LeROIGasCompressors
ByRotaryCompressionTechnologies,Inc.
ISO9001-2000
InstallationOperationsMaintenanceandServiceGuide
RotaryScrewCompressorModels:HG10HGF10HG12HGF12HGS17HGSF17HG17HG24LG30LGL30
RCT-INST001Rev6-8/08ECN48316
ROTARYCOMPRESSIONTECHNOLOGIES,INC.THANKSYOUFORPURCHASINGLEROIGASCOMPRESSORS,MODULESANDPARTSTableofContents
SafetyInformationandWarnings_________________________1
ProtectingYourCompressorBeforeService_________________2
IdentifyingYourCompressor_____________________________3
UnderstandingYourCompressor_________________________4
TheCompressorSystem______________________________5-6
OilFlowandOrificeSizing____________________________7-10
VariableViAdjustment______________________________11-13
Versatrol(CapacityControl)__________________________14-15
OilandRelatedItems_________________________________16
Installation________________________________________17-18
InstallationComponentLocation________________________19
OperationandPreventiveMaintenance____________________20
ServiceProcedures-Components_____________________21-29
RebuildKits_________________________________________30
Website____________________________________________31
ContactList_________________________________________32
ServiceDiagnosis____________________________________34
Warranty___________________________________________35
SafetyInformationandWarnings
LeROIgascompressorsaredesignedwithsafetyinmind.However,thereisnosubstitute
forsafeoperatingprocedures.Throughoutthismanual,therewillbeadditionalNotes,
CautionsandWarningsintendedtoprotecttheoperatorandtheequipment.These
additionsarenotallinclusive.Extremecaremustbeexercisedwhenoperatingorservicing
thisequipment.ACarefulOperatoristheBestInsuranceAgainstanAccident
Theoperatorandorservicepersonshould:
Beknowledgeableofonesequipment.
Developsafeworkhabits.
Neveroperateaunitwithoutguardsandshieldsinplace.
Neveroperateaunitthatisnotproperlyelectricallygrounded.
Neverserviceaunitwiththepressureinthereceiver-oilreservoirunless
followingspecificoperationmanualinstructions.
Neverserviceaunitwithoutdisconnectingandlockingouttheelectrical
powersupplyunlessfollowingspecificoperationmanualinstructions.
Takeallnecessaryprecautions,whenadjustingcontrols,etc.,toprevent
electricalshock.
Takeallnecessaryprecautionswhenworkingwithflammablegasestoprevent
fireorexplosion.
1
ProtectingYourCompressorBeforeService
THISCOMPRESSORISSHIPPEDWITHOUTOIL.ALTHOUGH
RESIDUALOILFROMTHEFACTORYTESTISSUFFICIENTTOPREVENT
RUSTDURINGSHIPPING,ITDOESNOTPROVIDEADEQUATE
PROTECTIONFORSTORAGE.
IFTHECOMPRESSORWILLNOTENTERSERVICEWITHINONEWEEKOFBEING
RECEIVED,COMPRESSOROILMUSTBEADDEDTHROUGHTHEGASINLETSOTHAT
ITSLEVELISATLEASTASHIGHASTHEBOTTOMOFTHEINLETCAVITY.ALLOWA
FEWMINUTESFORTHEOILTOFILLINTERNALCLEARANCESTHENADDTOBRING
LEVELBACKUP.REINSTALLTHEINLETCOVERPLATEANDBOLTITDOWN
SECURELY.THEDRIVESHAFTMUSTBEROTATEDTURNMONTHLYTOINSURE
THATALLMOVINGPARTSHAVEANOILCOATING.
2
IdentifyingYourCompressor
LeROIgascompressorshaveanameplatethatprovidesvaluableinformation
onyourcompressor.Thisinformationisneededfororderingpartsand
conversionkits,aswellasforaccessingwarrantyinformationand
understandingthedesignofthecompressor.BelowisaModelDesignation
charttohelpyouidentifyyour
compressor.
3
UnderstandingYourCompressor
YourcompressoriseitheraLG(LowPressure)orHG(HighPressure)singlestage,
positivedisplacement,oil-floodedscrewcompressor.Therearetwobasicgeneral
configurations;geared(Figure1)andnon-geared(Figure2).
Figure1-gearedcompressorFigure2-Typicalnon-gearedcompressor
Oil-floodingprovidescooling,lubricationandsealinginthecompressor.Theoilmustbecooledusingeitherwaterorairinaheatexchangerthatisproperlysizedforalloperatingconditions.
Gearedunits(Figure1)comestandardwithintegralgearingtoincreaseordecreasethespeedinternally,allowingfordirectconnectionwithstandarddrivers.Thedrive(input)shaftisanintegralextensionofthemalerotor.Compressorswithgearsuseanindependentinputshaft,commonlyreferredtoasajackshaft,mountedonrollerand/orspecialdeepgrooveballbearings.Thegearmountedonthejackshaftdrivesthegearmountedonthemalerotorandthemalerotormesheswithanddrivesthefemalerotor.
Figure3showsthedirectionoftherotorrotationandthegas/oilflowthroughthecompressor.Notethatthisflowisbetweentherotorsandtheinsidediameter(boreofthecylinder).
Theuncompressedgasentersthecompressorattheinletflange,passesintothefrontbearingretainer,andentersthecylinderboreatthefront(inlet)end.(Figure3).Asthegaspassesapredeterminedinletcut-offpointinthecylinder,compressiontakesplaceduetodecreasingrotortocylindervolumeastherotorsturn.Gasatthedesiredpressureisdischargedattherear
Figure3-Oil/GasFlow-Typical
(discharge)end.Oilisinjectedintothecompressoratspecificlocationsforcooling.
