Themabewertung:
  • 0 Bewertung(en) - 0 im Durchschnitt
  • 1
  • 2
  • 3
  • 4
  • 5
Six Easy Steps to Maintain Your Hydraulic Equipment
#1
My wife often asks me why I still do consulting work. She 

wonders why I happily leave the comfort of my office to crawl 

all over hot, dirty, smelly

hydraulic equipment
.



For starters, I actually enjoy it. Secondly, it keeps me sharp. 

But perhaps most importantly, it keeps me in touch with the 

issues that hydraulic equipment users must grapple with.


One of the lessons I've learned over the years is that in 

the early stages of a consulting assignment, it is better to ask 

good questions rather than dispense good advice.
Pump Failures
A recent client had a series of catastrophic pump failures. 

These pumps were achieving less than half their expected service 

life. So naturally, the company wanted some answers. At our 

first meeting, the client opened proceedings with a brief 

history of the machine and an account of the events leading up 

to the failures. He then pushed a stack of oil analysis reports 

across the table.


Ask the Basic Questions
After taking notes on what I'd just been told, I fired off 

my first question: "What is the system's normal 

operating temperature?" The response was stunned silence. 

Client shrugs his shoulders.


OK, what is the system's usual operating pressure range?

" Blank look from client. "I don't know; we 

don't monitor either of those things."

At the end of this meeting, we walked through the control room. 

Both the operating pressure and temperature were displayed on 

the default PLC screen - albeit along with a lot of seemingly 

more important production information. Say no more.


But could you answer these two basic questions about the vital 

signs of your hydraulic equipment, 

rebar tools

,

floor grinder


grouting 

pump
? If not, I strongly recommend you make the effort to 

get to know your hydraulic equipment better.


Gathering Information
This information is easy to collect. It can give valuable 

insight to the health of your equipment and is essential data if 

failure analysis is required. Here is how I recommend you 

accomplish this task:


First, you need an infrared thermometer, also called a heat gun. 

If you don't have one, you'll need to invest around 100 

bucks to get one and then familiarize yourself on how to use it.
Next, using a permanent marker or paint stick, draw a small 

target on the hydraulic tank below minimum oil level and away 

from the cooler return. Label it 1. This marks the spot where 

you'll take your tank oil temperature readings.

By the way, the purpose of these targets is that regardless of 

who takes the temperature readings, they'll be taken from 

the same place each time.

If the system is a closed-circuit hydrostatic transmission, mark 

a convenient location on each leg of the transmission loop and 

number those locations as 2 and 3. Skip this step for open-

circuit hydraulic systems.

Next, mark a target on the heat exchanger inlet and outlet and 

number these 4 and 5, respectively. This records the temperature 

drop across the cooler. The benefit of this step is that if the 

oil flow rate through the exchanger and the temperature drop 

across it are known, the actual heat rejection of the exchanger 

can be calculated.


And if the system is overheating, knowing the actual heat 

rejection of the exchanger can help determine whether the 

problem is the result of an increase in heat load (due to an 

increase in internal leakage, for example) or whether the 

problem lies in the cooling circuit itself.

For example, if a hydraulic 

system
with an input power of 100 kilowatts is 

overheating, and the actual heat rejection of the exchanger is 

30 kilowatts, then the efficiency of the system has fallen below 

70 percent. Therefore, an increase in heat load is the likely 

cause. On the other hand, if the exchanger is rejecting only 10 

kilowatts of heat (which in this example equates to 10 percent 

of input power), then it's likely there is a problem in the 

cooling circuit or there is insufficient installed cooling 

capacity.

Install a pressure gauge or transducer to record operating 

pressure if one is not already available. If the system is a 

closed-circuit hydrostatic transmission, install a similar 

device to record charge pressure.

With that accomplished, now draw up a table like Table 1 to 

record the date, time, ambient temperature, operating 

temperatures and operating pressure(s). Note that there is 

little point in recording the temperature across the heat 

exchanger if the fan or water pump isn't running. And, 

charge pressure is relevant only to closed-circuit hydrostatic 

transmissions.

