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Mi Swaco 414 Installation, Operation & Maintenance Manual

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Installation, Operation & Maintenance Manual
414
CENTRIFUGE
UL Approved
Worldwide Headquarters
P.O. Box 42842
Houston, Texas 77242-2842
Tel: 281-561-1300
Fax: 281-561-1441
www.miswaco.com
E-Mail: questions@miswaco.com
Manual Part #: 90-90-060 Rev. C

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  • Page 1 Installation, Operation & Maintenance Manual CENTRIFUGE UL Approved Worldwide Headquarters P.O. Box 42842 Houston, Texas 77242-2842 Tel: 281-561-1300 Fax: 281-561-1441 www.miswaco.com E-Mail: questions@miswaco.com Manual Part #: 90-90-060 Rev. C...
  • Page 2 DISCLAIMER Recommendations made by M-I SWACO are advisory only. M-I SWACO shall not be liable under any guarantees or warranties, expressed or implied, in any manner or form, AND ALL WARRANTIES, EXPRESSED OR IMPLIED, ARE HEREBY SPECIFICALLY EXCLUDED, and M-I SWACO shall not be liable for the failure to obtain any particular results from the use of any recommendation made by it or from the use of this material.

  • Page 3: Table Of Contents

    Table of Contents Page Introduction Safety Precautions Section 1 Unit Description Centrifuge Components Specifications Rotating Assembly Components Safety Components Bowl and Conveyor Speeds Step Sheaves Section 2 Installation Transportation and Handling Centrifuge Mounting Electrical Installation Feed Pump Liquid Feed and Discharge Solids Discharge Startup and Shutdown Section 3...
  • Page 4 5.2.11 Assembly – Small Conveyor Bearing Bowl 5.3.1 Level Regulating Discs 5.3.2 Solids Discharge Bushings Conveyor 5.4.1 Shimming 5.4.2 Installation Section 6 Diagrams and Parts List 414 Centrifuge Bowl Assembly Gearbox End Assembly Feed End Assembly G.S. Coupling Frame Vessel Conveyor Shim Selection 10.

  • Page 5: Introduction

    Failure to do so may cause injury to personnel, damage to the equipment or reduced performance. The Swaco 414 Centrifuge is known as a decanting type separator. A decanter is a centrifugal separator having a horizontal axis of rotation. A process liquid or slurry is supplied to the rotating bowl where the solids are separated from the liquid phase.

  • Page 6: Safety Precautions

    The following general precautions should be strictly followed to avoid damage to property and/or death to personnel. Do not allow personnel to maintain, install, or operate the 414 Centrifuge until they have read this manual and understood safety requirements. Do not operate the centrifuge until it is properly mounted.

  • Page 7: Unit Description

    Section 1 Unit Description Centrifuge Components 1.1.1 The centrifuge bowl is the outer member of the rotating assembly and is composed of one cylindrical section and a conical section. The end piece on the cylindrical end has ports through which the liquid flows out. Semi-dry solids are discharge through ports in the small end of the conical section.
  • Page 8 1.1.3 The planetary gear box, is fitted on the hollow shaft at the cylindrical end of the bowl. It drives the conveyor by means of a shaft going through the hollow shaft of the bowl. On the end of the gear box opposite the bowl, is a small shaft.
  • Page 9 1.1.5 The vessel is a stainless steel case mounted on the frame that completely encloses the bowl. It is divided into compartments that divert the liquid and solids discharge to their respective outlets. The semi-circular cover is hinged to allow easy access to the bowl for inspection and maintenance. Figure 5 (Vessel) 1.1.6 A feed tube is shown in Figure 6.
  • Page 10 1.1.7 The belt guards on the 414 Centrifuge are made so that access to belts and G.S. Torque limiting coupling is through the split door on the side. The upper half of the door folds down for belt inspection and tightening and resetting the G.S.

