PRODUCT SERVICE MANUAL SERIES 4U AND 6U
Contents
1. 1 T 5 5 5 Z Wi 5 2 TY 8 3 8 7 4 o Yi AAN o 2 l NUR Lay al Hie S Jf MOA i canes WINS N i Wu 11 FIGURE 8 MOTOR OUTLET PUMP FIGURE 9 INLET PUMP OUTLET MOTOR INLET gt amp F EBAH 2 A iy uA d me Hil fg 7 GY n 2 E pr i 5 Y j 4 2 7 Y YAN 2 2 EE a XN h 4 s N NS T T P 1 EE i 1 12 FIGURE 10 032 045 T a AN 552 Lc m sar ap 2225 A 2 Te FIGURE 11 B NY D E f FL LL 1 ZENS N FIGURE 12 FIGURE 13 14 t SY C K Lum e o 0 2 o t l u 8 5 0 2 A 2 D ZA ae 5 2 5 7 177 de io 6 RS a A na ee Ct id F on RES Lr ET NADAS SESS 29 s a2. 2 o Uj 404 80 E 9 5 ZA PEERS HIE es a 128 SAS a WTA i T es Qf mi 2 Th 9 3 8 ny 15 IMO Pump 1710 Airport Road 28110 PO Box 5020 Monroe NC USA 28111 5020 Tel 1 704 289 6511 1 877 853 7867 Fax 1 704 289 9273 Email imo pump colfaxcorp com Web www imo pump com CEHTIFIE OO tj e TEN QMS bu D ISO 1 Accredited by the Council National Accreditation Program for Accreditation RvA 7 COLFAX Fluid Handling 2012 Colfax Fluid Handling all rights reserved ALLWEILER COT PURITECH HOUTTUIN 1 0 LSC ROSSCOR TUSHACO WARREN 16
3. SPECLAL LEGEND SPECIAL SEAL SPECIAL DESIGN SPECIAL ROTORS SPECIAL MATERIAL FIGURE 1 DEFINITIONS OF MODEL DESIGNATORS FOR SERIES 4U AND 6U LEAD AND ROTATION BLANK 20 CW D 2DCCW P 1 60 CW SERIES R 1 6 CCW eT MECHANICAL SEAL ROTOR SIZE V VITON 118 137 155 187 B BUNA 200 218 250 OTHER X SPECIAL OTHER X SPECIAL MOUNTING FC COMBINED FOOT FLANGE MOUNT OTHER OTHER X SPECIAL X SPECIAL T CARBIDE SEAL 2 STEEL CASE J EXTRA CLEARANCE BUSHING 5 STEEL CASE X SPECIAL MOUNTING LEGEND FC COMBINED FOOT FLANGE MOUNT SPECIAL SEAL OTHER HIGH INLET PRESSURE X SPECIAL SPECIAL DESIGN 2 STEEL CASE SPECIAL MATERIAL SPECIAL FLAMGES AXIAL INLET HEAD HIGH SPEED OPERATION FIGURE 2 DEFINITIONS OF MODEL DESIGNATORS FOR SERIES 4T AND 6T ORDERING INSTRUCTIONS When corresponding with Imo Pump regarding Series 4U and 6U and Series 4T and 6T pumps refer to pump nameplate this instruction manual and assembly drawing as instructed below e From pump name plate record pump model number serial number and manufactured date e Record instruction manual number revision and date e From instruction manual record figure numbers that apply to replacement part s From assembly drawing or parts list Table 3 provide IDP number s and names for replacement part s e Give above information to you Imo service representative Imo sales and servi
4. 021 Remove outboard truarc ring 021 Using an arbor press remove bearing from power rotor Remove seal seat adapter and O ring gasket spacer J seat and gasket from power rotor Slide rotating assembly off the power rotor assembly consist of spring holder spring bellows drive band and rotating ring Figure 11 Only Remove spacers 019 018 and 046 from cover 001 Figure 15 Only Remove spacer 019 and gasket 057 from cover 001 Remove gasket or O ring from mechanical seal bore of cover 001 Figures 7 8 9 and 10 Gasket furnished with mechanical seal 018 Figures 12 13 and 14 Gasket 057 Figures 12 and 14 O ring 061 Figure 13 Remove capscrews 017 and slide housing 015 from outlet end of cover 001 Removal of housing 015 also removes clamp rings 036 spring pin 042 O ring 016 and backup ring 035 Remove 0 ring 016 backup ring 035 and clamp rings 036 from housing 015 Remove capscrews 044 and idler stop 014 Figures 7 8 Il 12 and 15 Slide spacer 043 from cover 001 Remove bushing 007 from cover 001 H 4 PUMP ASSEMBLY Prior to assembly of pump all parts should be cleaned and inspected for nicks and burrs Replace all worn or damaged parts Colfax recommends replacing all O rings gaskets mechanical seals and ball bearings when these parts are disturbed from their previously installed positions Refer to proper assembly drawings Figures 7 throu
