PRODUCT SERVICE MANUAL
Contents
1. Pump PRODUCT SERVICE MANUAL FOR AM322ICX 325AE 350AN and 400A PUMPS WARNING This Special Instruction Manual and General Instructions Manual SRM00046 should be read thoroughly prior to pump installation operation or maintenance READ THIS ENTIRE PAGE BEFORE PROCEEDING FOR SAFETY OF PERSONNEL AND TO PREVENT DAMAGE TO EQUIPMENT THE FOLLOWING NOMENCLATURE HAS BEEN USED IN THIS MANUAL A Failure to observe precautions noted in this box can result in severe bodily injury or loss of life WARNING 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 Non compliance of Safety instructions Safety instructions safety instructions where electrical safety which shall be identified by the is involved are considered for reasons following symbol could identified by of safe operation of affect safety of persons pump and or protection of pump itself are marked by below sign A AN ATTENTION CONTENTS Sal ety and Table Of Conenils u u u u u u uuu uuuuunnapatataliabuakalalusalulobuababebsbotabatabobakoua 1 General Instructions a rr ara rraarrsrrsssssssrssrssassisaaa 2 Introduction and Description of EQUIPMEN2. 2 power rotor 16 ball bearing 6 retaining rings 7 bushing 5 retainer 11 nylok fasteners 12 seals 30 shoulder screw 26 and inboard idlers 17 CAUTION ATTENTION Be sure to grasp idlers 17 as they emerge from pump case 1 to prevent them from falling Be careful not to catch fingers between idler and power rotor threads Remove o ring 4 from inboard cover 2 Remove Nylok shoulder bolt 26 and allow sleeve bushing 5 to slide out of its bore and rest against the power rotor inboard thread face Remove Nylok fasteners 3 and bearing retainer plate 11 10 Remove outer Truarc ring 7 11 Remove bearing 6 as follows See Figure 2 below for Strongback drawing a4 a oa 7 sss 112 we K lt Oe 2X 3 8 HEX NUT S J E g 12 12 X412 HEXBOLT A ge pe se ps 6 pa TA 8 gt ll Lair o a Install threaded rods 180 apart in two bearing retainer 11 holes in inboard cover 2 b Place 1 2 washer on end of power rotor 16 and then place strongback plate shown in figure 2 over threaded rods and against washer c Install a 1 2 bolt through strongback and tighten into threaded hole in end of power rotor 16 d Install nuts on threaded rods and then thread nuts evenly to begin pressing power rotor 16 through ball bearing 6 until power rotor is
3. Technical Customer Service Department at 704 289 6511 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 engineering and design data is transformed into most easily understood wording Imo Pump must assume personnel assigned to operate and maintain supplied equipment and 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 In applications where equipment furnished by Imo Pump is to become part of processing machinery these instructions should be thoroughly reviewed to ensure proper fit of said equipment into overall plant operational procedures 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 INTRODUCTION This instruction manual covers AM322ICX pumps These pumps have been designed for use in turbine lubricating applications The model and design construction of each pump can be identified by the designator code on pump nameplate Definitions of model designators are identified in Figure 1 DESCRIPTIO
4. N OF EQUIPMENT The AM322ICX pumps are positive displacement rotary screw pumps consisting of a precision bored housing case that encloses a driven screw power rotor and four 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 at center of pump to outlet port in a continuous uniform flow with minimum fluid pulsation and pump noise The AM322 CX also has a lip seal that prevents pumped fluid from spilling out the front end PUMP MODEL IDENTIFICATION This instruction manual covers the Imo AM322ICX pumps Model of each pump is identified on pump nameplate Refer to Figure 1 for instructional keys when using this manual 2 Model Nomenclature 325 AE 322 Design Lead and