4
TheCompressorSystem
TheLeROIgascompressorisonepartofthecompressorsystem.Thecompressorcombinedwiththedriverformstheheartofthesystem.However,theothervitalelementsareessentialtoensuretheheartofyoursystemcontinuestooperate.SuctionScrubber(withfiltration,ifnecessary)Thisisrequiredtopreventthecarryoverofliquidsintothecompressor.Filtrationisoftennecessary,especiallyinvacuuminstallations,topreventdebris(e.g.ironsulfides)fromgettingintothecompressor.Gas/OilSeparatorThegas/oilseparatorisakeycomponentofthecompressorsystem.Theseparatorshouldbedesignedtohandlethemaximumcapacityatthelowestdischargepressureandthehighestdischargetemperature.Itisimportantthatthevesselandcoalescingfilteraresizedproperlytoinsureoptimumgasandoilseparation.Theseparatoralsoactsastheoilreservoir(oilsump),withtheoilcollectinginthebottom.OilCoolerTheoilcoolerisanair-cooledorwater-cooledheatexchangerthatissizedtosuitthesize(capacity)ofthecompressorbeingcooled.Thecoolershouldbedesignedtohandletheworstoperatingcondition,whichisusuallybasedonthelowestsuctionpressureandthehighestdischargepressure.However,theoilflowplaysacriticalroleindeterminingtheheatrejectionoftheoilcooler.MinimumPressureValveTheminimumpressurevalveisrecommendedtomaintainaminimumpressureinthegas/oilseperator.Itisespeciallyimportanttousethisdevicewhenthepossibilityexiststhatthesystempressuremaynotbesufficienttomaintainpressureintheseperatortoachieveadequategas/oilseperation.ThermalBy-PassValveTheinjectiontemperatureoftheoilusedtocool,seal,andlubricatethecompressoriscontrolledbythethermalby-passvalve.Asthenameimplies,thisvalveallowspartoralloftheoilflowtoby-passtheoilcooler,dependingonthetemperatureoftheoilleavingthecompressor.Thisvalvecanbecontrolledthermostaticallyorwithmoresophisticatedtemperaturecontrolvalvewheremoreprecisecontrolofoiltemperatureisrequired.
5
TheCompressorSystem(Continued)
OilFilterItisextremelyimportantthattheoilinjectedintothecompressorbeascleanaspossible.Theoilfiltershouldbegenerouslysizedtohandlefulloilflow,andshouldhaveafilterelementthatwillremoveparticlesdownto10micron.Ifthecompressorisinanapplicationwherecontinuousoperationisimportantorwherethefilterwillgetdirtyinashortperiodoftime,itisrecommendedthatadualfilterarrangementbeused.InstrumentationandControlsThecompressorhasoperatinglimitationsthatmustbemonitored.Protectivedevicesarerequiredtotheprotectthecompressorfromexperiencingacatastrophicfailure.Theseinclude,butarenotlimitedtohightemperatureandpressure,aswellasliquidlevelswitchesinthesuctionscrubberwherethereisapotentialforlargeamountsofliquidinthegasstream.
Figure4TypicalBasicPipingDiagram
6
OilFlowandOrificeSizing
Asmentionedpreviouslyinthismanual,rotaryscrewcompressorsrequireoillubricationof
thebearings,cylinderandrotors.Bearinglubricationisnecessaryforlonglife.Cylinderand
rotorlubricationdoesthreethings:
1.Reducesfrictionbetweentherotors
2.Providesasealbetweenthecylinderandrotorstoreducegasslippage.
3.Coolsthegas.
Incertainapplicationsthepressuredifferential(discharge-suction)issuchthatanoilpumpisnotrequired.
However,iftheapplicationhasalowerpressuredifferentialthananoilpumpwillberequired.Itis
importantfortheapplicationtobereviewedespeciallyiftheunitwillbemovedfromonesitetoanother
resultingindifferentconditions.
Figure5TypicalOilFlowFigure6OrificeInstallation
LeROIgascompressorshaveanoilinjectionmanifoldthatdistributesoilsuppliedbythepumporpressure
differential.Theorificecreatesarestriction.Asmallerorificeresultsinagreaterrestriction,whichforces
moreoiltothebearingandlessoiltotherotors.Thegoalistocreateaproperbalanceinthecompressor
forreliableoperation.
7
OilFlowandOrificeSizingPumpsareinstalledatthefactorybasedonpackagerinstructionsorspecifiedoperating
conditions.EveryLeROIcompressoristestedatthefactorytoensurereliable
operation.Aftertesting,thestandardorificeoranorificespecifiedbythecustomeris
installedintheunit.
ITISALWAYSGOODPRACTICETOVERIFYTHATTHEPUMPANDORIFICE
SELCTIONARECORRECTFORTHEFIELDOPERATINGCONDITIONSDURING
COMMISSIONINGOFTHECOMPRESSORPACKAGE.
Thereareseveralsizeoptionsforeachcompressor.Intheeventthatanorificeisneededandoneisnot
readilyavailableonecaneasilybecreated.Simplydrillingaholeinasolidplugwillprovidetheorifice.Itis
alsoimportanttonotethatyoumayneedtocreateanorificeintheeventyourdesiredsizeisinbetween
manufactureravailablesizes.
Temperature/Viscosity/Pressure
RefertoFigure7fortemperatureandpressuremethodsandlocations.
Gasdischargetemperaturerange:175-210oF
(Temperaturemustbehighenoughtoreducecondensationinseparatortank.)
Hightemperatureshutdown:230oF
(Switchmustbelocatedbetweencompressordischargeflangeandseparatortankinlet.)
WARNING!NEVEREXCEED230oFDISCHARGE
8
Temperature/Viscosity/Pressure(Continued)
ForMostSituations:
Temperaturerise-Fromoilinjectiontogasdischarge:3040oF
Forheavygasstreams,a30-40Ftemperaturedifferencemaynotbepossible
TemperatureriseFromoilinjectiontodischargebearingoildrain:15oF
WARNING!NEVEREXCEED20oFBEARINGRISE
Oilpressuredifferencegasinletversusoilinjection:60-100psi
(Whengasdischargepressuresare50psigorless,itmaynotbepossible
toachieve60psigoilpressure.Thatisacceptableifallotherspecificationsaremet.)
Oilviscosityatinjectiontemperature:13-40cSt
(Refertooilsupplierdataforviscosityatactualinjectiontemperature.)
9
InstrumentDataLocation
Infrared(IR)temperatureguna.oilinjectiontemperatureb.gasdischargetemperaturec.dischargebearingoildraintemperature(A)pipe(B)pipe(C)tube(goesdownonsomemodels)
Pressuregageortransducer1d.gasinletpressure(D)inletpipe
Pressuregageortransducer2e.oilinjectionpressure(E)injectionmanifold
FieldEvaluationofPump&OilInjectionOrificeSize
Equipment&MeasurementLocation
Althoughotherpermanentinstrumentationisnecessaryformonitoringoverallpackageperformance,thefollowingarespecificallyforthepurposeofevaluatingthepumpandorificesize.
Table2Instruments&MeasurementLocationsTemperaturemeasurementsatpointsA,B,andCshouldbemadeonsectionsofpipeortube(notfittings)asclosetothecompressoraspossible.
PressuresatpointsDandEshouldbeasclosetothecompressoraspossible.ThereistypicallyanunusedportontheoilinjectionmanifoldforE.PointDislocatedinthepackageinletpiping.Ifpressuresarenottakenatthesespecificlocations,theyshouldatleastbelocatedonthecompressorsideofanymajorrestrictionssuchasafilter.
