peakcorrectly

!
ParkerSafetyGuideforSelectingandUsingHose,Tubing,FittingsandRelatedAccessoriesParkerPublicationNo.
4400-B.
1Revised:November,2007WARNING:Failureorimproperselectionorimproperuseofhose,tubing,fittings,assembliesorrelatedaccessories("Products")cancausedeath,personalinjuryandpropertydamage.
PossibleconsequencesoffailureorimproperselectionorimproperuseoftheseProductsincludebutarenotlimitedto:Fittingsthrownoffathighspeed.
Highvelocityfluiddischarge.
Explosionorburningoftheconveyedfluid.
Electrocutionfromhighvoltageelectricpowerlines.
Contactwithsuddenlymovingorfallingobjectsthatarecontrolledbytheconveyedfluid.
Injectionsbyhigh-pressurefluiddischarge.
DangerouslywhippingHose.
Contactwithconveyedfluidsthatmaybehot,cold,toxicorotherwiseinjurious.
Sparkingorexplosioncausedbystaticelectricitybuilduporothersourcesofelectricity.
Sparkingorexplosionwhilesprayingpaintorflammableliquids.
Injuriesresultingfrominhalation,ingestionorexposuretofluids.
BeforeselectingorusinganyoftheseProducts,itisimportantthatyoureadandfollowtheinstructionsbelow.
OnlyHosefromParker'sStratoflexProductsDivisionisapprovedforin-flightaerospaceapplications.
1.
0GENERALINSTRUCTIONS1.
1Scope:Thissafetyguideprovidesinstructionsforselectingandusing(includingassembling,installing,andmaintaining)theseProducts.
Forconvenience,allrubberand/orthermoplasticproductscommonlycalled"hose"or"tubing"arecalled"Hose"inthissafetyguide.
AllassembliesmadewithHosearecalled"HoseAssemblies".
Allproductscommonlycalled"fittings","couplings"or"adapters"arecalled"Fittings".
Allrelatedaccessories(includingcrimpingandswagingmachinesandtooling)arecalled"RelatedAccessories".
ThissafetyguideisasupplementtoandistobeusedwiththespecificParkerpublicationsforthespecificHose,FittingsandRelatedAccessoriesthatarebeingconsideredforuse.
Parkerpublicationsareavailableatwww.
parker.
com.
SAEJ1273(www.
sae.
org)andISO17165-2(www.
ansi.
org)alsoproviderecommendedpracticesforhydraulicHoseAssemblies.
1.
2Fail-Safe:Hose,HoseAssembliesandFittingscananddofailwithoutwarningformanyreasons.
Designallsystemsandequipmentinafail-safemode,sothatfailureoftheHose,HoseAssemblyorFittingwillnotendangerpersonsorproperty.
1.
3Distribution:ProvideacopyofthissafetyguidetoeachpersonresponsibleforselectingorusingHoseandFittingproducts.
DonotselectoruseParkerHoseorFittingswithoutthoroughlyreadingandunderstandingthissafetyguideaswellasthespecificParkerpublicationsfortheProducts.
1.
4UserResponsibility:DuetothewidevarietyofoperatingconditionsandapplicationsforHoseandFittings,ParkerdoesnotrepresentorwarrantthatanyparticularHoseorFittingissuitableforanyspecificendusesystem.
Thissafetyguidedoesnotanalyzealltechnicalparametersthatmustbeconsideredinselectingaproduct.
Theuser,throughitsownanalysisandtesting,issolelyresponsiblefor:MakingthefinalselectionoftheProducts.
Assuringthattheuser'srequirementsaremetandthattheapplicationpresentsnohealthorsafetyhazards.
ProvidingallappropriatehealthandsafetywarningsontheequipmentonwhichtheProductsareused.
Assuringcompliancewithallapplicablegovernmentandindustrystandards.
1.
5AdditionalQuestions:CalltheappropriateParkertechnicalservicedepartmentifyouhaveanyquestionsorrequireanyadditionalinformation.
SeetheParkerpublicationfortheProductsbeingconsideredorused,orcall1-800-CPARKER,orgotowww.
parker.
com,fortelephonenumbersoftheappropriatetechnicalservicedepartment.
