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Macs 609 Certification

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Macs 609 Certification

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MACS 609 CERTIFICATION

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MACS 609 CERTIFICATION

If70lubricant70is70removed70by70recovery70equipment70during70system70refrigerant70remo
val,70what70must70be70done70with70the70lubricant?70-70answer--Re-
install70lubricant70removed70by70the70recovery70equipment

Before70reuse,70what70must70be70done70with70HFC-
134a70that70has70been70recovered70from70a70mobile70A/C70system70using70recovery-
only70equipment?70-70answer--Question70270options:
Recycle70the70HFC-134a70before70reuse70using70certified70equipment

When70can70HFC-
134a70become70combustible70in70a70mobile70air70conditioning70system?70-70answer--
If70shop70air70is70used70in70the70system70in70an70attempt70to70check70for70leaks70and70H
FC-134a70is70present

Which70type70of70mobile70A/
C70system70will70usually70require70additional70time70/70precautions70to70extract70all70the70
refrigerant?70-70answer--Accumulator70type

Electronic70leak70detectors70certified70to70SAE70J279170have70the70capacity70of70identify
ing70leakage70rates70as70low70as:70-70answer--0.1570ounces70per70year

When70recovery/
recycling70equipment70is70used70to70remove70refrigerant70from70a70mobile70A/
C70system,70how70much70lubricant70will70be70removed70during70the70operation?70-
70answer--Generally,70very70little,70if70any

Why70is70it70necessary70to70insure70that70service70port70caps70containing70good70seals70
are70installed?70-70answer--To70minimize70refrigerant70loss

Which70of70the70following70statements70is70correct70about70flushing70A/C70systems?70-
70answer--Flushing70solvents70may70remain70in70A/C70systems,70causing70problems

When70using70an70HFC-
134a70refrigerant70recovery70machine,70after70competing70the70first70recovery70process,7
0how70long70must70you70wait,70then70check70the70machine's70gauges70for70a70rise70in70p
ressure70above70vacuum,70which70would70indicate70that70the70system70still70contains70s
ome70refrigerant?70-70answer--570minutes

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Uploaded on: July 22, 2025
Number of pages: 3
Written in: 2024/2025
Type: Exam (elaborations)
Contains: Questions & answers

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