MaintenanceInstructions
Troubleshooting
NoRestrictionReading
PossibleCausesHowToCheck
Pluggedttingorvacuumline
RemovethegaugeandapplyavacuumuntilitislockedupattheREDzone.Reinsertthegauge
andholdintheresetbutton.Indicatorwillfullyreturnunlesslineorttingisplugged.Aslowreturnis
normalduetosafetylterintting.
Leakinvacuumline
Applyvacuumtogaugeuntillockedupatredzone.Reconnectgaugeandcloseendoflineairtight.
Holdinresetbutton.Indicatorwilldropslightlyandthennotmoveunlessvacuumlinehasaleak.
LeakingaugeRepeataboveexceptclosegaugeconnectionairtight.
Engineairowtoolowtogeneratea
restrictionreading
Turbochargedenginesmustbefullloadtopullfullengineairow.
AircleanerelementsplitopenVisuallyinspectelement.
HighRestrictionReading
PossibleCausesExplanation
PluggedouterelementParticlesinouterltermediarestrictairow.Replaceouterelement.
Pluggedinnerelement(ifequipped)Replaceinnerelement.
PluggedinletscreensorductsChecksystemupstreamfromrestriction;tapfordebris,damage,orimproperinstallation.
Heavysnoworrain
Temporaryhighrestrictioncanoccurduringarainorsnowstorm;itdisappearsafterdryingout.If
gaugeislockedupatredzone,checkelementsfordamage.Resetgauge.Reuseelementand
recheckgaugereading.
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