2.
0HOSEANDFITTINGSSELECTIONINSTRUCTIONS2.
1ElectricalConductivity:CertainapplicationsrequirethattheHosebenonconductivetopreventelectricalcurrentflow.
OtherapplicationsrequiretheHoseandtheFittingsandtheHose/Fittinginterfacetobesufficientlyconductivetodrainoffstaticelectricity.
ExtremecaremustbeexercisedwhenselectingHoseandFittingsfortheseoranyotherapplicationsinwhichelectricalconductivityornonconductivityisafactor.
TheelectricalconductivityornonconductivityofHoseandFittingsisdependentuponmanyfactorsandmaybesusceptibletochange.
ThesefactorsincludebutarenotlimitedtothevariousmaterialsusedtomaketheHoseandtheFittings,Fittingfinish(someFittingfinishesareelectricallyconductivewhileothersarenonconductive),manufacturingmethods(includingmoisturecontrol),howtheFittingscontacttheHose,ageandamountofdeteriorationordamageorotherchanges,moisturecontentoftheHoseatanyparticulartime,andotherfactors.
ThefollowingareconsiderationsforelectricallynonconductiveandconductiveHose.
Forotherapplicationsconsulttheindividualcatalogpagesandtheappropriateindustryorregulatorystandardsforproperselection.
2.
1.
1ElectricallyNonconductiveHose:CertainapplicationsrequirethattheHosebenonconductivetopreventelectricalcurrentflowortomaintainelectricalisolation.
ForapplicationsthatrequireHosetobeelectricallynonconductive,includingbutnotlimitedtoapplicationsnearhighvoltageelectriclines,onlyspecialnonconductiveHosecanbeused.
ThemanufactureroftheequipmentinwhichthenonconductiveHoseistobeusedmustbeconsultedtobecertainthattheHoseandFittingsthatareselectedareproperfortheapplication.
DonotuseanyParkerHoseorFittingsforanysuchapplicationrequiringnonconductiveHose,includingbutnotlimitedtoapplicationsnearhighvoltageelectriclines,unless(i)theapplicationisexpresslyapprovedintheParkertechnicalpublicationfortheproduct,(ii)theHoseismarked"nonconductive",and(iii)themanufactureroftheequipmentonwhichtheHoseistobeusedspecificallyapprovestheparticularParkerHoseandFittingsforsuchuse.
2.
1.
2ElectricallyConductiveHose:ParkermanufacturesspecialHoseforcertainapplicationsthatrequireelectricallyconductiveHose.
ParkermanufacturesspecialHoseforconveyingpaintinairlesspaintsprayingapplications.
ThisHoseislabeled"ElectricallyConductiveAirlessPaintSprayHose"onitslaylineandpackaging.
ThisHosemustbeproperlyconnectedtotheappropriateParkerFittingsandproperlygroundedinordertodissipatedangerousstaticchargebuildup,whichoccursinallairlesspaintsprayingapplications.
DonotuseanyotherHoseforairlesspaintspraying,evenifelectricallyconductive.
UseofanyotherHoseorfailuretoproperlyconnecttheHosecancauseafireoranexplosionresultingindeath,personalinjury,andpropertydamage.
ParkermanufacturesaspecialHoseforcertaincompressednaturalgas("CNG")applicationswherestaticelectricitybuildupmayoccur.
ParkerCNGHoseassembliescomplywiththerequirementsofANSI/IASNGV4.
2-1999;CSA12.
52-M99,"HosesforNaturalGasVehiclesandDispensingSystems"(www.
ansi.
org).
ThisHoseislabeled"ElectricallyConductiveforCNGUse"onitslaylineandpackaging.
ThisHosemustbeproperlyconnectedtotheappropriateParkerFittingsandproperlygroundedinordertodissipatedangerousstaticchargebuildup,whichoccursin,forexample,highvelocityCNGdispensingortransfer.
DonotuseanyotherHoseforCNGapplicationswherestaticchargebuildupmayoccur,evenifelectricallyconductive.