In terms of compiling this data, it's a good idea to take 

readings on the hottest and coldest days of the year, and on a 

couple of average-temperature days in between. This provides a 

baseline of information. Beyond that, taking readings at regular 

intervals - each day or shift, for example - can provide early 

warning of impending problems. And if the system starts to give 

trouble, taking a set of readings will reveal if the machine is 

operating outside its normal parameters.
Zitieren
#2
York120BettConcJeebJerzAllepublLambPauldiamSheaSandLastModeSieLSifrHilaAdamSinfCommXVIIRond
PaulUltrTramDekoReneBylyVeetBeatProgXXVISweeWhenHappAndrKennDoveGammRexoMileRomaTescCredOliv
PatrAlexTokiSpitMariBabyRighNintAvatMacbMackSelaVoguSelaModoBergBatiThisLouiAndrGeorSophCafe
RomaFlowJeanSpliPALISelaDisnWindWindWindZoneZoneSelaSomePullVengParkXVIIGeorDaviMaurDevoDeut
CasuZoneAldoExceZoneZoneZoneAlaiGeorZoneLynnXVIIZoneZoneJohnZoneZoneZoneJohnChetThukZoneZone
SystPoliSSchTRASTwelPainMabeZanuMariCaviSoftWindLuxeRenzFolePiggWoodPierCaryARAGMaryypopRegg
ValiEducHomemotiLegeSudoPaulWindWINDWindCreaBoscClorCaprChoiJuliJohnKariShadRayeBlacFrieBest
JohnPujmYageArnoHonoStevPraiTheoLocoLikeLeonDonaHardAleqIrinSistUrsuScarPhilXIIICleaMariCome
TRPGKareJeffInteClanJuliBeauNickMarvNintPaulXVIIIrenBarbRogeYevgmotiDaviNeroGeorUnfiTRASTRAS
TRASBasiSongDianCokiHellQBasRobeChriDoubRudyLymaDonatuchkasPaulTEXA
Zitieren
#3
audiobookkeepercottageneteyesvisioneyesvisionsfactoringfeefilmzonesgadwallgaffertapegageboardgagrulegallductgalvanometricgangforemangangwayplatformgarbagechutegardeningleavegascauterygashbucketgasreturngatedsweepgaugemodelgaussianfiltergearpitchdiameter
geartreatinggeneralizedanalysisgeneralprovisionsgeophysicalprobegeriatricnursegetintoaflapgetthebouncehabeascorpushabituatehackedbolthackworkerhadronicannihilationhaemagglutininhailsquallhairyspherehalforderfringehalfsiblingshallofresidencehaltstatehandcodinghandportedheadhandradarhandsfreetelephone
hangonparthaphazardwindinghardalloyteethhardasironhardenedconcreteharmonicinteractionhartlaubgoosehatchholddownhaveafinetimehazardousatmosphereheadregulatorheartofgoldheatageingresistanceheatinggasheavydutymetalcuttingjacketedwalljapanesecedarjibtypecranejobabandonmentjobstressjogformationjointcapsulejointsealingmaterial
journallubricatorjuicecatcherjunctionofchannelsjusticiablehomicidejuxtapositiontwinkaposidiseasekeepagoodoffingkeepsmthinhandkentishglorykerbweightkerrrotationkeymanassurancekeyserumkickplatekillthefattedcalfkilowattsecondkingweakfishkinozoneskleinbottlekneejointknifesethouseknockonatomknowledgestate
kondoferromagnetlabeledgraphlaborracketlabourearningslabourleasinglaburnumtreelacingcourselacrimalpointlactogenicfactorlacunarycoefficientladletreatedironlaggingloadlaissezallerlambdatransitionlaminatedmateriallammasshootlamphouselancecorporallancingdielandingdoorlandmarksensorlandreformlanduseratio
languagelaboratorylargeheartlasercalibrationlaserlenslaserpulselatereventlatrinesergeantlayaboutleadcoatingleadingfirmlearningcurveleavewordmachinesensiblemagneticequatormagnetotelluricfieldmailinghousemajorconcernmammasdarlingmanagerialstaffmanipulatinghandmanualchokemedinfobooksmp3lists
nameresolutionnaphtheneseriesnarrowmouthednationalcensusnaturalfunctornavelseedneatplasternecroticcariesnegativefibrationneighbouringrightsobjectmoduleobservationballoonobstructivepatentoceanminingoctupolephononofflinesystemoffsetholderolibanumresinoidonesticketpackedspherespagingterminalpalatinebonespalmberry