WHENTOCHANGEAPUMPORORIFICE
morethan40F?Isdifferencebetweengasdisch&oilinjectiontempo
No
Yes
Largerpumpororificeisrequired.Useperformanceprogramtoresize
lessthan30F?A
E
D
Isdifferencebetweengasdisch&oilinjectiontempo
No
Yes
Isgasmolecularweighthigh?
No
Yes
OK
than210F?tempmorethan20F?noCB
Figure7-Temperature/PressureMeasurementLocationsAlthoughprobesinserteddirectlyinthegasoroilstreamwillgivemoreaccurateresults,aninfrared(IR)temperaturegunisrecommendedforthisprocedure.Sinceaprobecannotbereadilyusedonthedischargebearingdrain,theIRgunwillallowabettercomparison.
ForbestresultswhenusinganIRgun,slowlymovingtheIRgunovertheitemtoobtainthehighesttemperature.Becarefulnottopickuptemperaturesfrombackgroundobjects.
Isgasdischtempmoreo
No
Isdiffbetweenbearingoildrain&oilinjectionoORIsoilinjectionpressurelessthan60PSIabovegasinlet?(seeNote)
No
Isdiffbetweenbearingoildrain&oilinjectiontemplessthan3F?ORisoilinjectionpressuremorethan100PSIaboveinlet
Yes
Yes
Smallerpumpororificeisrequired.Useperformanceprogramtoresize
Reduceoilinjectiontempbychangingcoolerorthermostat
Installsmallerinjectionorifice.
Note:Whengasdischpressureisbelow60PSIitmaynotbepossibletoachieve60PSIoilpressure,evenwiththesmallestorifice.Thisisacceptableifthebearingoildraintempiswithinspec.
Installlargerinjectionorifice.
pressure?
10
VariableVIAdjustment
VariableViisusedtominimizethepowerrequiredbythecompressor.Itdoesnotchangeflowdirectly,butcanallowanincreaseinflowthroughmoreefficientuseofpower.Viisthevolumecompressionratioofacompressor:V1/V2.TheinternalViofthecompressorisdeterminedbythesizeofthedischargeport.AsmallportcausesgastobereleasedlaterinthecompressioncycleresultinginahigherinternalVi,whilealargerportallowsthegastobereleasedearlierinthecycleresultinginalowerinternalVi.TheidealViforanapplicationcanbecalculatediftheinletanddischargepressuresandk(Cp/Cv)ofthegasareknown.
ThecompressormakesthemostefficientuseofpowerwhentheinternalViequalstheidealVi.Forexample,iftheinternalViishighbuttheidealViislow,thegasiscompressedtoapressuregreaterthantheexternalpressurepriortobeingreleased.Ontheotherhand,iftheinternalViislowbuttheidealViishigh,gasmomentarilyflowsbackwardintothecompressorandisre-compressed.Bothofthesescenariosresultinwastedenergy.
ThestandarddischargehousingsoftheHG17,HG24,LG30,andLGL30compressorshavea4.4Viport,butarefittedwithfourvalvesthatcanbeopenedtoincreasethetotalsizeofthedischargeport,sothatthefollowinginternalViscanbeachieved.
Vi=4.4(HIGH)AllvalvesclosedVi=3.0(MEDIUM)Twoinnervalvesopened(twooutervalvesclosed)Vi=1.9(LOW)Allvalvesopened
InstructionsTHECOMPRESSORCANBEVERYHOT!PROTECTYOURSKINWHENADJUSTINGARUNNINGORHOTCOMPRESSOR.
DONOTTIGHTENVALVES.Valvesarenotintendedtobeclosedoropenedbytightening.Doingsomaydamagethevalveand/orcompressorrotors.Thevalveshouldonlybeturneduntilittouchestheendofitsstrokeandthenbackedoffabout1/16ofaturn.
ThefirstitemtobeperformedistodeterminetheidealVioftheapplication.
Therearethreewaystodothis:(1)Trialanderroradjustthevalveswhilemonitoringhorsepowerdraw.(2)UsetheLeROIScrewCompressorPerformanceProgrambyalternativelyselectingHigh,Medium,andLowViontheCompressortab,andseewhichresultsinthelowesthorsepower.(3)CalculatetheidealVimathematically(orfromaspreadsheetcalculatoravailablefromwww.leroigas.com):Vi=(P2/P1)1/k
11
IdealViSelectInternalVi
Greaterthan3.5HIGH(Allvalvesclosed)
Greaterthan2.5,butnotgreaterthan3.5MEDIUM(Innervalvesopen,Outervalvesclosed)
Lessthanorequalto2.5LOW(Allvalvesopened)
P1andP2mustbeinPSIA,andbeatthecompressorinletanddischargeflanges.Besuretoaccountforpackagepressuredrops,whichdecreasetheinletpressureandincreasethedischargepressureatthecompressorflanges.Asaquickreference,foratypicalnaturalgaswithk=1.26,thepressureratiosthatcorrespondtoavailableinternalVisare:
ViP2/P14.46.53.04.01.92.2
SincetherearethreeavailableinternalVisettings,eachmustcoverarangeofidealapplicationVis:
AfterDeterminingtheappropriateViratioperformthefollowingstepstoadjusttheinternalViratio:
Figure8:CompressordischargeendshowingfourclosedVivalvesfittedwithspeciallocknut-threadprotectors.
Compressormodelsmayalsohaveanoilpumpmountedabovethetwovalvesontheleft.
Figure9:Removelocknutswithwrenchbeforemakingadjustments.
Itisnotnecessarytoremovetheouterlocknutsifonlytheinnervalvesarebeingadjusted.
Themodelrepresentedinthefigurehasapumpandispartofapackage.
12
Figure10:ForMEDIUMVi,turntheinnervalvescounterclockwiseuntiltheyarefullyout.
DONOTFORCETHEVALVES.Oncetheytouchtheendoftheirstrokereversethemby1/16ofaturn.Thisalsoapplieswhenclosingvalves.
Figure11:ForLOWVi,inadditiontoturningthevalvesforMEDIUM,turntheoutervalvescounterclockwiseuntiltheyarefullyout.
DONOTFORCETHEVALVES.Oncetheytouchtheendoftheirstrokereversethemby1/16ofaturn.Thisalsoapplieswhenclosingvalves.
Figure12:Reinstallandtightenlocknutsjustsnuglywhileholdingvalvessotheydonotturn.ThevalvepositionsinthisfigurearelowVi.Notethatallofthevalvesareout.PERIODICALLYLUBRICATETHEVALVESTEMTHREADSWITHGREASETOPREVENTRUSTANDALLOWFORFUTUREADJUSTMENT.
