Central Hydraulics 94780 User manual

10000LBS2-POSTLIFT
Model 94780
INSTALLATION,OPERATION
&MAINTENANCE MANUAL
IMPORTANT: READTHISMANUALCOMPLETELYBEFORE
INSTALLINGorOPERATINGLIFT

GENERALSPECIFICATIONS
SeeFigure1
ARiseHeight (ScrewPads HighestPosition) 78 1/8 (1985mm)
BColumnHeight 151 3/16 (3840mm)
COverallWidth 131 1/2 (3340mm)
DDrive-thruClearance 99 3/8 (2524mm)
EFloortoOverheadSwitch144 (3660mm)
FShortArmReach 28 1/4 -41 3/8 (730-1050mm)
GLongArmReach 34 3/8 -55 1/8 (874-1400mm)
HScrewPadHeight 5 3/8 -7 1/4 (136-185mm)
KInsideofColumns 109 7/8 (2790mm)
*MaximumCapacity 10000LBS(4545kg)
CeilingHeightRequired 152 3/16 (3865mm)
Motor2HP,SinglePhase,60Hz,220V
*Liftcapacityratings arebasedonloads equallydistributedon allfourarms.
**Liftingandloweringspeedsmayvarydependingonweightofvehicle.
12’Min.ToNearestObstruction
12’Min.ToNearestObstruction
Fig1a-GeneralSpecificationFig1b- Service BayLayout
VERTICALCLEARANCE
Checktheheightoftheareawheretheliftis tobeinstalled.Clearance shouldbecalculatedbasedon the
fullraisedheightofthelift.
Failurebypurchasertoprovideadequateclearancecouldresultin
unsatisfactorylift performance, propertydamage,orpersonalinjury.
FLOORING
Becertainyouhavetheproperconcretefloortoproperlyhandletheloadedlift.Floorshouldbein
generallygoodconditionwithnolargecracks, spallingordeterioration.
Minimumrequirementsforconcreteare4inchesminimumdepth,withsteelreinforcement,3500
PSI, curedfor28 days per localcommercialpractice.

Floorshouldbelevelwithin3/8inchovertheinstallationarea.Noanchorsshouldbeinstalledwithin8
inchesofanycrack,edge,orexpansion joint.Iftheseconditionscannotbemet,padscanbepouredto
accommodatethelift.
Checkwithlocalbuildinginspectorsand/orpermitsoffice foranyspecialinstructionsorapprovals
requiredforyourinstallation.
Failure bypurchasertoprovidetherecommended mounting
surfacecould resultinunsatisfactoryliftperformance, property
damage,orpersonalinjury.
AlwayswearANSIapproved safetygoggleswheninstallingand usingthisproduct.
ELECTRICALREQUIREMENTS
Forliftinstallationand operationforsinglephaseunits,it isnecessarytohaveadedicatedcircuit witha
25 ampcircuit breakerortimedelayfuse.
SAFETYNOTICESANDDECALS
Foryoursafety,and thesafetyofothers,readandunderstandall ofthesafetynoticesanddecals
includedhere.
READ ENTIREMANUALBEFOREASSEMBLING,INSTALLING,OPERATING,OR
SERVICINGTHISEQUIPMENT.
PROPERMAINTENANCEAND INSPECTIONISNECESSARY FORSAFE OPERATION.
DONOTOPERATEADAMAGEDLIFT.
Safetydecalssimilartothoseshownherearefound onaproperlyinstalledlift. Besurethatallsafety
decalshavebeencorrectlyinstalledon thePowerUnitreservoir.Verifythatall authorizedoperators
knowthelocationofthesedecals andfullyunderstandtheirmeaning. Replaceworn,faded, ordamaged
decalspromptly.