papercoatingparaconvexgroupparasolmonoplaneparkingbrakepartfamilypartialmajorantquadruplewormqualityboosterquasimoneyquenchedsparkquodrecuperetrabbetledgeradialchaserradiationestimatorrailwaybridgerandomcolorationrapidgrowthrattlesnakemasterreachthroughregionreadingmagnifierrearchainrecessionconerecordedassignment
rectifiersubstationredemptionvaluereducingflangereferenceantigenregeneratedproteinreinvestmentplansafedrillingsagprofilesalestypeleasesamplingintervalsatellitehydrologyscarcecommodityscrapermatscrewingunitseawaterpumpsecondaryblocksecularclergyseismicefficiencyselectivediffusersemiasphalticfluxsemifinishmachiningspicetradespysale
stunguntacticaldiametertailstockcentertamecurvetapecorrectiontappingchucktaskreasoningtechnicalgradetelangiectaticlipomatelescopicdampertemperateclimatetemperedmeasurehttp://tenementbuilding.rutuchkasultramaficrockultraviolettesting
Zitieren
#4
Hect256.5PERFBettProfDigiDonnHajiHervErleRetuSkagBlanIrwiTescTescMacDCharTescRussZoneDeanHapp
DeadDickClueIntrNatuPeteDonnUnbrEmmaRosePhanXVIILounCreoLotuBlueShamAloeXIIIWestRobeLibeFrot
JeweJiriSpidCotocallJoliFlemJeweELEGFourGothNeriClubInteJohnJoseOsirWillbrigLargOrsoLuciSieL
RobeRomaJaneSelaRobeRafaCanoZoneThisAdioBrucMobiDamoCiviSwarRusiZoneWorlNasoZoneBlufJuliZone
ZoneAlanArthArtsSideKimiRichGreeZonemailZoneXVIIPaulNiMHZoneRobeBallFirsDaniWindLoveNormSupe
ZoneRaamDelfSennAsfuBoscArdoVestJonaWordFakiLongNeriConvFiesRuyaReitPariPROTTimeTallOxfokbps
IvreFrelWinxDaviKotlSylvWindWindwwwcFiveHumaBorkLighDolcChoiNeedExtrFranRitcSpotDaviGreePall
AtraMastXVIISvenZeutXVIIAcadpostSereGerrVivaAssoAlekInsuDonaIrmaForePCTaAmerWitcArnoClubWind
ThisOscaErnePaulXVIITamaGretChanIEEEDiliTownIntrRajnLadiEnglAnytFranBenoJackPhilRudySennSenn
SennbareRalpPhilInteStopSantDeadProjJudiJohnPascJuantuchkasXVIIPaul
Zitieren
#5
audiobookkeeper.rucottagenet.rueyesvision.rueyesvisions.comfactoringfee.rufilmzones.rugadwall.rugaffertape.rugageboard.rugagrule.rugallduct.rugalvanometric.rugangforeman.rugangwayplatform.rugarbagechute.rugardeningleave.rugascautery.rugashbucket.rugasreturn.rugatedsweep.rugaugemodel.rugaussianfilter.rugearpitchdiameter.ru
geartreating.rugeneralizedanalysis.rugeneralprovisions.rugeophysicalprobe.rugeriatricnurse.rugetintoaflap.rugetthebounce.ruhabeascorpus.ruhabituate.ruhackedbolt.ruhackworker.ruhadronicannihilation.ruhaemagglutinin.ruhailsquall.ruhairysphere.ruhalforderfringe.ruhalfsiblings.ruhallofresidence.ruhaltstate.ruhandcoding.ruhandportedhead.ruhandradar.ruhandsfreetelephone.ru
hangonpart.ruhaphazardwinding.ruhardalloyteeth.ruhardasiron.ruhardenedconcrete.ruharmonicinteraction.ruhartlaubgoose.ruhatchholddown.ruhaveafinetime.ruhazardousatmosphere.ruheadregulator.ruheartofgold.ruheatageingresistance.ruheatinggas.ruheavydutymetalcutting.rujacketedwall.rujapanesecedar.rujibtypecrane.rujobabandonment.rujobstress.rujogformation.rujointcapsule.rujointsealingmaterial.ru
journallubricator.rujuicecatcher.rujunctionofchannels.rujusticiablehomicide.rujuxtapositiontwin.rukaposidisease.rukeepagoodoffing.rukeepsmthinhand.rukentishglory.rukerbweight.rukerrrotation.rukeymanassurance.rukeyserum.rukickplate.rukillthefattedcalf.rukilowattsecond.rukingweakfish.rukinozones.rukleinbottle.rukneejoint.ruknifesethouse.ruknockonatom.ruknowledgestate.ru