5. 8 9 10 and 11 Install gasket 006 on cover 001 21 Install inlet head 002 using capscrews 003 with nuts 004 Torque capscrews 003 to necessary value listed in Table 3 22 Mount pump to bracket Install key 022 and coupling hub Connect driver and piping NOTE Figures 12 14 and 15 If inlet and outlet connectors were removed from pump O rings should be replaced during re assembly TABLE 3 TORQUE VALUES Part RotorSize Torque Values Special Instructions Capscrew 50 Ibs ft 2 lbs ft NOTE Inlet head 002 can be rotated to suit suction pipe 003 137 156 52 Ibs ft 2 Ibs ft arrangements as follows 187 200 52 Ibs ft 2 Ibs ft 4U and 6U Rotor Sizes 118 through 156 60 increments 218 250 U 100 lbs ft 2 Ibs ft 4U and 6U Rotor Sizes 187 through 250 45 increments 218 250 T 75 Ibs ft 2 Ibs ft and 6T 90 increments Capscrew 80 Ibs ft 5 Ibs ft 017 Remove capscrews 003 with nuts 004 and rotate inlet head 002 Ensure that gasket 006 or O ring 006 between inlet head and cover 001 is not damaged If Capscrew gasket or O ring is damaged it must be replaced to em TROUBLESHOOTING For assistance with troubleshooting see General Instruction Manual 5 00046 FIELD AND FACTORY SERVICE AND PARTS Imo Pump maintains a staff of trained service personnel that can provide pump installation pump startup maintenance overhaul
6. COLFAX Fiuid Handling PRODUCT SERVICE MANUAL SERIES 4U AND 6U SERIES 4T AND 6T ROTOR SIZES 118 250 WARNING The IMO General Installation Operation Maintenance and Troubleshooting Manual No SRM00046 this manual and associated component manuals supplied with the unit should be read thoroughly prior to pump installation start up operation maintenance or troubleshooting Manual No SRM00026 Rev 04 14 0159 Date April 2014 READ THIS ENTIRE PAGE BEFORE PROCEEDING FOR SAFETY OF PERSONNEL AND TO PREVENT DAMAGE TO EQUIPMENT FOLLOWING NOMENCLATURE HAS BEEN USED IN THIS MANUAL Failure to observe precautions noted in this box can result in severe bodily injury or loss of life Failure to observe precautions noted in this box can cause injury to personnel by accidental contact with equipment or liquids Protection should be provided by user to prevent accidental contact CAUTION ATTENTION Failure to observe precautions noted in this box can cause damage or failure of equipment Noncompliance of safety Safety instructions where Safety instructions which instructions identified by the electrical safety is involved shall be considered for following symbol could affect are identified by reasons of safe operation of safety for persons pump and or protection of pump itself are marked by A ATTENTION N ATTENTION If operation of this pump is critical to your business we strongly recommend
7. and troubleshooting supervision as well as installation and maintenance training Our factories provide maintenance as well as overhaul and test facilities in event user prefers to return pumps for inspection or overhaul Factory overhauled pumps are normally tested and war anted as new for a period of one year from date of shipment For either field service or factory overhaul assistance contact your local Imo Sales Office or representatives at Technical Customer Service Department in Monroe NC USA Most pumps have repair kits available Minor Repair Kits are used to repair leaking seals bad bearings and or for re assembly after pump tear down They include as applicable pump shaft seals packing all gaskets O rings and bearings Major Repair Kits are sufficient to rebuild completely worn out pumps to as new condition They include all parts found in the Minor Repair Kits plus all major internal parts subject to wear Since kits have all necessary parts kit purchase is preferred rather than selecting individual parts When parts are individually selected from Parts List some needed components are often overlooked In addition mixing worn or used parts with new parts risks rapid wear and shortened service life from new parts 10 1 5 S Hs 5 E OTE it 2 54 A N SEIS