Rotation tee 325 Size Modification AE 1 2D CW Size Pump 1 0D CW Series T Size AN 1 25D CW sii Ball Power Rotor earning Diameter C Face Mounting Lip Seal Figure 1 E ORDERING INSTRUCTIONS When corresponding with Imo Pump regarding AM322ICX pumps refer to pump nameplate this instruction manual and assembly drawing as instructed below 1 From pump nameplate record pump model number serial number amp manufactured date 2 Record instruction manual number revision and date 3 From assembly drawing or parts list provide the IDP number s and names for replacement part s 4 Give above information to your Imo service rep
5. T a 2 P mO Model ldentMic ato u Z u E E u Gan aa 3 OIderinGgiameliiieli S u u 2 2 22 22 SSS uy SSusube kana a a nee 3 O pGOra Ou ue E sas deceaas dauadareebudeateddodeaneqbedaauthnasuu Sasu NSS ata 3 ANS EIS ceca h u uu u a S am Z Zm musun a maaan m ap u an ans us 4 PUMO DISSQSSOPIDIVYuu u us ass tastasssastsssascotaquastascs a T asas u amas 5 real 81S Im yu u gt oa Oe ese we meee ON ne er E apamama aba or ne Oe any assia ener 7 Installation Alignment amp Troubleshooting 9 PUMP ASSEMDIY DraWII0 uu 2 Siddaseuscvesisdecweace yet dce dean deien diene aacsest dea ewow 10 ATTENTION If operation of pump is critical to your business we strongly recommend you keep a spare pump or major repair kit in stock at all times As a minimum a minor repair kit o rings and bearings should be kept in stock so pump refurbishment after internal inspection can be accomplished A GENERAL INSTRUCTIONS Instructions found herein cover disassembly assembly and parts identification of AM322ICX pumps NOTE Individual contracts may have specific provisions that vary from this manual Should any questions arise which may not be answered by these instructions refer to the General Instructions Manual SRM00046 provided with your order For further detailed information and technical assistance please refer to Imo Pump
6. completely off bearing 6 e Once power rotor 16 is off bearing remove 1 2 bolt and remove power rotor 16 from inboard cover 2 CAUTION ATTENTION Ensure the power rotor 16 does not fall to floor once it is off bearing 6 12 Remove inner Truarc ring from power rotor 13 Remove sleeve bushing 5 from power rotor shaft 14 Remove ball bearing 6 from inboard cover 2 bore PUMP ASSEMBLY PROCEDURE NOTES Note Prior to assembly all parts should be cleaned and inspected for burrs or nicks Replace all worn or damaged parts Imo Pump recommends automatic replacement of O rings and ball bearing when parts have been removed from previously installed positions Wipe all parts including threaded bolts with light lubricating oil prior to assembly 7 NYLOK FASTENER TORQUE PROCEDURE Required torque stated on assembly drawing and supplemental torque table does not include additional torque required to install fasteners containing Nylok inserts pellet strip patch ring and collar Torque required for first application is much higher than it is for subsequent applications To insure that required preload on a Nylok fastened joint is achieved for each application following procedure is mandatory assembly practice 1 2 3 4 Using a suitable torque wrench install fastener in mating piece until Nylock insert is completely engaged Note torque required Add torque measured in Step 1 to value called for on assemb
7. d begin pressing ball bearing onto shaft 1 Install outer Truarc ring 7 once bearing is seated against inner Truarc ring 7 N 12 FLAT WSR 12 TREACEDRD _ v YN ASS N SARE N as D Z i Y CAUTION ATTENTION Use caution not to over press ball bearing beyond its desired position Ball bearing should just touch inner Truarc ring Method 2 Oven required with temperature verification capability a Place ball bearing 6 in oven and set temperature to 200 F 93 C Maximum Heat ball bearing for 30 minutes b On a flat and level surface stand power rotor on its outboard end face Carefully lower bushing cover assembly from step above onto shaft 