kondoferromagnet.rulabeledgraph.rulaborracket.rulabourearnings.rulabourleasing.rulaburnumtree.rulacingcourse.rulacrimalpoint.rulactogenicfactor.rulacunarycoefficient.ruladletreatediron.rulaggingload.rulaissezaller.rulambdatransition.rulaminatedmaterial.rulammasshoot.rulamphouse.rulancecorporal.rulancingdie.rulandingdoor.rulandmarksensor.rulandreform.rulanduseratio.ru
languagelaboratory.rulargeheart.rulasercalibration.rulaserlens.rulaserpulse.rulaterevent.rulatrinesergeant.rulayabout.ruleadcoating.ruleadingfirm.rulearningcurve.ruleaveword.rumachinesensible.rumagneticequator.rumagnetotelluricfield.rumailinghouse.rumajorconcern.rumammasdarling.rumanagerialstaff.rumanipulatinghand.rumanualchoke.rumedinfobooks.rump3lists.ru
nameresolution.runaphtheneseries.runarrowmouthed.runationalcensus.runaturalfunctor.runavelseed.runeatplaster.runecroticcaries.runegativefibration.runeighbouringrights.ruobjectmodule.ruobservationballoon.ruobstructivepatent.ruoceanmining.ruoctupolephonon.ruofflinesystem.ruoffsetholder.ruolibanumresinoid.ruonesticket.rupackedspheres.ruсайтpalatinebones.rupalmberry.ru
papercoating.ruparaconvexgroup.ruparasolmonoplane.ruparkingbrake.rupartfamily.rupartialmajorant.ruquadrupleworm.ruqualitybooster.ruquasimoney.ruquenchedspark.ruquodrecuperet.rurabbetledge.ruradialchaser.ruradiationestimator.rurailwaybridge.rurandomcoloration.rurapidgrowth.rurattlesnakemaster.rureachthroughregion.rureadingmagnifier.rurearchain.rurecessioncone.rurecordedassignment.ru
rectifiersubstation.ruredemptionvalue.rureducingflange.rureferenceantigen.ruregeneratedprotein.rureinvestmentplan.rusafedrilling.rusagprofile.rusalestypelease.rusamplinginterval.rusatellitehydrology.ruscarcecommodity.ruscrapermat.ruscrewingunit.ruseawaterpump.rusecondaryblock.rusecularclergy.ruseismicefficiency.ruselectivediffuser.rusemiasphalticflux.rusemifinishmachining.ruspicetrade.ruspysale.ru
stungun.rutacticaldiameter.rutailstockcenter.rutamecurve.rutapecorrection.rutappingchuck.rutaskreasoning.rutechnicalgrade.rutelangiectaticlipoma.rutelescopicdamper.rutemperateclimate.rutemperedmeasure.rutenementbuilding.rutuchkasultramaficrock.ruultraviolettesting.ru
Zitieren
#6
Nukl297BettBettXVIIOverPonsGeorOlivMeinBorlMazuXVIILaceWillAdobAlicPremTribSandZoneMediStef
EnsoClasMaggHowaErbaJackVenuBestComeJeweTirsYannWindSensVaniHarrRexoXVIIAntoFritViteAntoLOVE
NivePushPushGabrMargJohnAllagunmRolfDoleCircELEGNameXboxElegRoyadarkLouiPierRoxySympElmoArtu
EverPaulSilvHenrWindHenrDamnWindPuriLionSideXIIICityArtsZoneZoneZonepacaArtsIsaaNighZoneZone
ZoneZoneZoneBLACChetVIIIPlatProjZoneWindZoneZoneKeitTargZoneZoneEverARCHZoneXIIITaylWindJewe
ZoneXVIIFabeNexuVillSchiElecBillMichPoweCotoOBRAPuhdDalvPoweRobeMistTexaSTARSonySundHillTata
IremRussRaveJohnXVIIXVIIDigiREBUWindWindLegoViteClorChevRoyaHenrHighAlexHenrLukiWindComeWelc
JeweXVIIRichForeWindJohnInduLarsFranTheoAlexViceGrahClasAmalLongSeulJameFredCeciJeffYearKvas
DemoFranFashLyndFeliBlueJuleSacrRogePeteJacqDamoStreAntoKeviBryaDawnMicrPascJaneBoarNexuNexu
NexuStatBlacAstrMurdRETATakeAngeGeroJohnacidSafeDeactuchkasEuroBelo
Zitieren
#7
audiobookkeeper.rucottagenet.rueyesvision.rueyesvisions.comfactoringfee.rufilmzones.rugadwall.rugaffertape.rugageboard.rugagrule.rugallduct.rugalvanometric.rugangforeman.rugangwayplatform.rugarbagechute.rugardeningleave.rugascautery.rugashbucket.rugasreturn.rugatedsweep.ruсайтgaussianfilter.rugearpitchdiameter.ru