8. ce representatives are listed herein and in the General Instruction Manual SHMO00046 F OPERATION F 1 LIQUID LIMITATIONS Never operate with thin liquids suck as solvents or water Pump is designed for liquids having general characteristics of oil F 2 OPERATING LIMITS CAUTION ATTENTION Operating conditions such as speed fluid viscosity temperature inlet pressure discharge pressure filtration duty cycle drive type mounting etc are interrelated Due to these variable conditions specific application limits may be different from operational limitations Equipment must not be operated without verifying system operation requirements are within pump s capabilities Under no circumstances should following operating limits specified in table 2 be exceeded Without specific approval from Imo Pump VISCOSITY MINIMUM MAXIMUM 4222 PRESSURE 4 60 6 MAXIMUM 10050 7 2500PSIG 4 AND 6T MAXIMUM 5096 0 PSIG Discharge pressure must always be 50 PSIG above suction pressure DRIVE FILTRATION Table 2 Normal Pump Operating and Structural Limits SPECIAL NOTE Series 4U and 6U and Series 4T and 6T units can be operated as hydraulic motors by reversing the rotation of the unit when used as a pump High pressure inlet of motor is the same as high pressure outlet of the pump Low pressure outlet of the motor is the same as low pressure inlet of the pump When ordering replacement parts for units used as m
9. d apply this instruction manual have sufficient technical knowledge and are experienced to apply sound safety and operational practices which may not be otherwise covered by this manual N WARNING If installation operation and maintenance instructions are not correctly and strictly followed and observed injury to personnel or serious damage to pump could result Imo Pump cannot accept responsibility for unsatisfactory performance or damage resulting from failure to comply with instructions B INTRODUCTION This instruction manual covers IMO Pump Division Series 4U and 6U and Series 4T and 6T pumps These two series of IMO pumps have been designed to meet requirements of hydraulic industry in medium flow ranges Because of large number of operating conditions it is necessary to have a variety of construction and material combinations to meet job requirements Model of each pump is identified on pump nameplate Specific models discussed in this manual are identified in Table below by Figure Numbers only Correct use of this manual requires proper identification of Figure s applicable to pump assembly and seal arrangement Refer to assembly drawings Figures 7 through 15 for pump identification and mechanical seal drawings Figures 3 through 6 for applicable seal selection Model designators are identified in Figures 1 and 2 Table 1 Series 4U 6U 4T and 6T Pumps Pump Rotor Pump Seal Fig Pump Rotor Pump Seal Model Size Fig No N
10. g assembly onto the power rotor Steps 10 15 10 Slide rotating assembly onto power rotor with rotating assembly positioned next to stepcut shoulder of power rotor 11 O ring type Install stationary seal seat into seal seat adapter ensuring that slot in seal face is aligned with roll pin J type O ring type Install gasket O ring see drawings for correct IDP number furnished with mechanical seal on cover 001 12 Install seal seat adapter J seat and spacer onto power rotor 13 Install truarc rings on outboard groove of power rotor 14 Using an arbor press press bearing until inner race of bearing makes contact with truarc rings Install truarc rings in inboard groove of power rotor This secures bearing