16 Continue to lower cover until bushing face rests against power rotor inboard thread end face c Installinner Truarc ring to groove in power rotor 16 d Using protective gloves remove ball bearing from oven and install onto power rotor bearing diameter Ball bearing should easily slide on bearing diameter and position itself next to inner Truarc ring 7 e Allow ball bearing to cool then install outer Truarc ring 7 3 Install lip seals 30 into seal cover 11 4 Raise cover assembly 2 off of power rotor end face and position ball bearing 6 into its bore Install bearing retainer plate 11 with previously installed lip seals 30 using nylok fasteners 12 T
8. l SRMO0046 10 A IWASSV CVO NVOSGE XOICCEWV I 04298 Sg1 882 q q NOILOAS CO lt Z iA gu Ne Al N AL LN O 2 m Z I 0 P dha r gt JSN YJWOLSNO YOs dYL NI 18 1 109 9YL JSN YAWOLSNO 3404 dV1 NI 18 1 109 9YL V V NOILOAS 1 1 9702 01 SANOYOL NI 8g 1 9792 01 ANDYOL 1711N0 tara 9702 01 SANOYOL Ng 1S S Z 01 SANOYOL Accredited by the Council for Accreditation RvA xy t a gt National Accreditation Program Imo Pump 1710 Airport Road PO Box 5020 Monroe NC USA 28111 5020 COLFAX 1 704 289 6511 Toll 1 877 853 7867 Email cc colfaxcorp com Web colfaxcorp com 2012 Colfax Fluid Handling all rights reserved ALLWEILER COT PURITECH HOUTTUIN IMO LSC ROSSCOR TUSHACO WARREN 12
9. ly drawing Complete by tightening fastener to torque value determined in 2 above This procedure must be repeated each time a Nylok fastener is reused Pump Assembly 1 2 Slide bushing 5 into bore of inboard cover 2 aligning slot in bushing with tapped hole in inboard cover Install shoulder bolt 26 by tightening until shoulder is fully seated against the face of inboard cover 2 Check to assure that bushing 5 is not binding and is free to float Assemble ball bearing to shaft as below CAUTION ATTENTION Ball bearing 6 may be assembled to power rotor shaft by one of two methods When using either method DO NOT PRESS ON BALL BEARING OUTER RACE Pressing on outer race for installation could damage ball bearing Method 1 See Figure 3 for Ball Bearing Installation Sleeve Assembly a Ona flat and level surface stand power rotor on its outboard end face Carefully lower bushing cover assembly from step 1 onto shaft 16 Continue to lower cover until bushing face rests against power rotor inboard thread end face o Install inner Truarc ring 7 to groove in power rotor 16 Start ball bearing 6 onto power rotor 16 shaft a p Install 1 2 threaded rod into tapped hole in power rotor coupling end face D Place sleeve on ball bearing inner race h Place plate on top of sleeve with threaded rod through center hole Install flat washer and nut to threaded rod Tighten nut an
10. orque nylok fasteners as described in nylok torque procedure The basic torque is 5 5 Ib in 5 Install O ring 4 in groove in inboard cover 2 6 Using sling and hoist lift assembled power rotor and cover and slide into housing 1 power bore Once the first threaded section outboard end of power rotor is well into bore mesh inboard idlers 17 onto inboard end of power rotor threaded section Continue to hold idlers in place until they are able to be supported by their bores 7 Install inboard cover assembly to case 1 using Nylok fasteners 3 Torque Nylok fasteners 3 as described in the Nylok Fastener Torque procedure Basic torque for Nylok fastener 3 is shown on assembly drawing 8 Install outboard idlers 17 or 18 on 325 and 400 sizes into bores on outboard end of case 1 9 Install thrust plate 20 to outboard cover 19 using Nylok fasteners 12 Torque Nylok fasteners 12 as described in Nylok Fastener Torque procedure Basic torque for Nylok fastener 3 is shown on assembly drawing 10 Install O ring 4 in groove of outboard end cover 19 and assemble outboard end cover 19 and o ring 4 to case 1 using hex head fasteners 15 Torque hex head fasteners 15 to values shown on assembly drawing 11 Install key 8 and coupling half to power rotor 16 Installation Alignment and Troubleshooting For instructions regarding Installation Alignment and Troubleshooting See General Instruction Manua
