PRODUCT SERVICE MANUAL 3432/094 (A4PICX-187
Contents
1. Item Qty Part Description Item Qty Part Description 1 1 Power Rotor 12 1 Spacer 2 1 Key 15 1 Strainer 3 1 Retaining Ring 17 4 Hex Capscrews 4 1 Retaining Ring 20 1 Adapter Fitting 5 1 Bearing 21 2 Drive Screws 6 1 Inboard Cover 22 1 Name Plate 7 2 Washer 23 1 Seal Retainer 8 1 Rotor Housing 24 4 Socket Head Capscrew 9 4 Lock Washers 25 1 O ring 10 2 Socket Head Capscrews 26 1 Lip Seal 11 2 Idlers Items marked with are seal kit items G INSPECTION Intervals for inspection and replacement of worn parts varies with properties of pumped liquid and can only be determined by experience All parts of A4SICX 187 094 pump are lubricated by the pumped fluids Pumping liquid which contains abrasive materials or liquid that is corrosive will significantly reduce service life and call for shorter service intervals A worn pump will be noticeable by excessive vibration noise reduction in flow or reduction in pressure H PUMP MAINTENANCE WARNING Failure to observe precautions while installing inspecting and maintaining the pump can cause injury to personnel from accidental handling e g Liquids that may harm skin or clothing fire hazard risks from flammable liquids or injury from high pressure fluid jets Before working on equipment be sure power to equipment is disconnected and locked out DANGER H 1 H 2 H 3 GENERAL COMMENTS e Part number identif2. Non compliance of safety Safety instructions where Safety instructions which instructions identified by electrical safety is the following symbol involved are identified by reasons of safe operation shall be considered for of pump and or protection of pump itself are marked by the sign ATTENTION ATTENTION If operation of this 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 gaskets shaft seal 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 the A4PICX 187 094 pump NOTE Individual contracts may have specific provisions that vary from this manual For further detailed information and technical assistance to questions not answered by these manuals please refer to Imo Pump 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 that engineering and design data is transformed into most easily understood wording Imo Pump assumes personnel assigned to operate and maintain supplied equipment and apply this instruction manual
3. COLFISX Fluid Handling PRODUCT SERVICE MANUAL For 3432 094 A4PICX 187 094 A VVARNING Imo General Installation Operation Maintenance and Troubleshooting Manual No SRM00046 along with this manual and all other component manuals supplied with these type units should be read thoroughly prior to pump installation start up operation maintenance or troubleshooting MANUAL NO SRM00124 Rev 00 April 2014 READ THIS ENTIRE PAGE BEFORE PROCEEDING FOR THE SAFETY OF PERSONNEL AND TO PREVENT DAMAGE TO EQUIPMENT THE FOLLOWING NOMENCLATURE HAS BEEN USED IN THIS MANUAL injury or loss of life DANGER Failure to observe precautions noted in this box can result in severe bodily 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 equipment Failure to observe precautions noted in this box can cause damage or failure of ATTENTION could affect safety for persons CONTENTS Safety and Table of Contents cC POmTmmoOoUe General Instructions Introduction and Pump Model Identification Description of Pump Ordering Instructions Operating Parts List and Torgue Tables Inspection Pump Maintenance Disassembly and Assembly Instructions Pump Assembly Drawing A
4. e on assembly drawing TORQUE TO 39 22 UB FT 100 5 LB IN TORQUE TO OO F OUTLET TORQUE TO 50 2 LB IN NE RI LE E A l r yo I EL EN N F4 i P Md B SECTION A A OOP A4PICX 187 WITH LIP SEAL
5. fting front cover 6 with power rotor 1 idler rotors 11 ball bearing 5 supporting washer 12 and retaining ring 3 from housing 8 CAUTION ATTENTION During removal of front cover assembly to prevent idlers 11 damage hold idler rotors 11 against power rotor 1 until sub assembly is placed on work bench At that time Idler rotor 11 can be disengaged from power rotor 1 Disassembly front cover assembly by remove Retaining ring 3 and spacer 12 from front cover 6 Then slide front cover off power rotor 1 Remove ball bearing 5 from power rotor 1 Ball bearing 5 should be replaced if it is pressed off power rotor H 4 PUMP REASSEMBLY NOTE 9 10 Prior to pump assembly all parts should be cleaned and inspected for nicks burrs or gouges When ready for assembly wipe all parts including bolts with SAE 30 lubricating oil Install bearing 5 onto power rotor 1 either with a press or by heating CAUTION ATTENTION To prevent damage to bearing press only on bearing inner race when installing bearing If bearing is being heated for installation heat to 180 F 200 F for installation Install spacer 12 onto power rotor against inner race of bearing 5 and then install retaining ring 3 into groove on power rotor 1 Slide front cover 6 onto power rotor 1 until bearing 5 is seated in bearing bore of cover 6 Place pum
6. have sufficient technical knowledge and experience to apply sound safety and operational practices which may not be otherwise covered by this manual 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 the A4PICX 187 094 Imo pump This pump has been designed with a lip seal for use in Solar lube oil systems Model of each pump is identified on pump nameplate Definitions of model designators are identified in Figure 1 A 4PC x 187 094 Special Suffix Rotor Size 187 Design Modification LIP Seal Design Series Figure 1 Definition of Model Designators C DESCRIPTION OF PUMP A4PICX 187 094 pump is positive displacement rotary screw pumps consisting of a precision bored housing that 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 to outlet port in a continuous uniform flow with minimum fluid pulsation and pump noise Pump contains a lip seal D ORDERING INSTRUCTIONS To order a replacement pump contact Imo service representative with p
7. iers IDPs contained within parenthesis such as 8 refer to circled umbers shown on Assembly Drawing Close all pump line valves before working on pump TOOLS REGUIRED Procedures described in this manual reguire common mechanics hand tools a torgue wrench and a suitable lifting device such as slings straps etc PUMP DISASSEMBLY CAUTION ATTENTION Fluid leakage from dis assembly of pump may makefloor slippery and cause personal injury NOTE The 4PIC pumps incorporate highly finished precision parts that must be handled carefully to avoid damage to critical machined surfaces Parts removed should be tagged for identification and their exact positions in pump carefully noted so that new parts or removed parts are properly replaced 1 8 NOTE If lip seal only is to be replaced remove key 2 from shaft 1 remove seal retainer 23 by removing socket head capscrews 24 and then remove lip seal 26 and O ring 25 from seal retainer and discard See steps 7 and 8 on page 4 of assembly instructions for reinstallation of lip seal 26 If rest of pump is to be disassembled proceed below Remove pump from driver by removing bolts 17 and washers 9 Place pump on workbench Remove strainer retaining ring 4 and strainer 15 Place pump on end suction side down on a solid flat surface and remove capscrews 10 Remove front cover and rotor set as a sub assembly from housing 8 by li
8. p on end suction side down on a solid flat surface for next step AUTION ATTENTION To prevent idlers from disengaging from power rotor during next step it is important to hold idler rotors against power rotor until entire sub assembly is positioned with a minimum of rotor set length into housing Carefully mesh idler rotors 11 in proper position axially onto power rotor 5 and while holding idlers in that position carefully lift rotor set and front cover sub assembly and install into housing 8 When rotor set is approximately 50 of its length into housing 8 you can release idler rotors 11 and continue installation until front cover 6 is firmly seated on locating diameter of housing 8 Install cap screws 10 and torque per value on assembly drawing Install lip seal 26 and O ring 25 in seal cover 23 Be sure open side of lip seal 26 is facing O ring 25 side of seal cover 23 Grease lip seal 23 and O ring 25 and install seal cover 23 with lip seal 23 and O ring 25 onto shaft 1 Be careful not to turn lip of lip seal 23 inside out during installation Install inlet strainer 15 and retaining ring 4 into housing 8 If adapter 20 was removed screw into place on housing 8 and torque to required value on assembly drawing NOTE Pump should rotate free and smooth 360 of rotation 11 Install pump onto bracket with lock washers 4 and bolts 17 and torque bolts 17 to valu
9. ump model number serial number and manufactured date This information can be found on pump s nameplate E OPERATION E 1 LIQUID LIMITATIONS Never operate with thin liquids such as solvents or water Pump is designed for liquids having general characteristics of oil E 2 OPERATING LIMITATIONS 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 s operating requirements are within pump s capabilities Under no circumstances are operating limits specified in Table 1 below to be exceeded without specific approval from Imo Pump Table 1 Pump Operating and Structural Limits MAXIMUM SPEED 3600 RPM VISCOSITY 60 SSU 10 3 Cst Minimum if over 5000 SSU 1079 cSt contact Imo Pump TEMPERATURE 0 to 1809F 18 to 82 C Maximum INLET PRESSURES A4PICX 187 094 pump is submerged in a slightly pressurized reservoir DRIVE scz aseze catea ana cans Direct drive only FILTRATION Always use inlet strainer MOUNTING Flange mounted only F PARTS LIST AND TORGUE TABLES Table 2 Pump Parts List
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