inner race into position optional Heat bearing using a bearing heater induction heater to 200 F and slide bearing into position Mechanical seal must then be manual compressed to install inboard truarc ring 15 Slide assembled power rotor 010 into outlet cover 001 ensuring that all parts are properly positioned 16 Install bearing retainer 008 to cover 001 using bolts 009 Torque bolts 009 to 25 Ibs ft 2lbs ft 17 Insert idlers 011 by screwing them into rotor housing 015 bores 18 Install spacers 041 and plate 028 using capscrews Torque capscrews 027 to proper value listed in Table 3 19 Figures 12 14 and 15 Install O ring 006 in groove of cover 001 20 Figures 7
11. gh 15 mechanical seal drawing List of Materials Table 3 during assembly Coat all parts with light lubricating oil to assist in assembly NOTE Unless noted assembly procedures apply to all pumps Figures 7 through 15 Install bushing 007 in cover 001 Figures 7 8 11 12 and 15 Install spacer 043 in cover 001 Install idler stop 014 to cover 001 using capscrews 044 Torque capscrews 044 to 10 lbs ft 2 los ft Insert O ring 016 and backup ring 035 into groove of housing 015 8 NOTE Backup ring 035 must be positioned on side of groove toward clamp ring 036 slot 5 Install rotor housing 015 in cover 001 NOTE Do not insert housing 015 past clamp ring grooves 6 Install clamp rings 036 in grooves of housing 015 NOTE Clamp ring 036 with slot on inside diameter fits over spring pin 042 in housing 015 7 Install capscrews 017 in clamp rings 036 and torque capscrews 017 to proper value shown in Table 2 8 Figure 11 Only Install spacers 046 018 and 019 in cover 001 9 Figure 15 Only Install gasket 057 and spacer 019 in cover 001 CAUTION ATTENTION Coat all parts of mechanical seal with oil prior to assembly on power rotor NOTE Rotating Assembly The rotating assembly is normally packaged as an assembly for ease of installation Ensure that all O rings are properly positioned in assembly prior to installation Assemble the mechanical seal bearin
12. ling of liquids that may harm skin or clothing or fire hazard risks from flammable liquids or injury from high pressure fluid jets H 1 GENERAL COMMENTS Note Part number identifiers IDP contained with parenthesis such as 9 refer to numbers on assembly drawings De energize driver before starting with any maintenance action H 2 TOOLS REQUIRED Procedures described in this manual require common mechanics hand tools a torque wrench dial indicators for alignment and a suitable lifting device such as slings straps etc NGI I EE A WS MECHANICA EF A E AR LA E IRIV AND TAT ARY SEAT ROTATING e E Figure 3 Mechanical Seal Drawing Single Spring Bellows Type 6T O ring Type 4U 6U J Figure 4 O Ring Type Seal Seat Adapter Figure 5 J Sea
13. o Model Size No Fig No 4UVC 6UVC 4UVF 6UVF 4UVC 6UVC 4UVF 6UVF 6UKC 4TVFCS 6TVFCS 4TVTFCS 5 137 200 118 200 137 200 118 200 218 250 218 250 218 250 218 250 156 137 200 137 200 137 200 137 200 0 03 93 02 CO CO CO 6 5 5 5 218 250 218 250 218 250 218 250 137 156 137 156 187 200 187 200 218 250 218 250 187 187 gt amp DESCRIPTION OF EQUIPMENT Series and 6U and Series 4T and 61 pumps are positive displacement rotary screw pumps consisting of a precision bored housing which encloses a driven screw power rotor and two intermeshing following screws idler rotors These screws when rotating form a succession of closures or cavities As they rotate fluid is moved axially from inlet port to outlet port in a continuous uniform flow with minimum fluid pulsation and pump noise D PUMP MODEL IDENTIFICATION LEAD AND ROTATION BLANK 2D x X 2 1 60 OCW DESIGH REVISION ROTOR SIZE 118 137 156 187 200 218 250 OTHER SPECIAL POU ATS C FLANGED MOUNTED FCHXYT MOUNTED OTHER X SPECIAL SERIES eu MECHANICAL SEAL NI SEAL ONE SEAL ON BEARING OTHER SPECIAL C FLANGED MOUNTED FOOT MOUNTED OTHER X SPECIAL
