Mack V-MAC IV - Aftertreatment DPF Regeneration and PTO Operation

44V-MACCo-PilotOperator'sManual
AftertreatmentDPFRegenerationandPTO
Operation
Foraftertreatmentdieselparticulatelter(DPF)regenerationtooccur,enoughheat
mustbegeneratedinthedieseloxidationcatalyst(DOC).Heatisgeneratedby
increasingenginespeed(RPM)toaround1,100RPMonvehicleswithacatalyzed
aftertratmentsystem.ForvehiclesthatoperateapowertakeoffandhaveaDPF,the
PTOmusthaveamaximumratedspeedabovetheminimumRPMlistedinthetables
belowsothataftertreatmentdieselparticulatelter(DPF)regeneration(whether
automaticormanual)canoccurwhencommanded.
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Figure18–MinimumEngineSpeedsforMP7withCatDPF
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Figure19—MinimumEngineSpeedsforMP8withCatDPF
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Figure20—MinimumEngineSpeedsforMP10withCatDPF
Note:ForvehiclesequippedwithacatalyzedDPF,thePTOmustbeactivatedbya
switchthatprovidesbothengagementandspeedinformationtothevehicleelectronic
controlunit(VECU)whenthePTOisengaged.Thevehicleoperatormustuseengine
speedcontroltosetenginespeedwhenthePTOisinoperation.
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