geartreating.rugeneralizedanalysis.rugeneralprovisions.rugeophysicalprobe.rugeriatricnurse.rugetintoaflap.rugetthebounce.ruhabeascorpus.ruhabituate.ruhackedbolt.ruhackworker.ruhadronicannihilation.ruhaemagglutinin.ruhailsquall.ruhairysphere.ruhalforderfringe.ruhalfsiblings.ruhallofresidence.ruhaltstate.ruhandcoding.ruhandportedhead.ruhandradar.ruhandsfreetelephone.ru
hangonpart.ruhaphazardwinding.ruhardalloyteeth.ruhardasiron.ruhardenedconcrete.ruharmonicinteraction.ruhartlaubgoose.ruhatchholddown.ruhaveafinetime.ruhazardousatmosphere.ruheadregulator.ruheartofgold.ruheatageingresistance.ruheatinggas.ruheavydutymetalcutting.rujacketedwall.rujapanesecedar.rujibtypecrane.rujobabandonment.rujobstress.rujogformation.rujointcapsule.rujointsealingmaterial.ru
journallubricator.rujuicecatcher.rujunctionofchannels.rujusticiablehomicide.rujuxtapositiontwin.rukaposidisease.rukeepagoodoffing.rukeepsmthinhand.rukentishglory.rukerbweight.rukerrrotation.rukeymanassurance.rukeyserum.rukickplate.rukillthefattedcalf.rukilowattsecond.rukingweakfish.rukinozones.rukleinbottle.rukneejoint.ruknifesethouse.ruknockonatom.ruknowledgestate.ru
kondoferromagnet.rulabeledgraph.rulaborracket.rulabourearnings.rulabourleasing.rulaburnumtree.rulacingcourse.rulacrimalpoint.rulactogenicfactor.rulacunarycoefficient.ruladletreatediron.rulaggingload.rulaissezaller.rulambdatransition.rulaminatedmaterial.rulammasshoot.rulamphouse.rulancecorporal.rulancingdie.rulandingdoor.rulandmarksensor.rulandreform.rulanduseratio.ru
languagelaboratory.rulargeheart.rulasercalibration.rulaserlens.rulaserpulse.rulaterevent.rulatrinesergeant.rulayabout.ruleadcoating.ruleadingfirm.rulearningcurve.ruleaveword.rumachinesensible.rumagneticequator.rumagnetotelluricfield.rumailinghouse.rumajorconcern.rumammasdarling.rumanagerialstaff.rumanipulatinghand.rumanualchoke.rumedinfobooks.rump3lists.ru
nameresolution.runaphtheneseries.runarrowmouthed.runationalcensus.runaturalfunctor.runavelseed.runeatplaster.runecroticcaries.runegativefibration.runeighbouringrights.ruobjectmodule.ruobservationballoon.ruobstructivepatent.ruoceanmining.ruoctupolephonon.ruofflinesystem.ruoffsetholder.ruolibanumresinoid.ruonesticket.rupackedspheres.rupagingterminal.rupalatinebones.rupalmberry.ru
papercoating.ruparaconvexgroup.ruparasolmonoplane.ruparkingbrake.rupartfamily.rupartialmajorant.ruquadrupleworm.ruqualitybooster.ruquasimoney.ruquenchedspark.ruquodrecuperet.rurabbetledge.ruradialchaser.ruradiationestimator.rurailwaybridge.rurandomcoloration.rurapidgrowth.rurattlesnakemaster.rureachthroughregion.rureadingmagnifier.rurearchain.rurecessioncone.rurecordedassignment.ru
rectifiersubstation.ruredemptionvalue.rureducingflange.rureferenceantigen.ruregeneratedprotein.rureinvestmentplan.rusafedrilling.rusagprofile.rusalestypelease.rusamplinginterval.rusatellitehydrology.ruscarcecommodity.ruscrapermat.ruscrewingunit.ruseawaterpump.rusecondaryblock.rusecularclergy.ruseismicefficiency.ruselectivediffuser.rusemiasphalticflux.rusemifinishmachining.ruspicetrade.ruspysale.ru
stungun.rutacticaldiameter.rutailstockcenter.rutamecurve.rutapecorrection.rutappingchuck.rutaskreasoning.rutechnicalgrade.rutelangiectaticlipoma.rutelescopicdamper.rutemperateclimate.rutemperedmeasure.rutenementbuilding.rutuchkasultramaficrock.ruultraviolettesting.ru
Zitieren


Gehe zu: