Screw Pumps ACF/UCF

Screw pumpsA Member of theCOLFAX PUMP GROUPACF/UCFMaintenance and ServiceInstructionThis instruction is valid for all ACF/UCF pump models shown on page 2ContentsList of componentsExploded view/Ordering code/ Service intervalsChanging ball bearing/Inspection of rotors and shaft sealSectional view/List of toolsShaft sealDismantlingReassemblyTuning valvePressure relief valvePage23456681111ACF 0616GBFebruary 2002

List of componentsValid for all ACF/UCF Generation 4 pumps with lead and sizes: 080, 090, 100 K4/N4; 110, 125L4/N4BRO Also valid for pump options A101, A020, A084, A087.with version codes: INVFPEExplanation:Components included in Spare parts sets:Pos No 6582QtyKey1Power rotor (CCW-rot.) 1Power rotor (CW-rot.)1Ball bearing1Locking washer1Bearing nut1Support ring1Retaining ring1Idler rotor (CCW-rot.)2Idler rotor (CW-rot.)2Pump ring1Screw4-6Screw8Screw8Plug1Sealing washer1Plug1Sealing washer1Valve housing1Front cover1O-ring1Rotating ring1Rubber ring1Washer1Spring1Seat1O-ring1Bearing disc1Screw4Grease nipple1Protective cap1Rear cover1Gasket1Top cover1Gasket2O-ring1Bottom cover1Valve spindle1Regulating nut1Pin1Valve piston1Spring1Wheel1Nut1Key1Valve plate1Shock valve0-2Washer1Sleeve1Spring1Distance sleeve1G011 G012 G050 G053 G054 G057 G070 Notexxxxxxxxxx(x)xxxxxx(x)xxxxxxxxACF Pumpwith DIN flangesUCF Pumpwith ANSIflangesG011 Rotor setCCW-rot.G012 Rotor setCW-rot.G050 Compl.shaft sealG053 Minor kit(G050 G057)G054 Major kit1)1)xxxxxxxxxG070 ValveelementNote:1) Valid for sizes100 - 1255)xxxxxxxxxxxxxxxxxxxxx2) Delivered onlyas shaft sealG0502)2)3)xxxxxxxxxxG057 Joint kitxxxxxxxxxxxxxxxxxxIMO AB, Telephone: 46 8 50 622 800, Telefax: 46 8 645 15 09E-mail: info@imo.se, Web: www.imo.se5)5)5)5)5)5)5)5)5)5)5)5)5)4) 5)5)5)5)5)3) Valid for pumpxxxE, item no601 - 658, 480excluded4) Number ofshock valves:size 080-090 :0100-110: 1,125: 25) Valid for pumpxxxO/xxxPACF 0616GBFebruary 2002

!Before commencing any work, read this instruction carefully! Failure to comply with these instructions maycause damage and personal injury!For more information about the pumps identification code, technical data and performance we refer to the ACF Productdescription. Fore more information about the pumps installation, Start-up and trouble shooting we refer to the IMOInstallation and Start-up instruction for low pressure pumps.455Exploded view606602612613615636201113655462 A401451122480501526 A60861404621010658453622 A556656506526123124520521455130 132511463511 A463 A 432429 A424430113424 A657605602601621623622551425429437509 A509 C509 E509 D1020202Fig. 1Ordering codeSpare parts setsPos No080090Pump size100110Recommended spare parts kits125G011 Rotor set N-lead 188661 171249 175638CCWK-lead 189665 189666 189667"L-leadG012 Rotor set N-lead 105411 105429 105437 105445CWK-lead 187518 187526 187534"L-lead105452105460G050 Shaft seal xRxx"xVxx105486 105494 105502 105502175562 183467 175570 175570105502175570G057 Joint kit * xRxx"xVxx183335 183350 183376 183392183343 183368 183384 183400183418183426G070 Valveelement"IxxOIxxP066092 066092 066704 066704189662 189662 189663 189663067363189664615 ValveSpring"xxxOxxxP021451 021451 021766 021766021352 021352 021774 021774022061022079105478Every shutdown for service of a plant is costly. Thetime for repair should therefore be limited to aminimum which can be accomplished by keeping aspare pump. The changed pump can later be repaired at a suitable place and can then be used as aspare pump.For maintenance the following spare parts kits arerecommended:Kit ContentsTo be used forG057 Gaskets, ballbearing, etc. Dismantling of thepumpG053 G057 shaft seal G050 Normal scheduledinspectionG054 G053 complete rotor set Repair afterG012 (for CW rotation) damage or valve spring, item 615 greater wear* not valid for A084 and A087Service intervalsThe intervals for inspection and replacement of wearparts vary greatly with the properties of the pumpedliquid and can only be determined by experience.Except for the ball bearing, all internal parts of theACF-pump are lubricated by the pumped liquid.Pumping liquid which contain abrasive materials, orliquid that is corrosive, will significantly reduceservice life and call for shorter service intervals.ACF 0616GBFebruary 2002Wear in the pump will normally show as unnormal: Vibration Noise Loss of capacity Reduction in flow/pressure LeakageWe recommend planned inspection and overhaul atregular intervals, not exceeding 3 years. It is recommended always to have the spares included inminor spare part kit G053 available.IMO AB, Telephone: 46 8 50 622 800, Telefax: 46 8 645 15 09E-mail: info@imo.se, Web: www.imo.se3