11. pscrews 21 1 Name Plate 4 2 O Rings X 22 1 Name Plate 5 1 Balance Piston Bushing 23 1 Name Plate 6 1 Bal Bearing X 24 1 Name Plate T 2 Retaining Rings X 25 8 Drive Screw 8 1 Key 26 1 Shoulder Screw 11 1 Bearing Retainer 27 2 Pipe 1405 12 12 Thrust and Brg Retainer 28 1 Pin Spring Capscrews 13 2 Shoulder l Bolts 29 1 Pipe Plug 14 4 Hex Bolts 30 2 Lio Seal X 15 12 Outboard Cover Hex bolts 31 1 Tubina MNPT Fittinq 16 1 Power Rotor 32 1 Seal Cover O ring X 17 2 Inboard Idlers 33 1 Tubing Set in 350 Pump Size 18 2 Outboard Idlers 325 and 400 Pump Size Only X Minor Repair Kit Items H DISASSEMBLY AND ASSENBLY INSTRUCTIONS WARNING Failure to observe precautions while installing inspecting and maintaining pump can cause injury to personnel from accidental handling of liquids that may harm skin or clothing or fire hazard risks from flammable liquids or injury from high pressure fluid jets BEFORE working on equipment make sure all power to equipment is disconnected and locked out GENERAL COMMENTS NOTE Part number identifiers IDPs contained within parenthesis such as 10 refer to the circled numbers shown on the assembly drawing See Assembly and Table 2 Tools Required Procedures described in manual require common mechanics hand tools a torque wrench dial indicator and suitable lifting device such as slings They also require fabrication of a strong back as illu
12. resentative Imo sales and service representatives are listed in General Instruction Manual CA 1 F OPERATION F 1 LIQUID LIMITATIONS Never operate with thin liquids such 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 that of operational limitations Equipment must not be operated without verifying system s operating requirements are within pump s capabilities Under no circumstances are the following operating limits specified in Table 1 to be exceeded without specific approval from Imo Pump Table 1 Normal Pump Operating and Structural Limits MAXIMUM SPEED 3000 RPM VISCOSITY 50 3000 SSU MINIMUM MAXIMUM LIQUID TEMPERATURE O to 250 F 18 to 107 C MAXIMUM INLET PRESSURE MAXIMUM DISCHARGE PRESSURE 200 psig Cont Duty FILTRATION See General Instruction Manual SRM00046 Direct only MOUNTING Mounted in any attitude G PARTS LIST Table 2 Pump Parts List IDP QTY DESCRIPTION KIT IDP QTY DESCRIPTION KIT 1 1 Pump Case 19 1 Outboard Cover 2 1 Inboard Cover 20 1 Thrust Plate 3 12 Inboard Cover Ca
13. strated in figure 2 for bearing removal and a bearing installation tool as illustrated in figure 3 PUMP DISASSEMBLY A Fluid Leakage from disassembly of pump may make floor slippery and can cause personal injury Note Series AM322IC pumps incorporate highly finished precision parts that must be handled carefully to avoid damage to critical machined surfaces If complete overhaul of pump is required removal of pump from its mounting and locating pump in a suitable work area is recommended It is also recommended that all O rings and lip seals be replaced during overhaul regardless of their condition 1 Close suction and discharge piping to pump and disconnect piping Remove drain plug 29 and drain unit Remove pump from gear box or mounting bracket 2 Remove tubing 33 and coupling half and key 8 3 Remove hex head fasteners 15 and outboard cover 19 with o ring 4 from case 1 4 Remove Nylok fasteners 12 thrust plate 20 and o ring 4 from cover 19 9 Remove outboard idlers 17 or 18 on 325 and 400 sizes by unscrewing them from their bores CAUTION ATTENTION Do not permit idlers 17 18 to drop as they emerge from housing 1 Be careful not to catch fingers between idler and power rotor threads Support inboard cover 2 with a sling and overhead crane or hoist Slowly remove inboard cover assembly from pump case 1 after removing capscrews 12 Inboard cover assembly includes inboard cover
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