The DPF Regeneration Lamps, Switches and Driver Tips

ACERT ™ Technology for 2007

High Exhaust System Temperature Lamp

TheHESTLampisaremindertothedriverthattheDPFoutlettemperatureismorethanapproximately840ºF(450ºC).Thevehiclespeedmustbelessthan5mph(8km/h)forthislamptoilluminate.Thisconditioncanoccurundernormaloperation.Noactionisrequired.

Driver TipsEngineNoise:Ifthetruckshutsdownduringaregeneration,theCRSpurgeairpumpwillrunforapproximately10minutes.Whenkeyisonattruckstartup,theairpumpwillrunforapproximatelyfiveminutes.Thisisnormaloperationofthepump.

©Caterpillar2007.Allrightsreserved.CAT,CATERPILLAR,theirrespectivelogos,ACERT,“CaterpillarYellow”andthePOWEREDGEtradedress,aswellascorporateandproductidentityusedherein,aretrademarksofCaterpillarandmaynotbeusedwithoutpermission.LEDT7022-03

Note: This information is for reference only.Consult the Caterpillar Engine Operation and Maintenance Manual

or your OEM truck manufacturer’s manual for a complete description of exhaust aftertreatment.

Automatic Regeneration Tocompleteanautomaticregeneration,thedashswitch(ifequipped)mustbeintheautomaticregenerationposition.TheInhibit(Disable)Switch(ifequipped)mustbeintheNotInhibited(NotDisabled)position.Caterpillarrecommendsautomaticregenerationformostapplications.

Manual Regeneration (or Parked Regeneration)IfforanyreasonanautomaticregenerationhasnothappenedandtheDPFsootloadingreacheslevel3,theDPFLampstartstoflashandtheCheckEngineLampcomeson.Atthispoint,Caterpillarrecommendsamanualregeneration(orparkedregeneration).IftheDPFLampandCheckEngineLampdonotgooutafteracompletemanualregeneration,contactyourauthorizedCaterpillardealer.

HEST Lamp (High Exhaust System Temperature)

DPF Lamp (Diesel Particulate Filter)

Check Engine Lamp

Stop Engine Lamp

RegenerationTheCaterpillarRegeneration

System(CRS)isdesignedto

operateinautomaticmodeand

performregenerationasrequired

withoutanydriveraction.

Manualregenerationisabackup

totheautomaticmode.

Foramanualregeneration,allofthefollowingconditionsmustbemet.

a.TheDPFLampmustbeonorflashingwiththeInhibit(Disable)SwitchintheNotInhibited(NotDisabled)position.(SeeDPFSwitchsection.)

b.TheManualRegeneration(orParkedRegeneration)Switchmustbe“on”orpressed(forsomeOEMstheswitchisdepressedforfourseconds).

c.Thedrivermustnotpushthethrottle,clutchorservicebrakepedalsduringamanualregeneration.

d.Thevehiclemustbestopped.

e.Ifthetruckisequippedwithanautomatictransmissionitmustbeinneutral.

f. Theparkingbrakemustbeset.

WhentheseconditionsaremetandtheManualRegeneration(orParkedRegeneration)Switchisonorhasbeenpressed(forsomeOEMstheswitchisdepressedforfourseconds),theDPFLampturnsoffandtheenginespeedautomaticallyincreasestobetween1200rpmand1400rpm.OncetheDPFreachesapproximately840°F(450°C),theHighExhaustSystemTemperature(HEST)Lampilluminates.Whenregenerationiscomplete,theenginereturnstoidle.

Ifanyoftheconditionschange,manualregenerationdeactivatesandtheenginereturnstoidle.IftheDPFLampilluminatesagain,eitheranautomaticregenerationmustbeperformedormanualregenerationmustberestarted.

Methods

Automatic Regeneration Tocompleteanautomaticregeneration,thedashswitch(ifequipped)mustbeintheautomaticregenerationposition.TheInhibit(Disable)Switch(ifequipped)mustbeintheNotInhibited(NotDisabled)position.Caterpillarrecommendsautomaticregenerationformostapplications.

Manual Regeneration (or Parked Regeneration)IfforanyreasonanautomaticregenerationhasnothappenedandtheDPFsootloadingreacheslevel3,theDPFLampstartstoflashandtheCheckEngineLampcomeson.Atthispoint,Caterpillarrecommendsamanualregeneration(orparkedregeneration).IftheDPFLampandCheckEngineLampdonotgooutafteracompletemanualregeneration,contactyourauthorizedCaterpillardealer.

RegenerationTheCaterpillarRegeneration

System(CRS)isdesignedto

operateinautomaticmodeand

performregenerationasrequired

withoutanydriveraction.

Manualregenerationisabackup

totheautomaticmode.