  • Page 11: Specifications

    Specifications Length 95.5 inches (2426 mm) Width 70 inches (1778 mm) Height 34 inches (864 mm) Weight 3969 lbs. (1804 kg.) Power Required 460 Vac 60 Hz 3 Ph 50 Amps Current limiting fused Bussmann LPS 50 or equivalent (Other voltages and frequency available on special order) Motors 25 Hp Main Drive...
  • Page 12 The centrifuge rotating assembly consists of the bowl, the conveyor and the planetary gearbox. All these items are described in Paragraph 1.1.1, 1.1.2 and 1.1.3. The following safety components are incorporated in the Swaco 414 Centrifuge 1.4.1 Torque Limiter The torque limiter is a combination of mechanical and electrical controls. The small sunwheel shaft has a spring loaded coupling (G.S.

  • Page 13: Bowl And Conveyor Speeds

    Step sheaves having two pitch diameter sizes each on the main drive motor and bowl sheaves permit operation of the 414 CENTRIFUGE at 1900, 2500 and 3200 rpm’s. The bowl speed is determined by the combination of sheave sizes selected on the bowl and motor. The motor mount is made to allow the motor and sheave to move a full sheave width for proper alignment to obtain the full range of bowl speeds.
  • Page 14 The figure below provides the combination of sheave sizes to drive the Centrifuge bowl at the speed indicated. 60 Hz 1750 rpm motor: Description Part Number Size Bowl Sheave 96-10-416 4-3V-5.6/4-3V-7.4 Bowl Motor Sheave 96-10-414 4-3V-10.6/4-3V-8.0 Back Drive Motor Sheave 05-79-096 3-3V-10.6 Main Drive Belt 05-06-120 3VX900 Main Drive Belt 05-06-116...

  • Page 15: Installation

    Section 2 Installation Transportation and Handling 2.1.1 The pillow block bearings are subject to damage from shock and vibration during transportation and handling. To prevent this, the pillow block bearing should be preloaded using wedge blocks shown in Figure 8 Figure 8 (Wooden Wedge Blocks)

  • Page 16: Centrifuge Mounting

    Centrifuge Mounting The 414 Centrifuge must be mounted above the ground to facilitate solids removal. For recovery of weight material the solids discharge outlet should be located over a well stirred area of the mixing pit. A slide attached from the solids outlet may be necessary to route solids to the mixing pit.

  • Page 17: Liquid Feed And Discharge

    2.4.3 Suction and discharge lines on the feed pump should be sized to minimize head loss due to line friction. 2.4.4 A water line should be connected between the pump and the feed tube for washing the bowl and conveyor prior to shutdown. Liquid Feed and Discharge 2.5.1 The line feeding mud to the centrifuge should terminate with a male 2"...

  • Page 18: Inspection And Maintenance

    2.7.2 Before shutdown of the 414 Centrifuge, it is necessary to flush the bowl with water. Shut off the feed pump. Close the mud suction valve. After all conveyable solids have cleared the bowl, open the water line which tees into the pump discharge line.

  • Page 19: Lubrication

    guard to see if it is closed when set against G.S. coupling, Figure 12, and open when coupling is disengaged, Figure 12. Lubrication 3.2.1 Lubrication Bearings The pillow block and conveyor bearings should be lubricated every 100 hours of operation. See Figure 9 for location of grease fittings. Grease vent holes located behind pillow block housing and in gearbox cover nearest the bowl, are shown in Figure 9.
  • Page 21 3.2.2 Lubrication of Gearbox The 350 KPM gearbox contains two treaded plugs. The two plugs are magnetic and are removed for oil draining and filling. The magnetic plugs attract metallic particles, in the lubricating oil. The oil level in the gearbox should be checked before centrifuge operation. Remove inspection plate on side of gearbox (See Figure 10b).
  • Page 22 3.2.3 Lubrication of gearbox on units with serial numbers smaller than 1000 Remove gearbox guard exposing entire gearbox. The gearbox contains two threaded plugs. The two plugs are magnetic and are removed for oil draining and filling. The magnetic plugs attract metallic particles, in the lubricating oil. The oil level in the gearbox should be checked before centrifuge operation.
  • Page 23 3.2.3 Changing gearbox lubricant The gearbox oil should be changed after the first 150 hours of operation of a new gearbox and at least once a month of normal running. A large accumulation of metallic particles on the magnetic plugs indicates the gearbox oil needs changing.

