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Exam (elaborations)

609 ESCO QUESTIONS AND CORRECT VERIFIED ANSWERS

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609 ESCO QUESTIONS AND CORRECT VERIFIED ANSWERS

Institution
MACS
Course
MACS

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609 ESCO QUESTIONS AND CORRECT
VERIFIED ANSWERS
WhoA2MustA2BeA2Certified?
A2AnyA2personA2thatA2servicesA2MotorA2VehicleA2AirA2ConditioningA2(MVAC)A2mustA2beA2c
ertified.A2ServicingA2ofA2motorA2vehicleA2airA2conditioningA2includesA2repairs,A2leakA2testin
g,A2andA2"toppingA2off"A2ofA2airA2conditioningA2systemsA2lowA2onA2refrigerant,A2asA2wellA2a
sA2anyA2otherA2repairA2toA2theA2vehicleA2thatA2requiresA2dismantlingA2anyA2partA2ofA2theA2ai
rA2conditioner.A2NOTE:A2ServiceA2performedA2onA2HCFC-
22A2airA2conditionerA2systemsA2typicallyA2foundA2onA2busses,A2isA2NOTA2coveredA2underA2
sectionA2609,A2butA2ratherA2sectionA2608A2ofA2theA2CleanA2AirA2Act.A2TechnicianA2certificat
ionA2ISA2requiredA2underA2sectionA2608.A2ForA2moreA2informationA2onA2SectionA2608A2certi
fication,A2contactA2TheA2ESCOA2InstituteA2atA2(800)A2726-
9696.A2TestA2FormatA2TheA2certificationA2testA2containsA250A2multiple-
choiceA2questions.A2AllA2ofA2theA2informationA2necessaryA2forA2theA2technicianA2toA2achiev
eA2aA2passingA2scoreA2onA2theA2certificationA2testA2isA2containedA2withinA2thisA2manual.A2T
heA2certificationA2testA2willA2containA2aA2varietyA2ofA2quA2-A2Ans--fristA2page

StratosphericA2OzoneA2DepletionA2DuringA2theA2lastA2100A2years,A2refrigerantsA2suchA2as;
A2CFCs,A2HCFCs,A2HFCs,A2andA2HFOsA2haveA2dramaticallyA2changedA2ourA2lifestyles.A2L
ittleA2didA2weA2knowA2thatA2theA2useA2andA2releaseA2ofA2theseA2compoundsA2intoA2theA2at
mosphereA2wouldA2haveA2devastatingA2effectsA2onA2theA2Earth'sA2environment.A2OneA2ofA
2theseA2effectsA2isA2farA2removedA2fromA2theA2Earth'sA2surface,A2inA2theA2Stratosphere.A2L
ocatedA2betweenA27A2andA230A2milesA2aboveA2theA2Earth'sA2surface,A2theA2StratosphereA2
containsA2theA2OzoneA2layer.A2TheA2OzoneA2layerA2isA2theA2earth'sA2securityA2blanket.A2T
heA2OzoneA2layerA2servesA2twoA2importantA2functions.A2OzoneA2protectsA2usA2fromA2harm
fulA2UltraA2VioletA2RadiationA2andA2helpsA2toA2maintainA2stableA2EarthA2temperatures.A2De
pletionA2ofA2OzoneA2inA2theA2StratosphereA2causes:A2IncreasedA2eyeA2diseaseA2SkinA2can
cerA2CropA2lossA2DeforestationA2ReducedA2marineA2lifeA2IncreasedA2groundA2levelA2ozon
eA2AnA2OzoneA2moleculeA2consistsA2ofA2threeA2oxygenA2atomsA2(O3).A2WhenA2CFC'sA2ar
eA2releasedA2intoA2theA2atmosphere,A2tA2-A2Ans--2ndA2page

MontrealA2ProtocolA2TheA2MontrealA2ProtocolA2isA2anA2internationalA2agreementA2(treaty)A
2regulatingA2theA2productionA2andA2useA2ofA2CFC's,A2HCFC's,A2halons,A2methylA2chlorofor
m,A2andA2carbonA2tetrachlorideA2enteredA2intoA2forceA2inA2midA21989.A2ThisA2landmarkA2a
greementA2initiallyA2calledA2forA2aA2productionA2andA2consumptionA2freeze.A2ItA2currentlyA2
callsA2forA2aA2stepwiseA2reductionA2andA2eventualA2productionA2phaseA2outA2ofA2variousA2
ozoneA2depletingA2substances.A2TheA2productionA2phase-
outA2ofA2CFC'sA2wasA2completedA2onA2DecemberA231,A21995.A2AtA2present,A2HFC-
134aA2isA2usedA2byA2mostA2newA2carA2manufacturersA2asA2aA2replacementA2forA2CFC-
12A2andA2olderA2vehiclesA2mayA2beA2convertedA2toA2useA2HFC-
134aA2byA2followingA2properA2retrofitA2procedures.A2AlthoughA2HFC-
134aA2isA2consideredA2ozoneA2friendly,A2itA2isA2notA2withoutA2environmentalA2impact.A2ItA2
hasA2beenA2foundA2toA2beA2aA2greenhouseA2gasA2andA2contributesA2toA2theA2problemsA2of
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