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MACS 609 CERTIFICATION QUESTIONS WITH CORRECT ANSWER1.
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MACS 609 CERTIFICATION QUESTIONS WITH CORRECT ANSWER1.
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MACS 609 CERTIFICATION QUESTIONSWITH CORRECT ANSWERS
The hhuse hhof hhultraviolet hh(UV) hhor hhfluorescent hhdyes hhin hhan hhHFO-1234yf
hhsystem hhis: hh- hhAnswer hhApproved hhby hhsome hhvehicle hhmanufactures hhbut hhnot
hhby hhothers
One hheffect hhof hhsome hhrefrigerant hhgases hhin hhthe hhatmosphere hhis hhthat hhthey: hh-
hhAnswer hhContribute hhto hhtrapping hhheat
Which hhitem hhis hhnot hhmentioned hhin hhthe hhSAE hhJ2099 hhStandard hhof hhrefrigerant
hhpurity? hh- hhAnswer hhSludge
When hhit hhhas hhbeen hhdetermined hhthat hhan hhA/C hhsystem hhhas hha hhlow hhrefrigerant
hhcharge, hhwhat hhshould hhbe hhdone? hh- hhAnswer hhPerform hha hhleak hhtest hhprocedure
Which hhitem hhis hhnot hhmentioned hhin hhthe hhSAE hhJ1991 hhstandard hhof hhrefrigerant
hhpurity? hh- hhAnswer hhAcid
Which hhof hhthe hhfollowing hhis hhunlikely hhto hhaffect hhrefrigerant hhcharge hhaccuracy? hh-
hhAnswer hhA/C hhCompressor
CFC-12 hhrecovery hhequipment hhhas hhSAE hh3/8-inch hhservice hhfittings. hhHFC-134a
hhrecovery hhequipment hhhas: hh- hhAnswer hhQuick-couple hhdesign
What hhis hhthe hhadvantage hhof hhusing hhrefrigerant hhidentification hhequipment? hh-
hhAnswer hhAllows hhthe hhability hhto hhdetermine hhwhat hhtype hhof hhrefrigerant hhis hhin
hhsystem
If hhan hhHFC-134a hhA/C hhsystem hhstill hhhas hhpressure hhafter hhthe hhfirst hhrefrigerant
hhrecovery hhprocess hhis hhcomplete hh(including hhthe hhfive-minute hhpause), hhadditional
hhrecovery hhis hhnecessary hhuntil hhthe hhsystem hhvacuum hhlevel hhremains hhstable hhfor:
hh- hhAnswer hh2 hhminutes
Paid hhtechnicians hhwho hhservice hhor hhrepair hhbuses hhusing hhHCFC-22 hhas
hhrefrigerant, hhand/or hhservice hhor hhrepair hhaircraft hhor hhship/boat hhcargo
hhrefrigeration hhequipment: hh- hhAnswer hhMust hhbe hhSection hh608 hhType hhII hhCertified
, Specific hhsafety hhinformation hhfor hhmanaging hhincidents hhinvolving hhrefrigerants hhand
hhother hhchemicals hh(inhalation, hhspills, hhfires, hhetc.) hhis hhfound hhin hhthe: hh- hhAnswer
hhMaterial hhsafety hhdata hhsheet hh(MSDS) hhfor hhthe hhchemical
To hhwhat hhdoes hhGlobal hhWarming hhPotential hh(GWP) hhrefer? hh- hhAnswer hhRelative
hhability hhto hhproduce hhglobal hhwarming hheffect
When hhperforming hhengine hhpre-heat hhfor hhrefrigerant hhremoval, hhthe hhtechnician
hhshould hhdo hhALL hhof hhthe hhfollowing hhEXCEPT: hh- hhAnswer hhMake hhsure hhthe
hhcompressor hhis hhoperating
PAG hhlubricant: hh- hhAnswer hhIs hhhygroscopic hh(absorbs hhmoisture)
Electronic hhleak hhdetectors hhcertified hhto hhSAE hhJ2791 hhhave hhthe hhcapability hhof
hhidentifying hhleakage hhrates hhas hhlow hhas: hh- hhAnswer hhElectronic hhleak hhdetectors
hhcertified hhto hhSAE hhJ2791 hhhave hhthe hhcapability hhof hhidentifying hhleakage hhrates
hhas hhlow hhas:
When hhusing hhan hhHFC-134a hhrefrigerant hhrecovery hhmachine, hhafter hhcompleting
hhthe hhfirst hhrecovery hhprocess, hhhow hhlong hhmust hhyou hhwait, hhthen hhcheck hhthe
hhmachine's hhgauges hhfor hha hhrise hhin hhpressure hhabove hhvacuum, hhwhich hhwould
hhindicate hhthat hhthe hhsystem hhstill hhcontains hhsome hhrefrigerant? hh- hhAnswer hh5
hhminutes
A/C hhsystem hhservice hhequipment hhhoses hhmust hhbe hhequipped hhwith hhshutoff
hhvalves hhlocated hhwithin hh_______ hhfrom hhthe hh"vehicle hhend" hhof hhthe hhhoses. hh-
hhAnswer hh12 hhinches
To hhwhat hhdoes hhOzone hhDepletion hhPotential hh(ODP) hhrefer? hh- hhAnswer hhRelative
hhability hhto hhdestroy hhozone
Which hhtype hhof hhtank hhmust hhbe hhused hhduring hhthe hhtransfer hhof hhrefrigerant? hh-
hhAnswer hhTanks hhmarked hhDOT hh4BA
When hhcan hhHFC-134a hhbecome hhcombustible hhin hha hhmobile hhair hhconditioning
hhsystem? hh- hhAnswer hhIf hhshop hhair hhis hhused hhin hhthe hhsystem hhin hhan hhattempt
hhto hhcheck hhfor hhleaks hhand hhHFC-134a hhis hhpresent
Mineral-based hhlubricants hhare hhused hhin hhwhich hhtype hhof hhmobile hhA/C hhsystem?
hh- hhAnswer hhCFC-12
How hhmuch hhmoisture hhis hhremoved hhfrom hha hhmobile hhA/C hhsystem hhduring hha
hhtypical hhevacuation? hh- hhAnswer hhPossibly hhnone
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