Figure13:ThevalvesinthisfigureareinaMEDIUMViposition(innervalvesout,outervalvesin).Itisnotpossibletoholdtheoutervalvewhiletighteningthelocknutjusttightenthelocknutlightlytopreventjammingthevalve.
13Figure14-HG12showingoneoftwoVersatrolpockets.Secondidenticalpocketisontheoppositeside
Figure15HG17showingfourVersatrolpockets.HG24arrangementisthesame(Pockets2and4areunderthecompressor)
Figure16LG30showingfourVersatrolpockets.(PocketsonHG17andHG24areontheotherside)
VersatrolCapacityControl
Versatrolcapacitycontrolisusedtoregulatecompressorflowandreducepowerrequirements.Versatrolconsistsofasetofpressureactuatedvalveassembliesmountedonthesideofthecompressor.Whenopened,thesevalvesallowgastoleavethecompressioncycleandreturntothecompressorinletpriortocompressionanddelivery,thusreducingflowandhorsepower.Avalveisclosedbyapplyingactuatingpressureandopenedbyreleasingactuatingpressure.Thiscanbeusedtorampupthecompressorduringstartup.Startthecompressorwithalltheportsopenthenclosethem.
Theby-passvalveassembliesaresometimesreferredtoasunloadersorpockets.
VersatrolisavailableontheHG12andlargermodels.Duetothesmallcylindersize,theHG12hastwovalvesandanexternalby-pass(Figure14).Alllargermodelshavefourvalveswithaninternalby-pass
(Figures15and16).Dependingonactualoperatingconditions,Versatrolcanreduceflowbyapproximately50%andpowerby25%.Versatrolcanbeoperatedinstepsorstepless.
StepControl-eachvalveisfullyopenedofclosed.Foreachvalveopenedinsequence,capacityandpowerwillbereducedbyapproximately13%and6%respectively.
SteplessControl-eachvalveispositionedanywherebetweenfullyopenedandfullyclosed,thusthrottlingtheby-passandallowinginfinitelyvariableflowcontrol.Steplesscontrolisachievedthroughtheuseofelectroniccontrols,whichmonitorsflowandpower,andadjustsvalveposition.LeROI-RCTdoesnotsupplycontrolsystems,buttheyarecommerciallyavailable.
14
VersatrolCapacityControlContinued
Actuation:TheVersatrolvalvescanbeoperatedwithpressurizedair,gasorlubricatingfluiddependingonwhetheritissteporsteplesscontrol.Theactuationpressureshouldbethesameornearlythesameasthecompressordischargepressure.Thevalvesshouldbeopenedinthe1-2-3-4sequenceandclosedinthe4-3-2-1sequence,excepttheHG12.TheHG12canbeopenedorclosedinanysequence.
Oilmaybeusedforeithersteporsteplesscontrol.Oiltakenfromthegas/oilseparatororaftertheoilpumpshouldhaveadequatepressuretoallowVersatrolactuation.Oilshouldalwaysbefilteredpriortoenteringthecontrolsystem.
Airorgascanbeusedforstepcontrolsystemsonly.Airandgasarecompressibleandwillnotallowaccurateorquickcontrolresponses.Aircanbeusedforsteplesscontrolsystemswithoutaproblem.
Asmentionedpreviously,thevalveisunloadedoropenedbyreducingthecontrolpressure.Whenthecontrolpressureisreducedthehigherpressureinsideofthecompressoropensthevalve.Therefore,itisimportantfortheactuationpressureduringtheunloadingstagetobelowerthanthecylinderpressure.Toensurethisoccurs,theVersatrolvalveassemblyshouldbeventedtothecylinderinletifactuatedbygasoroil.Iftheairisusedinthecontrolsystemthenitwillhavetobeventedtotheatmosphere.
NEVERUNDERANYCIRCUMSTANCESVENTGASOROILTOTHEATMOSPHERE
NEVERUNDERANYCICUMSTANCESVENTAIRINTOAGASCOMPRESSOR
Anoversightthatoccasionallyoccursisthetestingofacompressoronairwithavacuuminlet.IftheVersatrolvalveisventedtoatmosphericpressure,thevalvefrequentlydoesnotopenbecausethepressureinthecylinderislessthanatmosphericpressure.
Plumbing:Steelorstainlesssteeltubingandfittingsshouldbeused.Coppertubingisnotrecommended.Copperandgascanreactandreducethereliabilityofyoursystem.
TubingrunsshouldnotbeanylongerthannecessaryinordertoavoidreducedresponsetimesbetweencontrolsandtheVersatrolvalves.Tubingshouldbe3/8.Tubingsizeincreasesinimportanceincoldenvironmentsorwhentubingrunsexceed4feet.
ControlValveSelection:SinceactuatingpressureisappliedandreleasedthroughthesameportintheVersatrolassembly,itisnecessarytouseavalvethatcanbeturnedbetweenthepressuresourceandavent(cylinderforoilandgas,atmosphereforair).Generally,athreeorafour-wayvalveisrequired.Three-wayvalvesareagoodchoiceformanuallyoperatedVersatrol.Four-wayvalvesarebestforautomatic,steplesscontrolsystems.
15
OilandRelatedItems
ThelubricationsystemisvitalforreliableoperationofLeROIgascompressors.Followingtheseguidelinesaboutoilandrelateditemswillensureyearsofreliableservice.
Start-Up:Priortostart-upthecompressorshouldbepre-lubed.
OilFilter:Checkafterfirst100hours.Changeonceamonthifcontinuouslyoperatedorevery1000hoursotherwise.Filtermustbechangedwitheveryoilchange.Attheminimumadifferentialpressureisrecommendedfortheoilfilter.Adifferentialgaugewithanalarmisadvised.
Viscosity:Thepackager/userisresponsibleforselectingoilthatiscompatiblewiththegas,andcanmaintainminimumviscosityattheoperatingconditions.Therecommendedviscosityis15centistokesregardlessoftheoperatingconditions.Theminimumviscosityis13centistokesregardlessoftheoperatingconditions.
Oilviscositygreaterthan15centistokescanaffectperformance,especiallyhorsepower.
Analysis:Oilshouldbeanalyzedonaregularbasis.Oilshouldbecheckedonceaweekforthefirstmonth,withatleasttwoofthosesamplesbeinganalyzed.Ifthefirstmonthofsamplesisokaythentheanalysiscanbereducedtoonceamonth.Increasesinwatercontentandmetalsshouldbewatchedclosely.Allreputableoilsuppliersandmanufacturerswillanalyzeoilsamplesatnocharge.