  • Page 24: Cleaning

    3.5.2 The following procedure for belt tensioning should be used starting when a new 414 Centrifuge is put into service or anytime belts are replaced. It is important that the belts are correctly tensioned. A belt that slips on its pulley is exposed to abnormal wear.

  • Page 25: Coupling

    never force them over the side of the pulley. Always loosen the motor to install them. Over tensioning of belts may cause premature failure. When one or more of the belts is worn out, put on a COMPLETE set of new belts. A good way to check belt tension is to strike the belts with a clench fist.
  • Page 26 The 414 Centrifuge utilizes a spring loaded coupling to limit this torque. The torque is exerted on this coupling which is mounted next to the gearbox sheave. Should the torque exceed a preset limit, (50-60 ft/lb. (74.4-89.3 km)) the coupling will disengage and trip a limit switch (See Item 224, Diagram 1).
  • Page 27 3.6.1 Resetting the G.S. Coupling (Refer to Figures 12c and 12d) Insert a steel bar into a hole in the coupling and a bar in a slot in the driver. Rotate the bars in opposite directions until the steel balls return to original position.
  • Page 28 3.6.3 Adjusting G.S. Coupling release force Some adjustment is possible by adding or removing spacer washers (Item 98, Diagram 5). Adding washers increases disengagement force and removing decreases force. If proper functioning and force readings cannot be obtained by washer adjustment, replace spring washer group, eleven (11) pieces, (Item 97, Diagram 5).

  • Page 29: Fluid Coupling

    Vibration detection switch The high speed rotating assembly of the 414 Centrifuge requires near perfect balance for minimum vibration. Should an imbalance cause excessive vibration, the main drive motor and fee pump will be shut off by a vibration detection switch, See (Item 223, Diagram 1).

  • Page 30: Troubleshooting Chart

    Section 4 Troubleshooting Chart Problem Cause Remedy Motors do not start 1. No power to unit 1. Restore power 2. Vibration switch not reset 2. Reset vibration switch 3. Limit switch on G.S. Coupling Section 1.3.1 tripped 3. Reset limit switch Section 1.3.1 Startup and shutdown 1.

  • Page 31: Section 5 Repair And Overhaul

    Section 5 Repair and Overhaul Rotating assembly removal The following procedure is for removal of the rotating assembly. Remember the bearing housings are aligned for each centrifuge frame and should never be interchanged. 1. Open vessel cover. 2. Remove the following parts: a.
  • Page 32 TAPERED ALIGNMENT PINS ARE USED TO ASSURE PERFECT ALIGNMENT OF BEARING HOUSINGS, IF BEARING HOUSINGS HAVE BEEN REMOVED. ALWAYS INSERT THE ALIGNMENT PINS BEFORE TIGHTENING BEARING HOUSING BOLTS.

  • Page 34: Disassembly Gearbox

    The following sections discuss the dismantling of the rotating assembly. Parts illustrated in the figures are numbered and parenthesized in the instructions. 5.2.2 Removal The procedure for removing the gearbox is as follows: (Refer to Figure 15 and 16 for illustrations) 1.
  • Page 35 3. Remove the flange (5) facing the gearbox, using the puller if necessary. Figure 17b illustrates flange removal. 4. The labyrinth ring (10), roller bearing outer race (13), and spacing ring (15) can be removed by hand. The roller bearing inner race can be removed with the special puller tool (P/N: 96-01-036) as shown in Figure 18.

  • Page 36: Conveyor Removal

    5. The fat valve disc (17) is removed after removing the bearing inner race. If the fat valve disc has seized to the end piece (27), remove by using the puller as shown in Figure 19. The claws of the tool should seat against the bearing removal tool.

  • Page 37: Assembly Gearbox End

    5.2.5 Assembly gearbox end Assemble the parts in sequence as shown in Figure 16. Observe the following when assembling. The lip seal ring (30) of the large conveyor bearing must be mounted on the end piece pivot before mounting the roller bearing inner race (31). Apply ball bearing grease to the lip seal ring.

