Case CX490D - SCR System Cleaning and Warning Inducements

3-CONTROLSANDINSTRUMENTS
SCRCLEANING
TheSCRsystemrequiresaperiodicalcleaningprocessinordertogranttheproperfunctionality.
DuringtheSCRCLEANINGprocess,makesurethattheexcavatorisinawellventilatedarea.DuringtheSCR
cleaningprocess,neverstoptheengineinordertoavoidseveredamagestotheSCRsystemandtotheengineitself.
NOTICE:DuringtheSCRCLEANINGprocess,theoperatingcharacteristicsoftheengineandofthehydraulicsystem
maychange,andsomewhitesmokemaygetoutfromthetailpipe.
NOTICE:Besuretoclosetheenginehoodproperly.TheexhaustgasgeneratedduringSCRCLEANINGcouldmelt
theinsulationandothermaterialinsidetheenginehood,causingdamagetotheexcavator.
NOTICE:NevertouchtheSCRblockandtheexhaustpipingsastheSCRCLEANINGprocessisrunning.Thetem-
peraturesofthesecomponentsmaygethighenoughtoburnpeople,andtoigniteormeltmaterials.DuringSCR
CLEANING,makesurethatthemachineisfarawayfromanyammableandexplosivematerial,suchasdriedgrass
orpaperscraps.
ThemachinecontrolsystemdenestwodifferentcleaningprocessesfortheSCRsystem:
1.AUTOSCRCLEANING
2.MANUALSCRCLEANING
Thetypeandtheconditionofthecleaningprocessisindicatedbyaspecicicon:
Green:AUTOSCRCLEANINGisrunning.
Green(blinking):AUTOSCRCLEANINGissuspendedandhastoberesumed.
Orange:MANUALSCRCLEANINGisrunning.
Orange(blinking):MANUALSCRCLEANINGisrequested,orissuspendedandhastoberesumed.
Greenslashed:MANUALSCRCLEANINGONLYfunctionisactive.
Red:SCRCLEANINGisdisabled.
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