Recirculation:Itisimportantthattheoilrecirculatesatleasttwotimesperminute,especiallywithheavierhydrocarbonandwatersaturatedgases.Thiskeepstheoiltemperaturehigher,therebyreducingthepossibilityofhydrocarbonscondensingandaffectingtheviscosityoftheoil,orhavingwatercondenseandcauselubricationproblems.
Strainer:Whenthereisanoilpump,itisrecommendedthataY-strainerbeinstalledbetweentheseparatorandthesuctiontothepump
ItisrecommendedthataY-strainerbeinstalleddownstreamofwheretheoilleavesthedischargebearingretainer,andwhereitisinjectedinthecasing.Thiswillreducethepossibilityofacatastrophicfailureifabearingfailsonthedischargeend.
Coalescing:Thecoalescingelementinthegasoilseparatorshouldbemonitoredwithadifferentialpressuregauge.Thiselementshouldbechangedasrequired.Itshouldbecheckedatleastonceayear.Itisimportantthatthefilterelementhaveenoughsurfaceareatoremoveoilfromthegasstream.
GasFiltration:Gasfiltrationisrecommended.Particulateinthegasstreamcancontaminatetheoilandcauseprematurefailure.
Temperature:Oiltemperatureinandoutoftherear-bearingretainershouldbecheckedregularly.Ifdifferentialisgreaterthan30F,theremaynotbesufficientlubricationforthatare.Thiscouldalsobeanindicationofwornbearings.
16
Installation
Thecompressorandprimemovermustbemountedonarigidframesothatthedrive,piping,etc.arenotsubjecttostrainand/ormisalignment.Mountingholesareprovidedtosecurelyattachthecompressor.
Themountingsurfacemustbeasmooth,levelsurfacethatwillsupporttheweightofthecompressorandhandletheassociatedvibration.Shimsmustbeinstalledbetweentheframeandthemountingsurfacetoeliminatestrainontheframe.
Adequateairflowforcoolingmustbeprovided.Uncontrolledrecirculation(fromunittoothersource)ofhotairmustbeprevented.Refertofigure17foratypicalinstallation.
Figure17TypicalInstallation
17
Installation(Continued)
Drive:Severaltypesofdrivecouplingsmaybeused.However,directflexibleanduniversaljointtypesarerecommended.Whenusingadirectflexiblecouplingfollowthecouplingmanufacturersinstructions.Asageneralrule,forthistypeofcoupling,thealignmentshouldbeasnearinlineaspossible.Inanycase,couplingmisalignmentmaynotexceed1/32paralleland/or2angularmisalignment.Refertofigure18.
THEDRIVECOUPLING(COUPLING,SHAFT,BELTS)MUSTBECOVEREDBYASUITABLEGUARDORSHIELD.ALLGUARDSANDSHIELDSMUSTBEINPLACEWHEN
Figure18
Dependingonthesizeofthecompressor,itmaybepossibletobeltdrivethecompressor.
However,thereisalimittothepowerthateachcompressorcansustain.Referbelow:
HG10;30HPHGF10;50HPHG12;50HPHGF12;50HPHGSF17;50HP
Iftheshafthorsepowerexceedsthesenumbersthenthecompressormusthavethepulleymountedonajackoridlershaft.Iftheidlerpulleyhasaratiootherthan1:1youwillneedtoensureyouhavenotexceededthe
OPERATINGTHEUNIT
Figure19
speedratingonthecompressor
Figure20
18
Installation-ComponentLocation
Thecomponents(Figure17)ofagascompressorsystemshouldbemountedontheframetomakeservicingtheunitasconvenientaspossible.Oilpipingandhosesshouldbelocatedandfastenedtopreventaccidentaldamage.Allmovingparts(coupling,belts,fans,etc)musthaveguardsorshieldsinstalled.
CompressorInlet:Theinletpipingmustbecleanandfittedwithsuitablefilters,(scrubber,moistureseparator,etc.)topreventforeignmatterfromenteringthecompressor.Allpipingandothercomponentsmustbeadequatelysupported.Provisionsmustalsobemadetoinstallothercomponentssuchasgages,valves,temperaturemeasuringandpressurecontroldevices.
CompressorDischarge:Thedischargelinebetweenthecompressorandtheoilreceivermustbeaslargeaspermittedbythesizeofthecompressordischargeopening.Thedischargelinemustneverbereducedinsize.Thedischargelineshouldbeasshortaspossiblewiththeminimumnumberofbendsandfittings.
Ahighdischargetemperatureshutdownswitch,wiredintotheprimemovercontrols,mustbeinstalledinthedischargeline.Thistripswitchshouldhaveamaximumtripsettingof230F.
Provisionsmustalsobemadetoinstallothercomponentssuchasgauges,valves,temperaturemeasuringandpressurecontroldevices.
Separatorout:Thepipingfromtheseparatorout(minimumpressurecheckvalve)mustbeaslargeaspermittedbytheoutletportoftheminimumpressurevalve.Thelengthmustbeasshortaspossiblewiththeminimumnumberofbendsandfittings.
Thepipingmustbeadequatelysupportedandfastenedsecurely.
Provisionsmustbemadetomountandconnectothercomponentsinthislinesuchasaftercooler,valves,pressureandtemperaturesensingdevices,etc.CompInstrumentation:Pressuregaugesshouldbeprovidedtomonitorthepressuredrop(restriction)acrosstheoilfilterelement,separatorelement,andoilcooler.
Asinglegaugeforeachisrecommended,withamanifoldandshutoffvalves,toredbothupstreamanddownstream(inletandoutlet)pressures.Thislimitsthepossibilityofgaugeerroraffectingpressurereadings.
19
OperationandPreventiveMaintenance
Satisfactoryperformanceofastationaryscrewcompressorrequiresagoodpreventivemaintenanceprogram.Thefollowinginformationisprovidedasaguideforsuchaprogram.
StartUp:
1.Serviceallequipment(filters,moistureseparators,primemover,etc.)followingtheequipmentmanufacturersinstructions.2.Draincondensate(water)fromtheoilreservoir.Closethedrainvalvesecurelywhenoilappears.3.Checkthecompressoroilreservoirfluidlevel.Addoilasnecessarytothecorrectlevel.Donotoverfill.4.Makecertainadequateventilationandcoolingwater,ifrequired,isprovided.5.Starttheunitbyactuatingtheelectricalcontrolsorstartingtheenginefollowingtheequipmentmanufacturersinstructions.6.Observetheunitforleaks,unusualnoise,vibration,etc.(Shutdowntheunitandcorrectasrequired.)7.Observeallinstrumentationforproperreadings.
