. • The bowl is rotating and decelerating. • STOPPING is a collective denomination for a number of sub modes which e.g. can be: –...
  • Page 165 8 TECHNICAL REFERENCE 8.4 INTERFACE DESCRIPTION There shall be an emergency stop circuit designed according to EN 418 and a power isolation device according to EN 1037. There shall be a start button close to the separator that shall be used for first start after assembly of the separator.
  • Page 166 8.4 INTERFACE DESCRIPTION 8 TECHNICAL REFERENCE Signal processing in RUNNING: • If the speed exceeds ”Bowl speed, synchronous” in Technical Data with more than 5 % for a period longer than 1 minute or momentarily during maximum 5 seconds more than 10 % the separator shall be stopped automatically by NORMAL STOP and a high speed alarm shall be given.
  • Page 167 8 TECHNICAL REFERENCE 8.4 INTERFACE DESCRIPTION • STAND STILL shall be indicated when no pulses are detected within 30 seconds. • Stopping the separator when alarm for speed monitoring system failure is active, shall cause a timer controlled stop. (See ”Stop time”...
  • Page 168 8.4 INTERFACE DESCRIPTION 8 TECHNICAL REFERENCE • If vibrations exceed the first alarm level an alarm should be given. Vibrations of this magnitude will reduce the expected life time of the bearings and should therefore be eliminated. • If vibrations exceed the second alarm level the separator shall be stopped automatically by SAFETY STOP.
  • Page 169 8 TECHNICAL REFERENCE 8.4 INTERFACE DESCRIPTION 760 Cover interlocking switch. (optional) The separator is equipped with a interlocking switch to detect if the cover is mounted. Signal processing in STAND STILL: • The circuit is closed when the cover of the separator is mounted.
  • Page 170 8.4 INTERFACE DESCRIPTION 8 TECHNICAL REFERENCE Processing in NORMAL STOP or EMERGENCY STOP: • Could be closed or open but the bowl should be filled unless the stop is initiated in STARTING. Processing in SAFETY STOP: • Could be closed or open but the bowl shall be filled unless the stop is initiated in STARTING.
  • Page 171 8 TECHNICAL REFERENCE 8.4 INTERFACE DESCRIPTION Signal processing in CLEANING: • Automatic discharges shall be initiated by timer or CIP-control system. Signal processing in NORMAL STOP: • Discharges should not be made. • Below 85 % of synchronous bowl speed no water supply may be made.

  • Page 172: Demand Specification Water

    6,5 < pH < 9 Bicarbonate content (HCO3) min. 70mg HCO per litre, which corresponds to 3,2 °dKH. Alfa Laval accepts no liability for consequences arising from unsatisfactorily purified operating water supplied by the customer.

  • Page 173: Drawings

    8.6 DRAWINGS 8.6 Drawings 8.6.1 Basic size drawing Alfa Laval ref. 561693 rev. 5 Connection house, with connections 201, 220 and 221, turnable in 60° steps all around. All connections to be installed non-loaded and flexible All dimensions are nominal. Reservation for individual deviations due to tolerances.

  • Page 174: Foundation Drawing

    8.6 DRAWINGS 8 TECHNICAL REFERENCE 8.6.2 Foundation drawing Alfa Laval ref. 561726 rev. 1 Total static load max. 4 kN. A Centre of separator bowl. B Holes for foundation bolts (8x). C Centre of motor. D Min. lifting capacity required during service: 300 kg.

  • Page 175: Interconnection Diagram

    8 TECHNICAL REFERENCE 8.6 DRAWINGS 8.6.3 Interconnection diagram Alfa Laval ref. 561786 rev. 5 Interlocking switch (frame top part) Unbalance sensor (position trans. for bearing holder). Speed sensor (bowl speed). Junction box Wiring without junction box Wiring of connector “X”:...

  • Page 176: Electric Motor

    8.6 DRAWINGS 8 TECHNICAL REFERENCE 8.6.4 Electric motor Alfa Laval ref. 561356 rev. 8 Knockout openings for M25+M20 cable glands Cast lifting lugs on on both sides. both sides. Note! Cable glands delivered attached to motor. 4 holes M10x18 External earthing bolt var.
  • Page 177 Rated output (kW) valid for temp. rise max. Cast iron bearing shield at N-end. The motors can be provided with space heaters for 110V or 220V, 25W as option. For complete information about motor variants, please contact your Alfa Laval representative.
  • Page 178 8.6 DRAWINGS 8 TECHNICAL REFERENCE...

  • Page 179: Installation

    9 Installation 9.1 Introduction These installation specifications are valid for the S 831 & S 836 separator. The installation instructions are specifications, which are compulsory requirements. Any specific requirements from classification societies or other local authorities must be followed. If the specifications are not followed, Alfa Laval can not be held responsible for any malfunctions related to the installation.

  • Page 180: Upon Arrival At The Storage Area

    9.2 UPON ARRIVAL AT THE STORAGE AREA 9 INSTALLATION 9.2 Upon Arrival At The Storage Area Ensure that the separator delivered is suitable for the application. 9.2.1 Transport a When lifting the separator, make sure that tools and lifting devices are fastened securely. See chapter 6.8.1 Lifting the separator, page 148.

  • Page 181: Protection And Storage Of Gods

    9 INSTALLATION 9.2 UPON ARRIVAL AT THE STORAGE AREA 9.2.2 Protection and storage of gods a The separator must be stored indoors at 5 - 55 °C, if not delivered in a water-resistant box, designated for outdoor storage. The following protection products are b If there is a risk for water condensation, the recommended: equipment must stand well ventilated and at...

  • Page 182: Planning Of Installation

    9.3 PLANNING OF INSTALLATION 9 INSTALLATION 9.3 Planning of Installation 9.3.1 Important measurements Important measurements are: - minimum lifting height for lifting bowl parts - shortest distance between driving motor and wall - space for control and operation - free passage for dismantling and assembly - space for maintenance work - space on floor for machine parts during maintenance work...

  • Page 183: Maintenance Service

    9 INSTALLATION 9.3 PLANNING OF INSTALLATION 9.3.2 Maintenance service A work bench should be installed in the separator room. Hot water, compressed air and diesel oil should be available near the work bench to make maintenance work easier. An overhead hoist with capacity of 300 kg is required for transport of bowl parts to the working bench.

  • Page 184: Connections To Surrounding Equipment

    9.3 PLANNING OF INSTALLATION 9 INSTALLATION 9.3.3 Connections to surrounding equipment Local safety regulations If the local safety regulations prescribe that the installation has to be inspected and approved by responsible authorities before the plant is put into service, consult with such authorities before installing the equipment and have the projected plant design approved by them.

  • Page 185: Storage At Out Of Operation

    9 INSTALLATION 9.4 STORAGE AT OUT OF OPERATION 9.4 Storage at out of operation If the separator is out of operation for more than 1 month: Lift out the bowl. Protect the spindle taper from corrosion by lubricating it with oil. Keep the separator and bowl well stored, dry and protected from mechanical damage.
  • Page 186 9.5 BEFORE START-UP 9 INSTALLATION...

This manual is also suitable for:

S 836

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