Donotattempttoraiseavehicleonthelift until thelifthasbeen
correctlyinstalledand adjustedas describedinthismanual.
RECEIVING
Theshipmentshouldbethoroughlyinspectedassoonasit isreceived.Thesignedbill ofladingis
acknowledgementbythecarrierofreceiptingoodconditionofshipmentcoveredbyourinvoice.
Ifanyofthegoodscalledforonthisbillofladingareshortedordamaged,donotacceptthemuntilthe
carriermakesanotationonthefreightbill oftheshortedordamagedgoods. Dothisforyourown
protection.
NOTIFYourcompanyATONCEifanyhiddenlossordamageis discoveredafterreceipt.
ComponentPackingList
DESCRIPTION QTY
DESCRIPTION QTY
PowerColumn Ass y 1 SynchronizerCable2
IdlerColumnAss y 1 HydraulicHosePack 1
PowerColumn Extension 1 PowerLockCover 1
IdlerColumnExtension 1 IdlerLockCover 1
OverheadAss y 1 HardwareBox1
RearArmAss y 2
FrontArmAss y 2
INSTALLATION
IMPORTANT:Alwayswearsafetyglasseswhileinstalling lift.
TOOLS (MINIMUMREQUIRED)
a. Banding Cutter
b. Tapemeasure,16ft
c. Chalkline
d. 4ftlevel
e. 10”adjustablewrench
f. Standardopenendwrenches7/16”-15/16"
g. Needlenosepliers
h. Hammerdrill
i. 2lbhammer
j. Torquewrench:150 footpoundsminimum
k. 12 ft. Stepladder
l. Anti-Seizelubricant(forarmpins)
LAYOUT
1. Layouttheservicebayaccordingtothearchitect s plansorownersinstructions(seeFig1b).Be
certainthattheproperconditionsexist.
2. Assemblecolumnextension tocolumnusingM12 30Hexbolt. Repeatforoppositecolumnand
extension.
3. UsingtheOverallWidth(C)asaguideline, chalktwoparallel(line1andline2)ontheconcrete
floorwithin1/8inchtolerance.
4. DeterminethelocationoftheColumnAss yon eitherchalklineandmarkthebaseplatedimension
OverallWidth(L).

Fig2 –FloorPlan
Besuretostaywithina1/4inchoveralltolerance. Thiswill eliminateany
difficultyinfinalassemblyorpossibleprematurechainwearor
misalignment.
Thechalklinelayoutis veryimportant.Ifitisnotfollowedaccurately
problems may ariseinfinalassemblyand operation.
5. Usingaliftingdevice, Erectbothcolumnassemblieswiththeinstallationlines.
ANCHORING
6. Theanchorboltsmustbeinstalledatleast8inches fromanycrack,edge,orexpansionjoint.
7. Useaconcretehammerdrillwithacarbidebit.Donotuseexcessivelywornbits orbitswhichhave
beenincorrectlysharpened.Acorebit maybenecessaryifanobstruction isencountered.
Neversubstitutewithshorter anchor.
8. Recheck “InsideofColumns”dimension,Fig1.Drilltheanchorholesusingthebaseplateasa
template. Drill throughthefloorifpossibleortoadepthof3.5inchesminimum.
9. Vacuumdustfromtheholeforproperholdingpower.
10. Shimbothcolumnstoplumbusingtheshimsprovided.DO NOTshimmorethan1/2"atany given
point.Usealevelnoless than24”inlengthtoplumbcolumns.
11. Assemblewasherandnuttoanchorwithnutjustbelowimpactsection ofbolt.Driveanchorinto
holeuntilnutandwashercontactbase.
12. Tightenpowercolumnanchorsandrecheckcolumn forplumb.Reshimifnecessary.Torqueto150
footpounds tosetanchors.
Neverremovetheliftbefore the columnsTightenedbytheanchorbolts.
OVERHEAD BEAM
13. Assembleoverheadass ytocolumnextensionusingM12 30Hexbolt.
14. Install OverheadLimitSwitchtoPowerColumn.
SYNCHRONIZERCABLES
15. Manuallyraisethecarriagesuntileachislocatedonthesecondlockposition.
16. RoutesynchronizingcablesusingFig3and attachendstocarriages joiningusingFig s4.
17. Adjustcabletensionbyadjustingeachcable sadjustmentnuts.Thecablesshouldbetightwithno
slack. Eachcableshouldbethesametension.Besureasyouaretightening thecablesthattheyhave
remainedinplaceoverthepulleys. Failuretodothis will resultindamagetothecable.

Fig3-CableRoutingFig4-Attaching
Cable
Priortooperationofliftrecheckequalizer cablesmakingsuretheyarenot
crossedorroutedimproperly.Besurethecableshaveremainedinplace
overthepulleys.
POWERUNIT& HYDRAULICHOSE
18. MountPowerUnittopowercolumnwithM8hexnuts, M8 20bolt.
19.Attachhydraulicelbowfittingtopowerunit.
20. IMPORTANT –Toinsureproperhosefittingsealwithoutdamagetothefittingfollowthis
procedureforeachhoseconnection: Screw flaredfittingonfingertight.Rotateflaredfitting11/2hex
flats(90deg.).Backtheflaredfittingoffonefullturn.Againtightenflaredfittingfingertight,then
rotateflaredfitting11/2hexflats(90deg).
21.Threadpowerunithydraulichoseintoelbowonpowerunit.RoutehydraulichosefromIdlercolumn
across OverheadtothePowerColumn.(Fig6)
22.OncethePowerUnitissecured,fillreservoirwith#10weight HYDRAULICOILONLY.Care
shouldbetakentokeepdirtorothercontaminationoutofoil.

Fig5-Hydraulics
Fig6
LOCKRELEASE
23. Install LockReleaseStudandKnob to PowerColumnLockusingoneM10 nut.
24.AttachMechanicalLock ReleaseCableAssemblytotwoColumn LockPawl(Fig 7).

Fig7Power ColumnLockIdlerColumnLock
ReleaseAssembly ReleaseAssembly
THELOCKRELEASECABLEADJUSTMENTISNOTCOMPLETEUNTILTHELIFTHAS
BEENLOWEREDAND “FINALADJUSTMENTS HAVEBEENMADE.
ARMINSTALLATION
25.Lubricatethearmpinorcarriagearmpinholewith “anti-seize”and installthearms. Insurethatthe
armrestraintgearsengageanddisengageproperly.Armrestraintsanybindingoccurs,insurethatthe
largegearmountedtothearmhasbeenfactoryinstalledtightagainstthearmpin.
ELECTRICAL
26.ConnecttheOverheadLimitSwitchCordtoPowerUnitasshowninnameplateon thePowerUnit.
27.ConnectPowerUnittosuitableelectricalsourceas showninnameplateonthePowerUnit.
28. IMPORTANT:AFTERWIRINGHASBEENCOMPLETED,TESTOPERATION OFPOWER
UNIT&OVERHEAD LIMITSWITCH. WHILE RAISING LIFT,OPERATEOVERHEAD
SHUTOFF BAR.POWERUNITMOTOR SHOULDSTOPWHENSHUTOFF BAR ISRAISED.
FINALADJUSTMENTS
29. Lowerthelifttothefloorandraisetheliftapproximatelyonefoot.
30. StartwithIdlersidefirst.Slowlyandcarefullyloosenthebleedplugontop ofthecylinderjust
enoughtoallowtheentrappedairtoescape. Repeatforpowerside.
31. Energizethepowerunitand raise6inches.Repeatpreviousstepuntilnoaircomesoutofcylinder.
32. Pressuretesthydraulicsystem.Energizepowerunit,raiselifttofullriseandcontinuetorunmotor
foradditional10seconds.(NOTE:pressurereliefwillmakeahighpitchsquealsoundforthese10
seconds.)Checkhydraulicsystemforleaks.
33. Energizepowerunit againfor10seconds. Withacleanrag,wipedownbothcylinderrods.If
lubricantisnotwipedcleanfromthecylinderrod, thecylinderwillappeartobeleaking.
34. Cyclelifttoinsurethatthelatchesoperatesimultaneously.Lowertheliftontothelocksandinsure
thatneitherlockwillwobble(itispossibleforthecarriagestoappeartoberestingon thelocks
whenactuallyonlyonecarriageisrestingonitslockandtheothercarriageisbeingsupportedby
thesynchronizingcable).

35. Lowerlifttothefloor.Pull andreleaselockreleasehandlewhilewatchingidlercolumnlock.
Adjustthreadedsleevecableadjusternutsuntilidlercolumn lockdisengagesandengagesfully.
Whenproperlyadjusted,theidlercolumnlockshouldjustcometorestagainstthebackofthe
column whenengagedandfullyoutagainstthetabwhendisengaged.
IMPORTANT:IFIDLERSIDELOCKPAWLDOESNOTFULLYDISENGAGE,DAMAGE
MAYRESULT TOIDLERSIDE CARRIAGEAND ORCABLESYNCHRONIZINGSYSTEM.
36. Tightenandtrimwireties.
37. Snaplockcoverovereachlockassembly.
OPERATIONPROCEDURE
SAFETYNOTICESANDDECALS
Thisproductisfurnishedwithgraphicsafetywarninglabels, whichare reproducedonpage3of
theseinstructions.Donotremoveordefacethesewarninglabels,orallowthemtoberemovedor
defaced.Foryoursafety, and thesafetyofothers, readand understandall ofthesafetynoticesand
decalsincluded.
OWNER/EMPLOYERRESPONSIBILITIES
Theowner/employershall makesurethatall liftoperatorsarequalifiedandtrainedinthesafeuseand
operationoftheliftinaccordancewiththemanufacturer soperatinginstructions.Theyalsoshall
displaytheliftmanufacturer soperatinginstructionsandmaintenancescheduleinaconspicuous
locationandarea,convenienttotheoperator.
Theowner/employershall establishprocedurestoperiodicallyinspectandmaintaintheliftin
accordancewiththeliftmanufacturer s suggestions. Theemployershall insurethattheliftinspectorand
maintenance personnelarequalifiedandthattheyareadequatelytrainedintheseprocedures.The
employershall maintaintheseperiodicinspectionandmaintenancerecords.
LIFTINGAVEHICLE
1) Insurethattheliftingarms areparked,outtofull drivethruposition.
2) Positionthevehicleintheservicebaysothatthevehicle scenterofgravityisonalinebetweenthe
twocolumns, andsothevehicleiscenteredbetweenthetwocolumns.
DONOTEXCEED2500POUNDSPERARM.
DONOTATTEMPTTOLIFTTHEVEHICLEWITHONLYTWOARMS,ASTHISWILL
VOIDTHEWARRANTY
INSURETHATTHEHIGHESTPOINTONTHEVEHICLEWILL CONTACTTHE
OVERHEADLIMIT SWITCHBAR
DONOTPLACETHEVEHICLE INTHE SERVICEBAYBACKWARDS.
3) Position thearmsandadapterssoallfourpadscontactthevehiclesimultaneously.
Thevehicleshouldremainlevelduringlifting.
4) Raisetheliftuntil allfourwheelsareofftheground.Testthestabilityofthevehiclebyattempting
torockthevehicle.Checkadaptersforsecurecontactwithvehicleliftpoints.Ifthevehicleseems
unstable,lowertheliftandreadjustthearms.If thevehicleisstable,raisethevehicletoaheighta
fewinchesabovethedesiredworkingheight.
5) Lowerthevehicleuntilthesafetylatchesonbothcolumnsengage.Thevehicleshouldremainlevel
whenbothlatchesareengaged.Ifonesideengagesandtheothercontinuestodescend,stop
loweringthevehicle, raiseitseveralinches, andtryagaintoengagebothlatches.
Always lower liftintolocks beforeenteringtheareabeneaththevehicle.
Alwaysusesafetystandswhenremovingorinstallingheavycomponents.

LOWERINGAVEHICLE
1) Insurethattheareaunderthevehicleisclearofpersonneland tools.
2) Raisethevehicleuntil both latchesarefree.
3) Disengagethelatchesbypulling down and holding thelockreleaselever.
4) Lowerthevehiclebydepressing thelowering valvehandle.
5) Continuetolowerthevehicleuntil thecarriagesstopagainstthebaseplate.Retracttheextension
arms, and park them.
MAINTENANCE
To avoidpersonalinjury, permit onlyqualified personnelto performmaintenanceon thisequipment.
Thefollowing maintenance pointsaresuggestionsforapreventivemaintenance program.Theactual
programshouldbetailoredtotheparticularinstallation.
1) Ifliftstopsshortoffull riseorchatters,checkfluidleveland bleedbothcylindersperInstallation
Instructions.
2) Replaceall Safety,Warning orCaution Labelsifmissing ordamaged(See Installation instructions
page3.)
Daily
1) Keepliftcomponentsclean.
2) Checkforlooseorbroken parts.
3) Check hydraulicsystemforfluid leaks.
4) Check adaptersfordamageorexcessivewear. Replaceasrequired with genuineLiftsparts.
5) Check thelockreleaseactivation.
Weekly
1) Check synchronizercablesand sheavesforwear. Replaceasrequiredwith genuineLiftsparts.
2) Check lockreleasecableadjustmentperInstallation Instructions.
IMPORTANT:IFIDLERSIDELOCKPAWLDOESNOTFULLYDISENGAGE,DAMAGE
MAYRESULTTOIDLERSIDECARRIAGEANDORCABLESYNCHRONIZINGSYSTEM.
3)Check synchronizercabletension perInstallation Instructions.Adjustifnecessary.
Monthly
1) Torqueconcreteanchorboltsto 80ft-lbs.
2) Checkoverheadshutoff switch. Whileraising lift,operateoverheadshutoff bar.PowerUnit motor
should stop when barisraised.
3) Lubricatecarriageslidetrackswith heavyviscousgrease.(Greaseall (4)cornersofboth columns.)
Ifanyproblemsare encountered, contactyourlocalservicerepresentative.