ShutDown:
1.Stoptheprimemoverfollowingmanufacturersinstructions.
PreventiveMaintenance:
1.EnsuretheoilisproperlymaintainedpertheOilandRelatedItemssectionofthismanual.2.Visuallyinspecttheentireunitforleaks,loosehardware,etc.asoftenasfeasible.Correctasrequired.3.Serviceallequipment(filters,moistureseparators,etc.)followingthemanufacturersinstructions.4.Drainwater(condensate)fromtheoilreservoir.Closethedrainvalvesecurelywhenoilappears.5.Checkthecompressoroilreservoirlevel.Addcorrecttypeofoilasrequired.Donotoverfill.6.Withtheunitrunning,observetheoilpressuregagesandcomparereadings(filterin-filterout)Adifferenceinpressurereadingsof15PSIormoreindicatesthatthefilterelementmustberenewed.7.Withtheunitrunningobservethegaspressuregaugesandcomparereadings.Apressuredropacrosstheseparatorelementof15PSIormoreindicatestheseparatorelementisrestricted.Iftherestrictioniscausedbydirtorotherforeignmatter,renewtheseparatorelement.
Oilsaturationcancauseexcessiverestrictionacrossaseparatorelement.Alwayschecktheseparatordraintubeandlineforrestriction,thecheckvalve(installationandcondition)andcleanorrenewthedrainlinefilterbeforecondemningaseparatorelement.8.Removesurfacedirtanddustfromtheoilcoolerandaftercooler.
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ServiceProcedures-Components
BEFOREREMOVINGANYCOMPONENTSSHUTTHEUNITDOWN,CLOSEALLINLETANDDISCHARGESHUTOFFVALVES,RELIEVEALLPRESSUREBYPUMPINGOUT.MAKECERTAINTHEPRESSURESYSTEMREMAINSVENTEDTOATMOSPHERE.DISABLE,LOCKOUTANDTAGTHEPRIMEMOVER.
CompressorService:Thecompressorfortheseunitsisservicedonlyasacompleteassemblyusinganeworfactoryrebuiltcompressor.Partsavailableforfieldserviceincludetheinputshaftrotaryoilsealandthesealretainergasketoro-ringseal.
InputShaftSealReplacement:
Thecompressorinputshaftrotarysealmaybereplacedasfollows,RefertoFigure21:I.Makecertaintheunitcannotbestartedandsystemhasallpressureremoved.II.Removeanycouplingguardsand/orshields.III.Cleanthefrontofthecompressorthoroughlytopreventdirtfromenteringthecompressor.IV.Disconnectthedrivecoupling.
Ifthecompressororprimemovermustbeunfastenedfromtheframe,saveandmarkallmountingshimsifany,forreuse.
NOTE:AlwaysverifySealKitP/Nbyreferringtoappropriatecompressorassembly/partsdrawing.
Thesealkitincludes:(1)Rotaryshaftsealassembly(1)100gritsiliconcarbideemerycloth(1)Technical/ServiceBulletinTSB0802(1)TubeP80RubberLubricantEmulson
Thefollowingprocedureistobeusedforinstallingallrotaryfacetypeshaftseals:
Followthemaintenancemanualprocedureforthespecificunitbeingserviced,toexposetherotarysealretainer.
Disconnectthelubricationline(tube)fromthesealretainerorbearingretainer(dependsonunitmodel).
NOTETHEFITTINGINSTALLEDINTHESEALORBEARINGRETAINERORTHEOILPASSAGEINTHERETAINER,WHICHDELIVERSOILTOTHESEAL,MAYBERESTRICTEDORORIFICED.
INSPECTTHISFITTINGANDOILPASSAGEANDTHEATTACHINGLINE(TUBE)TOMAKECERTAINTHEORIFICEISCLEANANDTHATTHETUBEHASBEENCORRECTLYINSTALLED(NOEXCESSIVEFITTINGCRUSH).
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SOMEFITTINGSOROILPASSAGESMAYHAVEARESTRICTINGORIFICE.IFONEISPRESENT,INSUREORIFICEISREINSTALLED.
Removethesealretainerandsealassemblyasdescribedinthemaintenancemanualfortheunitbeingserviced.Discardtheoldsealparts.(Figure1)
Cleanthesealretainerandsealcavityinthebearingretainerthoroughly.(Figure2)
Toprotecttheexposedshaftbearingsfromdirt,dampenalintfreeragandcleancompressoroilandinserttheragintothebearingretainercavity.
Inspecttheshaftsurfacefornicksandburrs.Iffound,removethemwithafinefileorstone.Removeanysharpedgesfromtapersorchamfersontheshaft.(Figure3)
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Ontheshaftarea,wherethesealistobelocated,polishtheshaftusinganumber100gritsiliconcarbideemerycloth(P/N204-2385).Wrapastripofemeryclotharoundtheshaft.Grasptheemeryclothandusearotarymotiontopolishtheshaft.(Figure4)
Carefullyremovetheoildampenedragfromthebearingcavitywithawipingmotion.
Dampenalintfreeragwithanon-hydrocarbonsolvent(suggestacetone,nailpolishremover,orequivalent)andcarefullyremoveanyremainingdirtfromtheshaft.Makecertaintheshaftisoilanddirtfree.(Figure5)
WARNINGSOLVENTSSUCHASACETONEMAYBETOXICWHENINHALED.ALWAYSUSEINAWELL-VENTILATEDAREA.
Carefullyremovethenewsealfromthewrapping,checkforanydamage,andwipeclean.
CAUTIONCHECKTHATTHESEALFACEISLOCATEDINTHERETAINERWITHTHELAPPEDFACEOUTWARDS,ANDTAKECARETHATTHEFACEDOESNOTDROPOUTOFTHERETAINERWHENHANDLINGANDFITTINGTHESEAL.HANDLETHESEALASSEMBLYWITHGREATCARE.DONOTTOUCHTHESEALINSERTORCARBONRINGPOLISHEDFACES.
Lubricatethesteelfaceinsertsealring(o-ring)andsealretainercounterborewithP-80RubberLubricantEmulsion(P/N204-2386).(Figure6)
Protectthepolishedsideofthesealinsertusingthepasteboardsealprotectorfurnishedwiththesealassemblyandpushtheinsertintothesealretaineruntilitbottomsinthecounterbore.
CAUTIONDONOTTOUCHTHEPOLISHEDFACEOFTHESEALINSERTWITHFINGERS,RAGS,ETC.ApplyafilmofP-80onthegasendshaftandontheinsidediameteroftheflexiblesectionofthesealassembly.