Foramanualregeneration,allofthefollowingconditionsmustbemet.

a.TheDPFLampmustbeonorflashingwiththeInhibit(Disable)SwitchintheNotInhibited(NotDisabled)position.(SeeDPFSwitchsection.)

b.TheManualRegeneration(orParkedRegeneration)Switchmustbe“on”orpressed(forsomeOEMstheswitchisdepressedforfourseconds).

c.Thedrivermustnotpushthethrottle,clutchorservicebrakepedalsduringamanualregeneration.

d.Thevehiclemustbestopped.

e.Ifthetruckisequippedwithanautomatictransmissionitmustbeinneutral.

f. Theparkingbrakemustbeset.

WhentheseconditionsaremetandtheManualRegeneration(orParkedRegeneration)Switchisonorhasbeenpressed(forsomeOEMstheswitchisdepressedforfourseconds),theDPFLampturnsoffandtheenginespeedautomaticallyincreasestobetween1200rpmand1400rpm.OncetheDPFreachesapproximately840°F(450°C),theHighExhaustSystemTemperature(HEST)Lampilluminates.Whenregenerationiscomplete,theenginereturnstoidle.

Ifanyoftheconditionschange,manualregenerationdeactivatesandtheenginereturnstoidle.IftheDPFLampilluminatesagain,eitheranautomaticregenerationmustbeperformedormanualregenerationmustberestarted.

Methods

* The Inhibit (Disable) Switch overrides the Manual Regeneration Switch. For Manual Regeneration to occur, the Inhibit (Disable) Switch must be in the Not Inhibited (Not Disabled) position. For automatic regeneration the Inhibit (Disable) Switch must be in the Not Inhibited (Not Disabled) position and Manual Regeneration Switches must be in the Automatic position.

FLASHING

1.IftheDPFLampisflashingandtheCheckEngineLampisoff,theECMisrequestinganautomaticregenerationbuttheInhibit(Disable)SwitchisintheInhibitposition.PlacetheswitchintheautomaticorNotInhibitedpositionandcontinuetodrive.TheDPFLampwillstopflashingandanautomaticregenerationwillbegin.

2.TheDPFLampisonsolid.Thedrivermustinitiateanautomaticormanualregenerationassoonassafelypossible.

3.IftheDPFLampisflashingandtheCheckEngineLampison,level3ofsootloadinghasbeenreachedandaregeneration,eitherautomaticormanual,mustbeperformedassoonassafelypossible.

4.Ifregenerationcannotbeachieved,thetruckshouldbetakentoanauthorizedCaterpillar®dealer.

5.Ifthevehiclecontinuestobedrivenwithoutregeneration,theengineprogressivelyderatesdowntoareducedhorsepowerlevelwhichwilllimitmaximumvehiclespeed.

6.AtLevel4ofsootloading,theStopEngineLampcomeson.Ifregenerationisnotstartedimmediately,theStopEngineLampwillbegintoflashandtheenginewillshutoffin30seconds.

7.Theenginemayberestartedandthedrivermustinitiateregeneration.Ifthevehiclecontinuestobedrivenwithoutregeneration,theengineshutsdownforasecondtime.

8.Afterasecondshutdown,regenerationmaynotbeinitiatedandtheenginewillrunforonly60secondsatatime.

FLASHING

SOLID

Dash Switch Functions(if equipped)

Thedashswitchallowsthedrivertocontroltheregenerationprocess.

1. Automatic (Preferred Position):Aregenerationcyclestartsautomaticallywhenengineconditionswarrant.Thedriverdoesnotneedtotakeanyaction.

2. Disabled or Inhibit: Engagingthisswitchstopstheregenerationprocess.

CAuTIon: The DPF and regeneration system may be damaged if this switch remains in this position for an extended time.

3. Manual Regeneration (or Parked Regeneration) Start: ThedrivercaninitiateamanualregenerationbymovingtheswitchtotheManual(Parked)Regenerationposition.SomeOEMswitchesrequiretheswitchtobeheldforfourseconds.TheDPFLampmustbeonorflashingformanualregenerationtooccur.

DPF Switch(if equipped)

Theswitchespicturedtotherightareforexampleonly.Theymayormaynotappearonyourvehicle’sdashboard;everytruckmanufacturerusesadifferentarrangement.Forspecificinstruction,consultyourOEMtruckmanufacturer’smanual.