  • Page 38: Assembly - Large Conveyor Bearing

    Remove the screw (38), and set screw plugs (36) from the bearing holder (37). The bearing holder is removed by screwing two jacking screws (P/N: 84-01- 460) into the screw plug threads (36) and backing off. The o-ring (14), roller bearing (31), and snap ring (40) can now be removed.

  • Page 41: Disassembly Feed End

    5.2.8 Disassembly Feed End The procedure for disassembling the feed end of the rotating assembly is as follows. Refer to Figure 22 Remove the screws (64) holding the end piece (67) to the bowl. The end piece is removed from the bowl by screwing two of the removed screws into the screw plug (65) threads and backing off the end piece.

  • Page 42: Assembly Feed End

    Remove the fat valve disc (17), spacing ring (75), ball bearing (77) and spacing sleeve (81) with puller as shown in Figure 25. The claws of the puller should rest against the bearing removal tool (P/N: 96-01-035). Difficulty in removing these parts indicates the spacing sleeve (81) has seized. If so, pull spacing sleeve off by inserting the puller claws in the groove of the spacing sleeve.

  • Page 43: Assembly Small Conveyor Bearing

    Remove screws (58). Remove the tapered lock ring (57). Using the jack screws (P/N: 96-01-011) ease out the ejector disc (52). If necessary the protecting tube (50) can be removed. Inspect parts carefully and replace if necessary. 5.2.11 Assembly Small Conveyor Bearing The procedure for assembling the small conveyor bearing is as follows.

  • Page 44: Bowl

    The level regulating discs are shown in Figure 28. The discs are mounted to the end piece by three screws. In the 414, discs are used to give a pool radius of 4.52 inch (115 mm) or 4.92 inch (125 mm) and are so marked.

  • Page 45: Solids Discharge Bushings

    5.3.2 Solids Discharge Bushings The discharge bushings should be replaced before wear is allowed on the bowl. To remove discharge bushings use a soft drift and a hammer to tap out as shown in Figure 29. Replace bushings in pairs only. Replace the defective bushings and the one opposite To install discharge bushings, clean outer surface of new bushings and inner surface seats of the bowl.

  • Page 46: Conveyor

    Conveyor 5.4.1 Shimming When installing a new conveyor in a bowl it is necessary to obtain the correct clearance between the edge of the conveyor flights and the bowl, in the conical end. It is also necessary to obtain the correct axial clearance between the bowl and the conveyor.