14. otors refer to List of Materials Table 3 keeping in mind that parts listed are for pump units Example 001 Outlet Cover is Inlet Cover for unit used as a hydraulic motor G PART LIST NO PART DESCRIPTION NO PART DESCRIPTION NO PART DESCRIPTION Cover 019 2 Spacer Sub Assembly Tube Inlet Head Includes Items 059 and 060 Drive Screw 3 Capscrew 6 020 1 Ball Bearing Plug Nut 6 021 1 Truarc Ring 2 Connector Gasket 022 Key O ring Balance Piston Bushing 027 2 Capscrew 2 Capscrew 4 Retainer 028 2 Plate Lockwasher 4 Bolt 4 031 Nameplate Connector Power Rotor 032 Drive Screw 2 O ring Idler 2 035 1 Back Up Ring Capscrew 4 Stop 036 2 Clamp Ring Lockwasher 4 Housing Sub Assembly 1 Spacer 2 Gasket Includes item 042 and 058 042 Spring Pin Housing O ring 043 Spacer Spacer Capscrew 12 Seal 044 2 Capscrew 2 Spring Pin 045 Nameplate O ring Sleeve Quantities are one 1 except when noted in parentheses after part description 3 Quantity twelve 12 for Figures 12 5 Quantity sixteen 16 for Figures 12 14 and 15 14 and 15 Items marked 1 are included in 12 14 and 15 Major Repair Kit H MAINTENANCE BEFORE working on equipment make sure all power to equipment is disconnected and locked out WARNING Failure to observe precautions while installing inspecting and maintaining pump can cause injury to personnel form accidental hand
15. t Seal Spacer H 3 PUMP DISASSEMBLY Determine pump model identification on pump nameplate to select applicable pump assembly Refer to that assembly for the following instructions CAUTION ATTENTION Fluid leakage from disassembly of pump may make floor slippery and cause personal injury 1 Close off suction and discharge piping to pump and disconnect piping Remove pump from driver coupling and mounting bracket Remove coupling hub and key 022 2 Remove nuts 004 capscrews 003 and inlet head 002 Remove gasket 006 Figures 7 8 9 10 and 11 or O ring 006 Figures 12 14 and 15 from cover 001 3 Remove capscrews 027 plate 028 and spacers 041 4 Remove idler rotors 011 by unscrewing idler rotors from housing bores CAUTION ATTENTION Do not permit idlers 011 to drop as they emerge from housing 015 7 10 11 12 13 14 15 16 17 18 19 Remove bolts 009 and bearing retainer 008 Slide assembled power rotor 010 from pump Removal of assembled power rotor includes Figures 7 8 9 10 12 13 and 14 Truarc rings 021 ball bearing 020 soacer 019 mechanical seal 018 and spacer 062 Figure 13 only Figures 11 and 15 Truarc rings 021 and ball bearing 020 Remove inboard truarc ring referencing the pump shaft keyway as inboard side from power rotor 010 Using an arbor press press bearing 12 off shaft in order to access outboard truarc ring
16. you keep a spare pump or major repair kit in stock at all times As a minimum a minor repair kit o rings gaskets shaft seal and bearings should be kept in stock so pump refurbishment after internal inspection can be accomplished Table of Contents GEMERAETNSTRUC TIONS diat nb eun eost ema renes been ine reve toten 3 Be INIRODU TION 3 C DESCRIP TON OF 010 3 D PUNVIPMODELIDENTIPIGA 00007 0 4 Si GIO 00 4 TOPE 5 1 0001010 eal Ehe rd LS EON 5 OPERATINIGJEIVII 5 00 6 tices TENERENTUR 6 00021 6 Fi TOOLS REQUIRED 000 7 000 7 Fe PUNIP ASSEMBLY A 8 ASSEMBLEY DRAVINGS 0000 11 A GENERAL INSTRUCTIONS This manual cannot possibly cover every situation connected with installation operation inspection and maintenance of equipment supplied Every effort was made to prepare text of manual so that engineering and design data is transformed into the most easily understood wording Imo Pump must assume personnel assigned to operate and maintain supplied equipment an
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