
User manual
8
Whenchangethecoolant,cleaningisneededforthe
coolingsystem,thecleaningproceduresare
suggestedasfollows:
◆Emptythecoolingsystem
◆Usewatertorinsecoolingsystem
◆Feed15%~20%condensedcoolanttothecooling
system,timelyrunthegeneratorsetforoneortwo
timesthendischargethecoolant
◆Emptythecoolingsystemthenusenormalmixed
liquidtorinse
◆Ifcontaminantstillexists,thenrepeatthecleaning
procedureuntilnocontaminantexistsinthesystem
◆Afterthesystemhasbeenfullyrinsed,feednew
coolantwhichhasbeenmixedaccordingtospecified
proportion
Note:
Ifthecoolingsystemiscleanedperiodically,onlyrinse
itwithsmallamountofadditivesorcleanwateris
enough.
2.6.4Feedingofcoolant
◆Beforeaddingcoolanttothecoolantsystem,please
makesuretheradiator‘sdischargevalveandthe
engine’sdischargevalvearetightlyclosed.
◆Addthecoolanttothesysteminaproperspeedso
thattoavoidaircockbeingformedinthesystem.
◆Airshallbedischargedthroughtheaddingholeor
thedischargevalveintheenginebody.Ifthecooling
systemisfurnishedwithheater,thecontrolvalvefor
theheatershallbeopened.Ensureventilationofthe
unitwhenaddingthecoolant.
Note:
Theairdischargevalveintheenginebodyshallbe
locatedinthetoppointofthewaterpathornearthe
thermostatorwatertemperaturesensor,oryoucan
slightlyloosethewatertemperaturesensorand
re‐tightenitwhenyouseecoolantrunoutfromitso
thattodischargetheair.
◆Whenaddingthecoolant,thesurfaceofliquidshall
reachtothelevelthatis5centimetersbelowthe
radiator’sweldedsurface(orshallreachthelevel
indicatingLine).Besurethatthegeneratorsethas
stoppedandbecomefullycooledbeforeadding
Coolant.Beforethesystemiscapableofventilation
andtheliquidisaddedtotherequiredlevel,please
don’tstartthegeneratorset.Afterthecoolantbeing
fed,pleasestartandpre‐heatthegeneratorset,and
atthesametimechecktheliquidlevelandadd
coolantifneeded.Thecoolantwhichneedstobe
addedtotheradiatorshallbeofthesame
specificationasthatexistingintheradiator.
◆Forsomegeneratorsetsinstalledwithcoolantfilter,
pleaseopenthefilter’svalvebeforeputintouse.
2.7Lubricantsystem
Lubricantsystemiscomposedofoilpan,oilpump,
strainer,oilpipe,oilcoolingunit,oilfilterunit,and
theoilpathinsideoftheengineandallkindsof
lubricantpartswhichareinrelativemotionetc.The
mainpurposeofthelubricantsystemistoprovide
sustainedtemperedoilfilmbetweenthepartswhich
areinmotionsothattoreducefrictionandwear,and
drawsoffpartoftheheatabsorbedbytheparts,
bathmechanicalpart,improvesealingeffectand
preventrustfromeachpart’ssurface.
Userscandeterminethemodeloflubricantaccording
tothespecificworkingenvironmentandconditions.
Forthefirsttimelubricant,normallyusersshall
changeitwithin100hoursuponandfromthetime
whenthegeneratorsetfirststarted.(detailsreferto
enginemaintenancemanual)
Note:
Thecriticalpointistousequalifiedlubricantoilwhich
iswithproperviscosityandconformtotheengine’s
requirement,andperiodicallychangethelubricantoil
andoilfiltersothattoensurethegeneratorset’s
normalworking.Themalfunctionscausedbywrong
modeloflubricantoilwithlowqualityorlongtimeno
changeoflubricantoil,oroilfilterdonotbelongto
thescopeofwarranty.
WerecommendthathighqualitymultigradeSAE
15W/40highserviceengineoilindieselenginesare
used.Atambienttemperaturesabove‐15degree
Celsiusis15W40.TheminimumAPIoilqualitylevels
recommendedforuseisCH/CI‐4,CHorCI‐4canbe
usedinareaswhereCF4oilisnotyetavailable,but
theoilintervalmustbereducedAPICA,CB,CC,CD,
CE,CG4categoriesnotrecommended,donotuse.
2.8Fuelsystem
Our generator sets requires the fuel‐ diesel shall be
clean, without air and water and with proper
pressure, of which all kinds of parameters such as
sulphur content etc. shall meet national standards,
and end use temperature grade meet the
requirement of customer’s working environment.
Generally generator set’s fuel system includes two
parts, that is, engine’s fuel system and external fuel
system. HYUNDAI is only responsible for installation
of the internal fuel system which includes fuel tank
andconnectingfuelpipesetc.
2.8.1FuelRecommendations