UseofotherHosesinCNGapplicationsorfailuretoproperlyconnectorgroundthisHosecancauseafireoranexplosionresultingindeath,personalinjury,andpropertydamage.
CaremustalsobetakentoprotectagainstCNGpermeationthroughtheHosewall.
Seesection2.
6,Permeation,formoreinformation.
ParkerCNGHoseisintendedfordispenserandvehicleuseatamaximumtemperatureof180°F(82°C).
ParkerCNGHoseshouldnotbeusedinconfinedspacesorunventilatedareasorareasexceeding180°F(82°C).
Finalassembliesmustbetestedforleaks.
CNGHoseAssembliesshouldbetestedonamonthlybasisforconductivityperANSI/IASNGV4.
2-1999;CSA12.
52-M99.
ParkermanufacturesspecialHoseforaerospacein-flightapplications.
Aerospacein-flightapplicationsemployingHosetotransmitfuel,lubricatingfluidsandhydraulicfluidsrequireaspecialHosewithaconductiveinnertube.
ThisHoseforin-flightapplicationsisavailableonlyfromParker'sStratoflexProductsDivision.
DonotuseanyotherParkerHoseforin-flightapplications,evenifelectricallyconductive.
UseofotherHosesforin-flightapplicationsorfailuretoproperlyconnectorgroundthisHosecancauseafireoranexplosionresultingindeath,personalinjuryandpropertydamage.
TheseHoseassembliesforin-flightapplicationsmustmeetallapplicableaerospaceindustry,aircraftengineandaircraftrequirements.
2.
2Pressure:HoseselectionmustbemadesothatthepublishedmaximumworkingpressureoftheHoseandFittingsareequaltoorgreaterthanthemaximumsystempressure.
ThemaximumworkingpressureofaHoseAssemblyistheloweroftherespectivepublishedmaximumworkingpressuresoftheHoseandtheFittingsused.
SurgepressuresorpeaktransientpressuresinthesystemmustbebelowthepublishedmaximumworkingpressurefortheHose.
Surgepressuresandpeakpressurescanusuallyonlybedeterminedbysensitiveelectricalinstrumentationthatmeasuresandindicatespressuresatmillisecondintervals.
Mechanicalpressuregaugesindicateonlyaveragepressuresandcannotbeusedtodeterminesurgepressuresorpeaktransientpressures.
PublishedburstpressureratingsforHoseisformanufacturingtestpurposesonlyandisnoindicationthattheProductcanbeusedinapplicationsattheburstpressureorotherwiseabovethepublishedmaximumrecommendedworkingpressure.
2.
3Suction:HosesusedforsuctionapplicationsmustbeselectedtoinsurethattheHosewillwithstandthevacuumandpressureofthesystem.
ImproperlyselectedHosemaycollapseinsuctionapplication.
2.
4Temperature:Becertainthatfluidandambienttemperatures,bothsteadyandtransient,donotexceedthelimitationsoftheHose.
TemperaturesbelowandabovetherecommendedlimitcandegradeHosetoapointwhereafailuremayoccurandreleasefluid.
ProperlyinsulateandprotecttheHoseAssemblywhenroutingnearhotobjects(e.
g.
manifolds).
DonotuseanyHoseinanyapplicationwherefailureoftheHosecouldresultintheconveyedfluids(orvaporsormistfromtheconveyedfluids)contactinganyopenflame,moltenmetal,orotherpotentialfireignitionsourcethatcouldcauseburningorexplosionoftheconveyedfluidsorvapors.
2.
5FluidCompatibility:HoseAssemblyselectionmustassurecompatibilityoftheHosetube,cover,reinforcement,andFittingswiththefluidmediaused.
SeethefluidcompatibilitychartintheParkerpublicationfortheproductbeingconsideredorused.
Thisinformationisofferedonlyasaguide.
Actualservicelifecanonlybedeterminedbytheenduserbytestingunderallextremeconditionsandotheranalysis.
HosethatischemicallycompatiblewithaparticularfluidmustbeassembledusingFittingsandadapterscontaininglikewisecompatibleseals.
2.
6Permeation:Permeation(thatis,seepagethroughtheHose)willoccurfrominsidetheHosetooutsidewhenHoseisusedwithgases,liquidandgasfuels,andrefrigerants(includingbutnotlimitedtosuchmaterialsashelium,dieselfuel,gasoline,naturalgas,orLPG).
Thispermeationmayresultinhighconcentrationsofvaporswhicharepotentiallyflammable,explosive,ortoxic,andinlossoffluid.
Dangerousexplosions,fires,andotherhazardscanresultwhenusingthewrongHoseforsuchapplications.
ThesystemdesignermusttakeintoaccountthefactthatthispermeationwilltakeplaceandmustnotuseHoseifthispermeationcouldbehazardous.
Thesystemdesignermusttakeintoaccountalllegal,government,insurance,oranyotherspecialregulationswhichgoverntheuseoffuelsandrefrigerants.
NeveruseaHoseeventhoughthefluidcompatibilityisacceptablewithoutconsideringthepotentialhazardouseffectsthatcanresultfrompermeationthroughtheHoseAssembly.
PermeationofmoisturefromoutsidetheHosetoinsidetheHosewillalsooccurinHoseassemblies,regardlessofinternalpressure.
Ifthismoisturepermeationwouldhavedetrimentaleffects(particularly,butnotlimitedtorefrigerationandairconditioningsystems),incorporationofsufficientdryingcapacityinthesystemorotherappropriatesystemsafeguardsshouldbeselectedandused.
2.
7Size:Transmissionofpowerbymeansofpressurizedfluidvarieswithpressureandrateofflow.
Thesizeofthecomponentsmustbeadequatetokeeppressurelossestoaminimumandavoiddamageduetoheatgenerationorexcessivefluidvelocity.
2.
8Routing:Attentionmustbegiventooptimumroutingtominimizeinherentproblems(kinkingorflowrestrictionduetoHosecollapse,twistingoftheHose,proximitytohotobjectsorheatsources).
ForadditionalroutingrecommendationsseeSAEJ1273andISO17165-2.
HoseAssemblieshaveafinitelifeandifpossible,shouldbeinstalledinamannerthatallowsforeaseofinspectionandfuturereplacement.
RubberHosebecauseofitsrelativeshortlife,shouldnotbeusedinresidentialandcommercialbuildingsforHVAC(heating,ventilatingandairconditioning)applications.
2.
9Environment:CaremustbetakentoinsurethattheHoseandFittingsareeithercompatiblewithorprotectedfromtheenvironment(thatis,surroundingconditions)towhichtheyareexposed.
Environmentalconditionsincludingbutnotlimitedtoultravioletradiation,sunlight,heat,ozone,moisture,water,saltwater,chemicalsandairpollutantscancausedegradationandprematurefailure.
2.
10MechanicalLoads:ExternalforcescansignificantlyreduceHoselifeorcausefailure.
Mechanicalloadswhichmustbeconsideredincludeexcessiveflexing,twist,kinking,tensileorsideloads,bendradius,andvibration.
UseofswiveltypeFittingsoradaptersmayberequiredtoinsurenotwistisputintotheHose.
UnusualapplicationsmayrequirespecialtestingpriortoHoseselection.
2.
11PhysicalDamage:CaremustbetakentoprotectHosefromwear,snagging,kinking,bendingsmallerthatminimumbendradiusandcutting,anyofwhichcancauseprematureHosefailure.
AnyHosethathasbeenkinkedorbenttoaradiussmallerthantheminimumbendradius,andanyHosethathasbeencutoriscrackedorisotherwisedamagedshouldberemovedanddiscarded.
2.
12ProperEndFitting:Seeinstructions3.
2through3.
5.
TheserecommendationsmaybesubstantiatedbytestingtoindustrystandardssuchasSAEJ517forhydraulicapplications,orMIL-A-5070,AS1339,orAS3517forHosesfromParker'sStratoflexProductsDivisionforaerospaceapplications.
2.
13Length:WhenestablishingaproperHoselength,motionabsorption,Hoselengthchangesduetopressure,andHoseandmachinetolerancesandmovementmustbeconsidered.
2.
14SpecificationsandStandards:WhenselectingHoseandFittings,government,industry,andParkerspecificationsandrecommendationsmustbereviewedandfollowedasapplicable.
2.
15HoseCleanliness:Hosecomponentsmayvaryincleanlinesslevels.
CaremustbetakentoinsurethattheHoseAssemblyselectedhasanadequatelevelofcleanlinessfortheapplication.
2.
16FireResistantFluids:SomefireresistantfluidsthataretobeconveyedbyHoserequireuseofthesametypeofHoseasusedwithpetroleumbasefluids.
SomesuchfluidsrequireaspecialHose,whileafewfluidswillnotworkwithanyHoseatall.
Seeinstructions2.
5and1.
5.
ThewrongHosemayfailafteraveryshortservice.
Inaddition,allliquidsbutpurewatermayburnfiercelyundercertainconditions,andevenpurewaterleakagemaybehazardous.
2.
17RadiantHeat:Hosecanbeheatedtodestructionwithoutcontactbysuchnearbyitemsashotmanifoldsormoltenmetal.
Thesameheatsourcemaytheninitiateafire.
ThiscanoccurdespitethepresenceofcoolairaroundtheHose.
2.
18WeldingorBrazing:Whenusingatorchorarcwelderincloseproximitytohydrauliclines,thehydrauliclinesshouldberemovedorshieldedwithappropriatefireresistantmaterials.
FlameorweldspattercouldburnthroughtheHoseandpossiblyigniteescapingfluidresultinginacatastrophicfailure.
Heatingofplatedparts,includingHoseFittingsandadapters,above450°F(232°C)suchasduringwelding,brazingorsolderingmayemitdeadlygases.
2.
19AtomicRadiation:AtomicradiationaffectsallmaterialsusedinHoseassemblies.
Sincethelong-termeffectsmaybeunknown,donotexposeHoseassembliestoatomicradiation.
2.
20AerospaceApplications:TheonlyHoseandFittingsthatmaybeusedforin-flightaerospaceapplicationsarethoseavailablefromParker'sStratoflexProductsDivision.
DonotuseanyotherHoseorFittingsforin-flightapplications.
DonotuseanyHoseorFittingsfromParker'sStratoflexProductsDivisionwithanyotherHoseorFittings,unlessexpresslyapprovedinwritingbytheengineeringmanagerorchiefengineerofStratoflexProductsDivisionandverifiedbytheuser'sowntestingandinspectiontoaerospaceindustrystandards.
2.
21UnlockingCouplings:BalllockingcouplingsorotherFittingswithquickdisconnectabilitycanunintentionallydisconnectiftheyaredraggedoverobstructions,orifthesleeveorotherdisconnectmember,isbumpedormovedenoughtocausedisconnect.
ThreadedFittingsshouldbeconsideredwherethereisapotentialforaccidentaluncoupling.
3.
0HOSEANDFITTINGSASSEMBLYANDINSTALLATIONINSTRUCTIONS3.
1ComponentInspection:Priortoassembly,acarefulexaminationoftheHoseandFittingsmustbeperformed.
Allcomponentsmustbecheckedforcorrectstyle,size,catalognumber,andlength.
TheHosemustbeexaminedforcleanliness,obstructions,blisters,coverlooseness,kinks,cracks,cutsoranyothervisibledefects.
InspecttheFittingandsealingsurfacesforburrs,nicks,corrosionorotherimperfections.
DoNOTuseanycomponentthatdisplaysanysignsofnonconformance.
3.
2HoseandFittingAssembly:DonotassembleaParkerFittingonaParkerHosethatisnotspecificallylistedbyParkerforthatFitting,unlessauthorizedinwritingbytheengineeringmanagerorchiefengineeroftheappropriateParkerdivision.
DonotassembleaParkerFittingonanothermanufacturer'sHoseoraParkerHoseonanothermanufacturer'sFittingunless(i)theengineeringmanagerorchiefengineeroftheappropriateParkerdivisionapprovestheAssemblyinwritingorthatcombinationisexpresslyapprovedintheappropriateParkerliteratureforthespecificParkerproduct,and(ii)theuserverifiestheAssemblyandtheapplicationthroughanalysisandtesting.
ForParkerHosethatdoesnotspecifyaParkerFitting,theuserissolelyresponsiblefortheselectionoftheproperFittingandHoseAssemblyprocedures.
Seeinstruction1.
4.
TopreventthepossibilityofproblemssuchasleakageattheFittingorsystemcontamination,itisimportanttocompletelyremovealldebrisfromthecuttingoperationbeforeinstallationoftheFittings.
TheParkerpublishedinstructionsmustbefollowedforassemblingtheFittingsontheHose.
TheseinstructionsareprovidedintheParkerFittingcatalogforthespecificParkerFittingbeingused,orbycalling1-800-CPARKER,oratwww.
parker.
com.
3.
3RelatedAccessories:DonotcrimporswageanyParkerHoseorFittingwithanythingbutthelistedswageorcrimpmachineanddiesinaccordancewithParkerpublishedinstructions.
Donotcrimporswageanothermanufacturer'sFittingwithaParkercrimporswagedieunlessauthorizedinwritingbytheengineeringmanagerorchiefengineeroftheappropriateParkerdivision.
3.
4Parts:DonotuseanyParkerFittingpart(includingbutnotlimitedtosocket,shell,nipple,orinsert)exceptwiththecorrectParkermatingparts,inaccordancewithParkerpublishedinstructions,unlessauthorizedinwritingbytheengineeringmanagerorchiefengineeroftheappropriateParkerdivision.
3.
5FieldAttachable/Permanent:DonotreuseanyfieldattachableHoseFittingthathasblownorpulledoffaHose.
DonotreuseaParkerpermanentHoseFitting(crimpedorswaged)oranypartthereof.
CompleteHoseAssembliesmayonlybereusedafterproperinspectionundersection4.
0.
DonotassembleFittingstoanypreviouslyusedhydraulicHosethatwasinservice,foruseinafluidpowerapplication.
3.
6Pre-InstallationInspection:Priortoinstallation,acarefulexaminationoftheHoseAssemblymustbeperformed.
InspecttheHoseAssemblyforanydamageordefects.
DONOTuseanyHoseAssemblythatdisplaysanysignsofnonconformance.
3.
7MinimumBendRadius:InstallationofaHoseatlessthantheminimumlistedbendradiusmaysignificantlyreducetheHoselife.
ParticularattentionmustbegiventoprecludesharpbendingattheHosetoFittingjuncture.
Anybendingduringinstallationatlessthantheminimumbendradiusmustbeavoided.
IfanyHoseiskinkedduringinstallation,theHosemustbediscarded.
3.
8TwistAngleandOrientation:HoseAssemblyinstallationmustbesuchthatrelativemotionofmachinecomponentsdoesnotproducetwisting.
3.
9Securement:Inmanyapplications,itmaybenecessarytorestrain,protect,orguidetheHosetoprotectitfromdamagebyunnecessaryflexing,pressuresurges,andcontactwithothermechanicalcomponents.
Caremustbetakentoinsuresuchrestraintsdonotintroduceadditionalstressorwearpoints.
3.
10ProperConnectionofPorts:ProperphysicalinstallationoftheHoseAssemblyrequiresacorrectlyinstalledportconnectioninsuringthatnotwistortorqueistransferredtotheHosewhentheFittingsarebeingtightenedorotherwiseduringuse.
3.
11ExternalDamage:Properinstallationisnotcompletewithoutinsuringthattensileloads,sideloads,kinking,flattening,potentialabrasion,threaddamageordamagetosealingsurfacesarecorrectedoreliminated.
Seeinstruction2.
10.
3.
12SystemCheckout:Allairentrapmentmustbeeliminatedandthesystempressurizedtothemaximumsystempressure(atorbelowtheHosemaximumworkingpressure)andcheckedforproperfunctionandfreedomfromleaks.
Personnelmuststayoutofpotentialhazardousareaswhiletestingandusing.
3.
13Routing:TheHoseAssemblyshouldberoutedinsuchamannersoifafailuredoesoccur,theescapingmediawillnotcausepersonalinjuryorpropertydamage.
Inaddition,iffluidmediacomesincontactwithhotsurfaces,openflameorsparks,afireorexplosionmayoccur.
Seesection2.
4.
3.
14GroundFaultEquipmentProtectionDevices(GFEPDs):WARNING!
FireandShockHazard.
TominimizethedangeroffireiftheheatingcableofaMultitubebundleisdamagedorimproperlyinstalled,useaGroundFaultEquipmentProtectionDevice.
Electricalfaultcurrentsmaybeinsufficienttotripaconventionalcircuitbreaker.
Forgroundfaultprotection,theIEEE515:1989(www.
ansi.
org)standardforheatingcablesrecommendstheuseofGFEPDswithanominal30milliamperetriplevelfor"pipingsystemsinclassifiedareas,thoseareasrequiringahighdegreeofmaintenance,orwhichmaybeexposedtophysicalabuseorcorrosiveatmospheres".
4.
0HOSEANDFITTINGMAINTENANCEANDREPLACEMENTINSTRUCTIONS4.
1Evenwithproperselectionandinstallation,Hoselifemaybesignificantlyreducedwithoutacontinuingmaintenanceprogram.
Theseverityoftheapplication,riskpotentialfromapossibleHosefailure,andexperiencewithanyHosefailuresintheapplicationorinsimilarapplicationsshoulddeterminethefrequencyoftheinspectionandthereplacementfortheProductssothatProductsarereplacedbeforeanyfailureoccurs.
Amaintenanceprogrammustbeestablishedandfollowedbytheuserand,atminimum,mustincludeinstructions4.
2through4.
7.
4.
2VisualInspectionHose/Fitting:AnyofthefollowingconditionsrequireimmediateshutdownandreplacementoftheHoseAssembly:FittingslippageonHose;Damaged,cracked,cutorabradedcover(anyreinforcementexposed);Hard,stiff,heatcracked,orcharredHose;Cracked,damaged,orbadlycorrodedFittings;LeaksatFittingorinHose;Kinked,crushed,flattenedortwistedHose;andBlistered,soft,degraded,orloosecover.
4.
3VisualInspectionAllOther:Thefollowingitemsmustbetightened,repaired,correctedorreplacedasrequired:Leakingportconditions;Excessdirtbuildup;Wornclamps,guardsorshields;andSystemfluidlevel,fluidtype,andanyairentrapment.
4.
4FunctionalTest:Operatethesystematmaximumoperatingpressureandcheckforpossiblemalfunctionsandleaks.
Personnelmustavoidpotentialhazardousareaswhiletestingandusingthesystem.
Seesection2.
2.
4.
5ReplacementIntervals:HoseassembliesandelastomericsealsusedonHoseFittingsandadapterswilleventuallyage,harden,wearanddeteriorateunderthermalcyclingandcompressionset.
HoseAssembliesandelastomericsealsshouldbeinspectedandreplacedatspecificreplacementintervals,basedonpreviousservicelife,governmentorindustryrecommendations,orwhenfailurescouldresultinunacceptabledowntime,damage,orinjuryrisk.
Seesection1.
2.
HoseandFittingsmaybesubjectedtointernalmechanicaland/orchemicalwearfromtheconveyingfluidandmayfailwithoutwarning.
Theusermustdeterminetheproductlifeundersuchcircumstancesbytesting.
Alsoseesection2.
5.
4.
6HoseInspectionandFailure:Hydraulicpowerisaccomplishedbyutilizinghighpressurefluidstotransferenergyanddowork.
Hoses,FittingsandHoseAssembliesallcontributetothisbytransmittingfluidsathighpressures.
Fluidsunderpressurecanbedangerousandpotentiallylethaland,therefore,extremecautionmustbeexercisedwhenworkingwithfluidsunderpressureandhandlingtheHosestransportingthefluids.
Fromtimetotime,HoseAssemblieswillfailiftheyarenotreplacedatpropertimeintervals.
Usuallythesefailuresaretheresultofsomeformofmisapplication,abuse,wearorfailuretoperformpropermaintenance.
WhenHosesfail,generallythehighpressurefluidsinsideescapeinastreamwhichmayormaynotbevisibletotheuser.
Undernocircumstancesshouldtheuserattempttolocatetheleakby"feeling"withtheirhandsoranyotherpartoftheirbody.
Highpressurefluidscanandwillpenetratetheskinandcauseseveretissuedamageandpossiblylossoflimb.
Evenseeminglyminorhydraulicfluidinjectioninjuriesmustbetreatedimmediatelybyaphysicianwithknowledgeofthetissuedamagingpropertiesofhydraulicfluid.
IfaHosefailureoccurs,immediatelyshutdowntheequipmentandleavetheareauntilpressurehasbeencompletelyreleasedfromtheHoseAssembly.
SimplyshuttingdownthehydraulicpumpmayormaynoteliminatethepressureintheHoseAssembly.
Manytimescheckvalves,etc.
,areemployedinasystemandcancausepressuretoremaininaHoseAssemblyevenwhenpumpsorequipmentarenotoperating.
TinyholesintheHose,commonlyknownaspinholes,canejectsmall,dangerouslypowerfulbuthardtoseestreamsofhydraulicfluid.
ItmaytakeseveralminutesorevenhoursforthepressuretoberelievedsothattheHoseAssemblymaybeexaminedsafely.
Oncethepressurehasbeenreducedtozero,theHoseAssemblymaybetakenofftheequipmentandexamined.
Itmustalwaysbereplacedifafailurehasoccurred.
NeverattempttopatchorrepairaHoseAssemblythathasfailed.
ConsultthenearestParkerdistributorortheappropriateParkerdivisionforHoseAssemblyreplacementinformation.
NevertouchorexamineafailedHoseAssemblyunlessitisobviousthattheHosenolongercontainsfluidunderpressure.
Thehighpressurefluidisextremelydangerousandcancauseseriousandpotentiallyfatalinjury.
4.
7Elastomericseals:Elastomericsealswilleventuallyage,harden,wearanddeteriorateunderthermalcyclingandcompressionset.
Elastomericsealsshouldbeinspectedandreplaced.
4.
8Refrigerantgases:Specialcareshouldbetakenwhenworkingwithrefrigerationsystems.
Suddenescapeofrefrigerantgasescancauseblindnessiftheescapinggasescontacttheeyeandcancausefreezingorothersevereinjuriesifitcontactsanyotherportionofthebody.
4.
9Compressednaturalgas(CNG):ParkerCNGHoseAssembliesshouldbetestedafterinstallationandbeforeuse,andatleastonamonthlybasisperANSI/IASNGV4.
2-1999;CSA12.
52-M99Section4.
2"VisualInspectionHose/Fitting".
TherecommendedprocedureistopressurizetheHoseandcheckforleaksandtovisuallyinspecttheHosefordamage.
Caution:Matches,candles,openflameorothersourcesofignitionshallnotbeusedforHoseinspection.
Leakchecksolutionsshouldberinsedoffafteruse.
5.
0HOSESTORAGE5.
1AgeControl:HoseandHoseAssembliesmustbestoredinamannerthatfacilitatesagecontrolandfirst-inandfirst-outusagebasedonmanufacturingdateoftheHoseandHoseAssemblies.
TheshelflifeofrubberHoseorHoseAssembliesthathavepassedvisualinspectionandaprooftestis10years(40quarters)fromthedateofmanufacture.
TheshelflifeofthermoplasticandpolytetrafluoroethyleneHoseorHoseAssembliesisconsideredtobeunlimited.
5.
2Storage:StoredHoseandHoseAssembliesmustnotbesubjectedtodamagethatcouldreducetheirexpectedservicelifeandmustbeplacedinacool,darkanddryareawiththeendscapped.
StoredHoseandHoseAssembliesmustnotbeexposedtotemperatureextremes,ozone,oils,corrosiveliquidsorfumes,solvents,highhumidity,rodents,insects,ultravioletlight,electromagneticfieldsorradioactivematerials.