Three Position Switch

DoWn: Inhibit

(orDisable)

MIDDLE:Automatic

Regeneration

Front View

uP:StartManual/ParkedRegeneration

Side Views

PREFERRED

Two Position Manual/Parked Regeneration Switch

Front View

uP:Manual/ParkedRegeneration

DoWn:Automatic

Regeneration

Side Views

PREFERRED

Two Position Switch Inhibit (Disable) Regeneration*

Front View

uP:Inhibit

(orDisable)

DoWn:NotInhibited

(orNotDisabled)

Side Views

PREFERRED

FLASHING

Soot Loading Warnings

Soot Loading

Soot Level 1 2 3 4

SootloadingisanaccumulationofparticulatematterintheDPF.Duringnormal

operation,thelampsshouldnotcomeon,buttheremaybecircumstances

whentheydo.Followingisabriefsummaryofwhatthelampsmeanand

whattodoiftheyshouldlightup.

Ifthelampsremainonafterthe

recommendedactions,contact

yourCaterpillarauthorizeddealer.

* The Inhibit (Disable) Switch overrides the Manual Regeneration Switch. For Manual Regeneration to occur, the Inhibit (Disable) Switch must be in the Not Inhibited (Not Disabled) position. For automatic regeneration the Inhibit (Disable) Switch must be in the Not Inhibited (Not Disabled) position and Manual Regeneration Switches must be in the Automatic position.

FLASHING

1.IftheDPFLampisflashingandtheCheckEngineLampisoff,theECMisrequestinganautomaticregenerationbuttheInhibit(Disable)SwitchisintheInhibitposition.PlacetheswitchintheautomaticorNotInhibitedpositionandcontinuetodrive.TheDPFLampwillstopflashingandanautomaticregenerationwillbegin.

2.TheDPFLampisonsolid.Thedrivermustinitiateanautomaticormanualregenerationassoonassafelypossible.

3.IftheDPFLampisflashingandtheCheckEngineLampison,level3ofsootloadinghasbeenreachedandaregeneration,eitherautomaticormanual,mustbeperformedassoonassafelypossible.

4.Ifregenerationcannotbeachieved,thetruckshouldbetakentoanauthorizedCaterpillar®dealer.

5.Ifthevehiclecontinuestobedrivenwithoutregeneration,theengineprogressivelyderatesdowntoareducedhorsepowerlevelwhichwilllimitmaximumvehiclespeed.

6.AtLevel4ofsootloading,theStopEngineLampcomeson.Ifregenerationisnotstartedimmediately,theStopEngineLampwillbegintoflashandtheenginewillshutoffin30seconds.

7.Theenginemayberestartedandthedrivermustinitiateregeneration.Ifthevehiclecontinuestobedrivenwithoutregeneration,theengineshutsdownforasecondtime.

8.Afterasecondshutdown,regenerationmaynotbeinitiatedandtheenginewillrunforonly60secondsatatime.

FLASHING

SOLID

Dash Switch Functions(if equipped)

Thedashswitchallowsthedrivertocontroltheregenerationprocess.

1. Automatic (Preferred Position):Aregenerationcyclestartsautomaticallywhenengineconditionswarrant.Thedriverdoesnotneedtotakeanyaction.

2. Disabled or Inhibit: Engagingthisswitchstopstheregenerationprocess.

CAuTIon: The DPF and regeneration system may be damaged if this switch remains in this position for an extended time.

3. Manual Regeneration (or Parked Regeneration) Start: ThedrivercaninitiateamanualregenerationbymovingtheswitchtotheManual(Parked)Regenerationposition.SomeOEMswitchesrequiretheswitchtobeheldforfourseconds.TheDPFLampmustbeonorflashingformanualregenerationtooccur.

DPF Switch(if equipped)

Theswitchespicturedtotherightareforexampleonly.Theymayormaynotappearonyourvehicle’sdashboard;everytruckmanufacturerusesadifferentarrangement.Forspecificinstruction,consultyourOEMtruckmanufacturer’smanual.

Three Position Switch

DoWn: Inhibit

(orDisable)

MIDDLE:Automatic

Regeneration

Front View

uP:StartManual/ParkedRegeneration

Side Views

PREFERRED

Two Position Manual/Parked Regeneration Switch

Front View

uP:Manual/ParkedRegeneration

DoWn:Automatic

Regeneration

Side Views

PREFERRED

Two Position Switch Inhibit (Disable) Regeneration*

Front View

uP:Inhibit

(orDisable)

DoWn:NotInhibited

(orNotDisabled)

Side Views

PREFERRED

FLASHING

Soot Loading Warnings

Soot Loading

Soot Level 1 2 3 4

SootloadingisanaccumulationofparticulatematterintheDPF.Duringnormal

operation,thelampsshouldnotcomeon,buttheremaybecircumstances

whentheydo.Followingisabriefsummaryofwhatthelampsmeanand

whattodoiftheyshouldlightup.

Ifthelampsremainonafterthe

recommendedactions,contact

yourCaterpillarauthorizeddealer.