Changing ball bearingThe ACF-pump is fitted with an external greaselubricated ball bearing.When delivered from IMO AB, the ball bearings arefilled with grease of type B.Whenever the ball bearing is removed, it is recommended to exchange it for a new one.Fit the new ball bearing properly greased and regrease it after one hour of running, while the pump isoperating.Lubrication intervalsPump sizeGreaseamountgram080and09015100, 110and12523Tempmax BBCUse an appropriate type of grease, as per table andgrease gun suitable for grease nipple (pos 473)according to DIN 71412 (ISO 6392).On vertical mounted units the greasing intervals arereduced to half.Installed in dusty or dirty premises or in a corrosiveenvironment it should be lubricated at more frequent intervals.If using others than these recommended greasescheck if it is possible to mix them with each other,otherwise clean before using a new grease.Recommendedgreases:Speed, rpmType A175014501150950BP Energrease LS3Lubricating intervals in working hours Esso Beacon 3Mobil Mobilux 210 000 10 00010 000 10 000Shell Alvania G33 9004 7005 3005 900Texaco Multifak EP 27 9009 50010 000 10 000Type BBP Energrease, HTG23 1003 7004 2004 700Chevron Industrial1 2001 5001 6001 800Grease Heavy450600650650Esso Unirex N39 000 10 00010 000 10 000Mobil Mobiltemp,3 5003 9004 7005 300SHC 1007 1007 9009 50010 000Shell Darina 22 8003 1003 7004 200Texaco Hytex EP 21 1001 2001 5001 600Type C300450600600Mobilith SHC 460Inspection of rotorsInspection of shaft sealTo reach the idler rotors in a quicker way thandescribed in the dismantling section, loosen the rearcover (480) with valve. Screw out the idler rotorsbackwards.Internal clearances in the pump, which are vital forits proper function, may have been affected by wear.Acceptable wear can be determined only by experience of the actual application. As a rule of thumb thefollowing max clearance values may apply: Between rotor and bores: 0.2 mm Between rotor flanks: 0.4 mmFor light duties (low pressure, medium viscosity)even bigger clearances may be acceptable but forlow visc./high pressure duties the limit will belower. Also watch if there are major scratches onthese parts.As the seal faces of a mechanical shaft seal are lubricated by the fluid a certain leakage will always bepresent. Ten drops per hour can be considered asacceptable.An external visual inspection of the pump is advisable at least every two days to assure that the shaftseal is not leaking too much. Excessively leaking shaftseals should be changed without delay, as the leakagenormally will grow worse and cause additionaldamage. Follow the instructions in the dismantling/reassembly session.When working with a shaft seal, cleanliness is ofutmost importance. Avoid touching the seal faces.If necessary, the seal faces should be cleaned immediately prior to assembly, using a dust free cloth andclean solvent.For lubrication of shaft seal read instructions in fig 22.4If the pumps operating temperature exceeds 60 C let the pump cool off before anyservice, maintenance or dismantling workis commenced to avoid burn injury.!When handling liquids which may involvefire hazards appropriate precautions toavoid danger are to be taken.!All work carried out on the pump has to beperformed in such a manner that risks forpersonal injury are observed!!In case of failure for a system with elevatedpressure, fluid jets may cause injury and/ordamage.!When handling liquids that may harm skinuse gloves and/or protective clothing.!Oil leakage may make the floor slipperyand cause personal injury.!IMO AB, Telephone: 46 8 50 622 800, Telefax: 46 8 645 15 09E-mail: info@imo.se, Web: www.imo.seACF 0616GBFebruary 2002