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CAUTIONTOMAKECERTAINTHATTHEFLEXIBLESECTIONOFTHESEALADHERESTOTHESHAFTINTHECORRECTLOCATION,ITISNECESSARYTOCOMPLETETHEASSEMBLYONCESTARTED.Lubricatethecarbonringsectionofthesealassemblywithcleancompressoroil.
CAUTIONDONOTUSEOTHERTYPESOFOILORGREASE.
Makecertainallpartsandsupplies(gasket,sealer,etc.)areavailablebeforebeginningfinalassembly.
Withouttouchingthepolishedareaofthecarbonsealringinstallthesealassembly(spring,etc.)ontheshaft.(Figure8)
Applysealer(orinstallgasketonthesealretainer)asdescribedintheinstructionmanualfortheunitbeingserviced.
Immediatelyinstallthesealretainerandattachingcapscrewstothebearingretainermatingsurface.Tightenallcapscrewssecurely.(Figure9)
Afterinstallationiscompletedallowthesealtositwithoutrotatingtheshaftforapproximately30minutes.
Completereassemblyofdrivecoupling,guard,etc.followinginstructionsprovidedinthemanualfortheunitbeingserviced.
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ServiceProcedureComponents
Figure21-CompressorInputShaftSealFigure22-MinimumPressureCheckValve(Small)
MinimumPressure/CheckValveService
Theminimumpressurevalvemaybepurchasedasanassemblyifrequired.Servicepartsareavailable,however,torepair/overhaulthisvalve.Thisvalvemaybeservicedasfollows:1.Makecertaintheunitcannotbestartedandthatallthepressurehasbeenremovedfromthesystem.2.Removetheservicepipingfromtheminimumpressurevalve.3.Removethevalvefromthereceiver-oilreservoircap.4.Securelyclampthevalveinaverticalposition(capendup)inasuitablefixture(benchvise).5.Withasuitablewrenchremovethevalvecapfromthevalvebody.
Thespringbeneaththecapisunderpressure;exerciseextremecarewhenremovingthecap
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ServiceProcedure-Components
6.Removethespringfromthebody.Savespringshim(s)(washers)(ifany)forreuse.7.Insertasuitabletool(woodstick)intotheinletportofthevalveandpushthepistonandthevalveassemblyupwardandoutofthebody.8.Removethecheckvalvepistonfrominsidethelargerpiston.Takecarenottolosethesmallspring.9.Removetheo-ringfromthelargepistonanddiscardtheo-ring.10.Thoroughlycleanalltheremainingparts.Visuallyinspectallpartsfordamageorwear.Replaceasrequired.11.Installanewo-ringonthelargepiston.12.Reassemblethesmallcheckvalvepiston,withthespring,inthelargepiston.13.Lubricatetheo-ringonthepistonwithasiliconebaselubricant.(Example:DowCorning55M).14.Reinstallthecheckvalveandpistonassemblyinthevalvebody.Takecarenottodamagetheo-ringduringinstallation.15.Installthelargespringinthevalvebodyontopofthepiston.Reinstallspringshim(s).16.LightlycoatthecapthreadswithLoctite271andinstallthecap(compressspring)bythreadingthecapintothevalvebody.Torquethecapto60-70ftlbs.17.Reinstalltheminimumpressurevalveonthereceiver-oilreservoircover.Useagoodgradeofpipethreadsealeronallpipethreads.Tightensecurely.Donotovertighten.18.Reconnecttheservicepipingtothevalveusingpipethreadsealeronthepipethreads.Tightenservicepipingsecurely.Donotovertighten.
Figure23-MinimumPressure/CheckValve(Large)
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ServiceProcedure-Components(Continued)
ChangingMinimumPressureValveSpring
Thissectioncontainstheinstructionstoreplaceahigh-pressurespringinaminimumpressurevalvewithalow-pressurespring.
Cover
HighPressureSpring
Body
PistonSpacerStack
LowPressureSpring
Figure24-MPVParts.Figure25SeatedPistonDepth.Approximately7/8inchfromthetopofthebody.Maybeinstalledbeforeorafterspacersshowninfigures26and27.
Figure26InstallationofFirstSpacer.Figure27Installationofremainingspacers.Marked1.InstallDownsidedownInstall1or2atatimetoinsuretheyslidein(chamferedtokeepsharpedgesfromI.D.smoothly.Tenspacersareusedfor40PSIofpiston)pressure.
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ServiceProcedure-Components(Continued)
ChangingMinimumPressureValve-Continued
Figure28TenSpacersInstalledinPiston.Figure29InstallationofSpringPartNo.24-810.Eitherendmaybeinstalleddown.
Figure30InstallationofCover.Keepcoverfairlylevelduringinstallation,tighteningboltoneithersidealittleatatimesocoverdoesnottilt.Boltsshouldbetightenedsecurely,butdonotneedtobetorquedaccurately(5080ft-lbisadequate).
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ServiceProcedure-Components(Continued)
OilSeparatorService
Anoilseparatormayberemovedasfollows:1.Makecertaintheunitcannotbestartedandthatallpressurehasbeenremovedfromthesystem.2.Disconnectthepipingfromtheminimumpressurevalve.3.Disconnecttheseparatordrainlineandremovethedraintubefromtheseparator.Markthepositionofthereceiver-reservoircovertoaidincorrectassembly.4.Removetheseparatorcovertoreceiver-reservoirattachingcapscrews(nuts)andremovethecover.5.Removetheseparatorelementbyliftingitoutofthereservoir.6.Cleanthecoverandreservoircovermountingflange.Makecertainalltracesofgasketmaterialareremoved.
Ifthegasketsdonothavegroundingstaples,installtwolargecoppercladstaplesineachgasket.
7.Inspectthenewelementgasketstomakecertaintheelectricalgroundingstaplesareinstalled.8.Reinstalltheseparatorelementinthereceiver-reservoir.9.Reinstallthereservoircover,correctlypositioned,withattachingcapscrews(nuts)andtightensecurely.10.Reinstalltheseparatordraintubeandfitting.
Thedraintubemustextendintotheseparatorelementfarenoughtotouchthebottomoftheelement.Ifthetubeisnotlongenoughtotouchbottom,obtain/makeanewtube.
11.Reconnecttheseparatordrainline.
MAKECERTAINTHEDRAINLINEFILTERANDCHECKVALVEARECORRECTLYINSTALLED
12.Reconnecttheservicepipingtotheminimumpressurevalve.Useaqualitypipethreadsealeronallpipethreads.Tightensecurely.Donotovertighten.