  • Page 47: Section 6 Diagrams And Parts List

    Install lockwasher, Item 2, and the round nut, Item 1, Figure NOTE: The flange face that bolts to the gearbox must run true to prevent any gearbox runout. Section 6: Diagrams and Parts Lists 414 Centrifuge Bowl Assembly Gearbox End Assembly Feed End Assembly G.S. Coupling...
  • Page 48 Diagram 1 (414 Centrifuge)
  • Page 49 Washer, Flat Cad Plt. 5/16” 13-45-086 Washer, Flat Cad Plt. ¼” 13-45-389 Washer, Lock Cad Plt. ¼” 13-45-212 Washer, Lock Cad Plt. 3/8” 13-05-571 Nut, Hex Cad Plt. ¼”-20 13-05-391 Nut, Lock Cad Plt. 3/8”-16 Diagram 1 (414 Centrifuge Parts List)
  • Page 50 Motor, 230/460V 60C 25 Hp 1750 rpm 75-69-011 Switch, Limit x Plsn Proff #LSXA3K 96-09-252 Box Hr Meter w/ Mounting Posts 24-80-050 Meter, Elapsed Time, 60-260V (AC-DC) 96-12-018 Motor, 230/460V 60C 7.5 Hp 1750 rpm Diagram 1 (414 Centrifuge Parts List)
  • Page 52 Overflow Dam 115m 96-10-309 Bowl Section, Cylindrical 84-01-460 SHCS, SS, M10 x 40 mm 96-10-307 Bowl Section, Conical 14-93-335 SHCS, SS, M8 x 25 mm Diagram 2 (414 Centrifuge Bowl Assembly Parts List) * = 96-10-248 Overflow Dam 125 mm (SPECIAL ORDER)
  • Page 53 Diagram 3 (414 Centrifuge Gearbox End Assembly)
  • Page 54 SHSS, SS, M10 x 12 mm 96-10-377 Bearing Holder 84-01-454 SHSS, SS, M8 x 20 mm 84-01-431 Snap Ring 96-10-406 Thrust Ring 84-01-023 Ball Bearing SK 7316B 96-10-378 Ball Bearing Holder Diagram 3 (414 Centrifuge Gearbox End Assembly Parts List)
  • Page 55 Diagram 4 (414 Centrifuge Feed End Assembly)
  • Page 56 84-01-476 SHSS, SS, M5 x 8 mm 96-10-351 Deflector 96-10-405 Spacing Ring 84-01-020 Ball Bearing SKF 6218 M/C4 96-10-144 Bearing Housing 96-10-400 Ring Labyrinth 96-10-425 Spacing Sleeve 96-10-416 Step Sheave (4-3V-5.6/4-3V-7.4) Diagram 4 (414 Centrifuge Feed End Assembly Parts List)
  • Page 57 Index Swaco Description Qty. Part No. 84-01-269 84-01-860 Lock Washer 90 mm 84-01-300 Round Nut 90 mm 84-01-371 Dowel , SS, M5 x 18 mm Diagram 4 (414 Centrifuge Feed End Assembly Parts List)
  • Page 58 Diagram 5 (414 Centrifuge G.S. Coupling 350 KPM Gearbox)
  • Page 59 84-01-036 Ball Bearing 96-10-369 Ring Spacer 96-10-415 Sheave 96-10-365 Adapter Sheave 84-01-369 96-10-130 Gearbox 84-01-485 SHCS, SS, M8 x 30 mm * Refer to Section 3.6.3 for quantity used. Diagram 5 (414 Centrifuge G.S. Coupling 350 KPM Gearbox Parts List)
  • Page 60 Diagram 6 (414 Centrifuge Frame)
  • Page 61 84-01-292 Nut Hex Plt. M12 84-01-466 SHCS, PLT., M16 x 65 mm 84-01-872 Clamping Washer 96-10-312 Welded Bracket 14-07-529 SHCS, SS, 1/2-13 NC x 2-3/4 84-01-447 SHCS, SS, M10 x 30 mm 96-10-383 Diagram 6 (414 Centrifuge Frame Parts List)
  • Page 62 Diagram 7 (414 Centrifuge Vessel)
  • Page 63 SHCS, SS, M16 x 30 mm 119a 96-10-106 Vessel 119b 14-07-467 SHCS, SS, 5/8-13 x 2-3/4 84-01-464 SHCS, SS, M12 x 35 mm 96-10-396 Protecting Cover 96-10-385 Hinge Pin 13-05-404 Nut Lock SS 5/8-13 NC Diagram 7 (414 Centrifuge Vessel Parts List)
  • Page 64 Diagram 8 (414 Centrifuge Conveyor)
  • Page 65 Index Swaco Description Qty. Part No. 96-10-337 414 Conveyor (110 mm) Diagram 8 (414 Centrifuge Conveyor Parts List)
  • Page 66 Diagram 9 (414 Centrifuge, Method for determing adjusting shims)
  • Page 67 Calculate the difference (9.4 + d) - e mm and find in Table 2 the adjusting shim or shims to be placed at position (t) between the conveyor small end bore and the bearing arrangement to give the right axial space between conveyor and bowl. Diagram 9 (414 Centrifuge Method for determing adjusting shims)
  • Page 68 Diagram 10 (414 Centrifuge 350 KPM Gearbox)
  • Page 69 Pivot, Gear #11 84-01-046 Bearing, Ball SKF 16004 96-10-373 Holder, Gear #11 84-01-333 O-ring 96-10-342 Cover, Drive Shaft End 84-01-485 SHCS, M8 x 30 mm 84-01-025 Bearing, Ball SKF 16017 96-10-412 Shaft, Drive Diagram 10 (414 Centrifuge 350 KPM Gearbox Parts List)
  • Page 70 Diagram 11 (414 Centrifuge Electrical Assembly)
  • Page 71 Box HR Meter w/mounting Posts 24-80-050 Meter, Elapsed Time, 60-260V (AC-DC) 96-10-361 Box, Curlee 75-73-290 Switch, Push Button Start XPRF (Reference) 69-12-018 Motor, 230/460V 60C 7.5 Hp 1750 rpm 96-10-391 Lid (Hour Meter) Diagram 11 (414 Centrifuge Electrical Assembly Parts List)
  • Page 72 Diagram 12 (414 Centrifuge Wiring Diagram)
  • Page 73 Compound, Sealing C-H # CHICO-A 80-06-220 Compound, Sealing Fiber C-H # CHICO-X 80-87-250 Tie, Cable, 1/16" x 1-1/8"" T&B #YT-542M 80-87-050 Tape, Elec. Vinul 3/4" x 66' x 0.0085" Thick Scotch 88 39-95-147 Waterproofing Tape (Rubber) Diagram 12 (414 Centrifuge Wiring Diagram Parts List)
  • Page 74 Diagram 13 (414 Centrifuge Cabling)
  • Page 75 Diagram 14 (414 Centrifuge Electrical Schematic)
  • Page 76 Diagram 15 (414 Centrifuge Typical Feed Pump Starter Electrical Schematic)
  • Page 77 Diagram 16 (414 Centrifuge Special Tools) The following special tools are needed to perform repair and maintenance on the 414 Centrifuge...
  • Page 78 Special Tools Continued...