List of tools necessary for dismantling and reassemblydMounting sleevedimensions (mm)GREASEACF 4 IMO ABLSlidecalliperScrew Hookdriver spannerCrowbarPlasticmalletPullerAllenkeyPairs ofPliersSocketwrenchGreaseDMountingsleeveOil 150Fig. 3Sectional view401506511462A 462 613 606 132656130657602509A601509C605509D622A463A 463621509E622 623Tuning valvesize 080 - 090Tuning valvesize 100 -125424429437425424A430 432 429A526A 526 (106)501202 102556xxxE453520ACF 3 IMO AB521551Fig. 4ACF 0616GBFebruary 2002IMO AB, Telephone: 46 8 50 622 800, Telefax: 46 8 645 15 09E-mail: info@imo.se, Web: www.imo.se5

Shaft seal - assembly drawingACF 22 IMO AB!Before any maintenance work, ensure thatthe driver is deenergized and the pumphydraulically isolated.Connecting and disconnecting of electriccables must be done only by personnelauthorized to do such work.511511A 509A 509C 509D 509E Make sure to mount these parts in rightorder and in right direction.Fig. 5DismantlingB.A.ONACF 24 IMO ABOFFACF 5 IMO AB521 Turn the electricity OFF. Close the valves. Disconnect the electric motor.ACF 23 IMO ABFor most installations repair can be done withthe pump in place by removing the motor.1020 For horizontal installation drain the pump byloosen screws 453 3-4 turns and loosen 480valve housing.ATTENTIONUse appropriate vessels to collect oilspillage when opening the pump Loosen and remove screws 521. Pull out the power rotor 1020 with thehelp of coupling half or an eye bolt fittedin the power rotor.Pump and/or motor should be liftedATTENTION! with straps securely attached so that theBe careful when the threaded part of therotor passes the bore in the cover.centre of gravity is located in order toavoid tipping.Fig. 66Fig. 7IMO AB, Telephone: 46 8 50 622 800, Telefax: 46 8 645 15 09E-mail: info@imo.se, Web: www.imo.seACF 0616GBFebruary 2002

D.ACF 7 IMO ABC. Note the axial position of the coupling half. Remove the coupling half. Release the stop screw.Fig. 9Fig. 8F.E.520123113 Unlock thelocking washer123 with ascrew driver.ACF 8 IMO AB Remove the washer 520. Remove the key 113.Fig. 10Fig. 11124H.G.123124 Remove the bearingnut 124 and thelocking washer 123.Fig. 12ACF 0616GBFebruary 2002ACF 10 IMO ABACF 9 IMO AB Loosen thebearing nut 124.Fig. 13IMO AB, Telephone: 46 8 50 622 800, Telefax: 46 8 645 15 09E-mail: info@imo.se, Web: www.imo.se7

I.1J.130132ACF 12 IMO ABACF 11 IMO AB2511 122 Use a crowbar to press the seat 511 backwards on the shaft so that a space arisesbetween the seat and the ball bearing. Placethe puller feet into this space and pull off theball bearing 122.51135091 Remove the support ring 130 and theretaining ring 132 (Use a pair of pliers here).2 Remove the seat 511.3 Remove the shaft seal 509.Fig. 14Fig. 15K.L.506501 Loosen the screws 451 and remove the frontcover 501 and the O-ring 506.ACF 26 IMO ABACF 25 IMO AB451 Take out the two idler rotors and checkfor wear.Fig. 17Fig. 16ReassemblyA. Lubricate the idler rotors and fit them intothe pump body.ACF 27 IMO ABNote the ”open” position of the idlerrotors.Open positionFig. 188IMO AB, Telephone: 46 8 50 622 800, Telefax: 46 8 645 15 09E-mail: info@imo.se, Web: www.imo.seACF 0616GBFebruary 2002