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RebuildKitsPleaserefertotheengineeringprintbelowtoorderarebuildkitforyourunit.(ChecktheWebsiteforlatestrevision.)
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Website
LeROI-RCThasawebsitethatcontainsusefultips,features,sizinginformation,andtechnicaldata.Weencourageusingandexploringthewebsitetolearnwhattoolsareavailabletoyou.Visitusatwww.leroigas.com
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CompressorSales/Pricing/Applications/Specifications/CompressorSizingMaroJohnson
Phone:281-693-1950
Fax:281-693-1952
Cell:713-586-9005
Email:[email protected]@leroigas.com
CompressorOrders&Shipping/PartsOrders&Shipping/WarrantyTinaEdwards
Phone:937-498-2550
Fax:937-492-3424
Email:[email protected]
Note:Allwarrantyclaimsnowsubmittedviatheweb.Visitwww.leroigas.com.
AccountingAmandaYoung
Phone:937-498-2638
Fax:937-492-3424
Email:[email protected]
Engineering/TechnicalSupport/WebsiteRonKeen
Phone:937-498-2558
Fax:937-492-3424
Email:[email protected]
ContactList
Belowisalistofcontactsincaseyouneedanyassistance.Inordertoprovideyouwiththelatestinformationthislistisalsoavailableonthewebsite:www.leroigas.com
USA32
CompressorSales/Pricing/Applications/Specifications/CompressorSizing
Phone:403-808-8377
Fax:403-945-1910
Email:[email protected]
CANADA33
MALFUNCTIONPROBABLECAUSEREMEDY
HighDischargeTemperature1.Insufficientorincorrectoil.2.Operatingaboveratedpressureoratexcessiveratio.3.Excessiveinlettemperature.4.Restrictedoilcooler(insideoroutside).5.Damagedorinoperativethermalby-passvalve.6.Restrictedcoolingoilflow.1.Fill,ordrainandre-filloilreservoirtocorrectlevelwithcorrectoil.2.Operateatcorrectpressures.3.Lowerinlettemperature.4.Clean(insideandoutside)orreplacewithnewcooler.5.Servicethermalby-passvalve.6.a.Serviceoilfilter.b.Checkoillinesandhosesforrestrictions.Serviceasrequired.
LowInletPressure1.Improperlysetinletvalveorothercontrol.2.Restrictedinlet(dirtyorcloggedfilters,screens,etc).3.Damagedorfaultyinletpressureregulator.1.Setoradjustcontrolcorrectly.2.Serviceinletfiltersorscreens.3.Serviceinletpressureregulator.
HighInletPressure1.Improperlysetinletvalveorothercontrol.1.Setoradjustcontrolcorrectly.
HighDischargePressure1.Operatingathigherthanratedpressure.2.Damagedorworndischargecheckvalve.3.Incorrectminimumpressurevalveinstalled.4.Damagedorwornminimumpressurevalve.5.Excessiverestrictioninseparatororoutletpiping.1.Adjusttooperateatratedpressure.2.Servicedischargecheckvalve.3.Installcorrectminimumpressurevalve.4.Serviceminimumpressurevalve.5.Correctcauseofexcessiverestriction.
ExcessiveOilConsumption1.Incorrectoilinstalledinreservoir.2.Reservoirover-filled.3.Externaloilleaks.4.Operatingwithdischargepressuretoolow.5.Draintubemissing,brokenornottouchingbottomofseparatorelement.6.Worn,damaged,orrestrictedseparatorelement.7.Cloggedorrestrictedseparatordrainlinedraintubeorfilter.1.Drainunitandinstallcorrectoil.2.Draintocorrectlevel.3.Checkforandcorrectallleaks.4.Operateatratedpressure.5.Replacedraintubewithcorrectlengthtube.6.Serviceseparatorelement.7.a.Servicedrainlinefilter.b.Checkconditionandinstallationofdrainlinecheckvalve.Cleanorinstallcorrectly.Replaceifworn.Servicedrainlineasrequired.
ServiceDiagnosis
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ROTARYCOMPRESSIONTECHNOLOGIES,INCd.b.a.LEROIGASCOMPRESSORSWARRANTYFORROTARYSCREWGASENDSUSEDINNON-CONSUMERAPPLICATIONSO.E.M.&GAS
Manufactured
LeROI-RCTwarrantsitsrotaryscrewcompressorproductsandpartstobeincompliancewiththeirrespectivespecificationsandfreefromdefectsinmaterialsandworkmanshipduringawarrantyperiodendingtheearlierof(i)12monthsaftertheproductstartupdate,or(ii)18monthsaftertheoriginaldateofshipmentoftheproductbyLeROI-RCT.
RemanufacturedLeROI-RCTwarrantsitsremanufacturedrotaryscrewcompressorproductsandpartstobeincompliancewiththeirrespectivespecificationsandfreefromdefectsinmaterialsandworkmanshipduringawarrantyperiodendingtheearlierof(i)90daysaftertheproductstartupdate,or(ii)9monthsaftertheoriginaldateofshipmentoftheproductbyLeROI-RCT.
LeROI-RCT'sonlyobligationunderthiswarrantywillbe,atitselection,torepairorreplaceanypartdeterminedtobenon-conformingordefectiveduringtheapplicablewarrantyperiod,includinggroundfreight(DomesticUSAonlyforoverseaswarranty)forthegasend.Labortochangeoutthegasendisnotcovered.THISWARRANTYDOESNOTCOVERCORROSION.
THEOWNER/USERASSUMESALLOTHERRISKS,IFANY,SUCHASTHERISKOFANYDIRECT,INDIRECT,INCIDENTALORCONSEQUENTIALLOSSORDAMAGESARISINGOUTOFTHEUSEOF,ORINABILITYTOUSE,THECOMPRESSORORANYPART.
THISWARRANTYISMADEINLIEUOFTHEWARRANTIESOFMERCHANTABILITY,FITNESSFORPARTICULARPURPOSE,ANDALLOTHERWARRANTIES,EXPRESSORIMPLIED,ANDMAYNOTBEVARIEDOREXTENDEDEXCEPTINWRITINGBYANAUTHORIZEDOFFICIALOFLeROI-RCT.
RotaryCompressionTechnologies211EastRussellRoadSidney,Ohio45373Phone:937-498-2555Fax:[email protected]/2/05-Revised8-10-07
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THISPAGEINTENTIONALLYBLANK
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ItPaystoUseGenuineLeROIParts
ProvidedbyRotaryCompressionTechnologies,Inc
RotaryCompressionTechnologies211EastRussellRoadSidney,Ohio45365Phone:937-498-2555Fax:[email protected]
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