  • Page 79: Section 7 Appendix A. Gyrol Fluid Coupling

    Section 7 Appendix Appendix A Gyrol Fluid Coupling (Fluid Couplings on Older Units) Appendix B Conveyor Wear Recording Appendix C Jolly Couplings Hydromechanical Appendix D Turbostart Fluid Coupling...
  • Page 82 Fit the stepped key supplied into the motor shaft and mount the fluid coupling on the motor shaft, ensuring that the key and shaft key are correctly aligned. Move the coupling along the motor shaft as far as it will go. First tighten the lone set screw opposite the key on to the motor shaft, then tighten the two short set screws alternately to close input shaft evenly on to the motor shaft.
  • Page 83 Unit Dismantling Instructions Remove the filter plugs. Drain the oil from the coupling. Fully unscrew the three socket set screws and remove the collar from the input shaft. Unscrew the three hex head set screws and spring washers and remove the pulley sheave from the hub.
  • Page 84 Maintenance Instructions Checking tightness of bolts after the fluid coupling has been in service for a few weeks, check that the screws in the collar, pulley sheave, hub and bearing housing are tight. If necessary, tighten the cap screws to the specified torque valves.
  • Page 86 Index Swaco Part Description Qty. Casing Weld Assembly 31-70-002 Bearing Ring 31-70-003 Ball Bearing 31-70-004 Shaft Washer 31-70-005 Roll Pin 31-70-006 Unbrako Screw 31-70-007 Safety Spring Washer 31-70-008 Hex Set Screw 31-70-009 Spring Washer 31-70-010 Filler Plug 31-70-011 Dowty Seal 58-67-492 Fusible Plug 31-70-013...
  • Page 87 APPENDIX B The scrapping edge of the conveyor is subjected to wear when the conveyor transports the solids towards the narrow drum end. The wear rate depends on the size and type of the solids. The wear will reduce the transporting capacity and thus the separating results. A far advanced wear i.e.
  • Page 88 Measure distance D by means of a slide calipers. After first measuring of a new machine or a new conveyor, insert the numerical value in the square above the diagrams. After subsequent measurings. Calculate the wear and plot it in one of the diagrams.
  • Page 91 APPENDIX C...
  • Page 105 APPENDIX D...

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