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epa 608 universal exam with answers.
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epa 608 universal exam with answers.
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epa 608 universal exam with answersRefrigeration |technicians |who |violate |the |Clean |Air |Act |can: |- |- |ANSWERS✔✔
|Lose |their |EPA |certification, |be |fined, |be |required |to |appear |in |Federal |court.
After |1995, |any |supplies |of |CFC |refrigerants |to |service |existing |units |in |the
|USA |can |only |come |from: |- |- |ANSWERS✔✔ |recovery |and |recycling.
Refrigerant |that |is |recovered |can |be |returned |to: |- |- |ANSWERS✔✔ |the |same
|system |or |other |systems |owned |by |the |same |person |without |restriction.
Refrigerant |can |not |be |called |"reclaimed" |unless |it: |- |. |- |ANSWERS✔✔ |has
|been |chemically |analyzed |and |the |refrigerant |meets |the |ARI-700 |standard.
The |EPA |can |require |a |technician |to |demonstrate |their |ability |to |perform
|proper |procedures |for |recovering |and/or |recycling |refrigerant. |Failure |to
|demonstrate |competency |can |result |in: |- |- |ANSWERS✔✔ |revocation |of |the
|technicians |certification.
What |characteristic(s) |of |CFCs |make |them |more |likely |to |reach |the
|stratosphere |than |most |other |compounds |containing |chlorine? |- |-
|ANSWERS✔✔ |Refrigerants |that |contain |chlorine |but |not |hydrogen |are |so
|stable |that |they |do |not |break |down |in |the |lower |atmosphere |after |being
|released. |The |chlorine |or |bromine |reacts |with |the |ozone, |causing |it |to |change
|back |to |oxygen, |thus |destroying |the |ozone |layer.
A |system |is |considered |dehydrated |when: |- |- |ANSWERS✔✔ |the |vacuum
|indicator |shows |you |have |reached |and |held |the |required |finished |vacuum.
Disposable |refrigerant |containers |are |used |for |______ |- |ANSWERS✔✔ |virgin
|refrigerant
,Which |refrigerant |is |an |HCFC? |- |- |ANSWERS✔✔ |R-123, |R-124, |R-22
What |statement |is |true |about |an |azeotropic |refrigerant |mixture? |- |-
|ANSWERS✔✔ |It |is |a |mixture |that |acts |like |a |single-component |refrigerant
|over |its |entire |range.
Chlorofluorocarbos |(CFCs) |and |hydrochlorofluorocarbons |(HCFCs) |have |which
|of |the |following |in |common? |- |- |ANSWERS✔✔ |It |is |a |mixture |that |acts |like |a
|single-component |refrigerant |over |its |entire |range.
To |scrap |a |disposable |cylinder, |the |internal |cylinder |pressure |should |be
|reduced |to |at |least: |- |- |ANSWERS✔✔ |0 |psig.
Manifold |gauge |sets |are |often |color |coded, |when |this |is |done, |the |high
|pressure |gauge |is |color |coded: |- |Red. |- |ANSWERS✔✔ |
In |general, |blended |refrigerants |should |be |charged: |- |- |ANSWERS✔✔ |as |a
|liquid.
Blended |refrigerants |leak |from |a |system: |- |- |ANSWERS✔✔ |in |uneven |amounts
|due |to |different |vapor |pressures.
Which |of |the |following |gases |help |form |the |earth's |protective |shield? |-
|Stratospheric |Ozone |- |ANSWERS✔✔ |
In |a |refrigerant |system, |the |device |that |changes |a |low |pressure |vapor |to |a
|high |pressure |vapor |is |the: |- |compressor. |- |ANSWERS✔✔ |
Data |shows |that |chlorine |in |the |stratosphere |comes |mainly |from |CFCs |rather
|than |from |natural |sources |such |as |volcanoes |because: |- |The |rise |in |the
, |amount |of |chlorine |in |the |stratosphere |matches |the |rise |in |the |amount |of
|fluorine, |which |has |different |natural |sources |than |chlorine; |The |rise |in |the
|amount |of |chlorine |in |the |stratosphere |matches |the |rise |in |CFC |emissions;
|Air |samples |taken |from |the |stratosphere |over |erupting |volcanoes |show |that
|volcanoes |contribute |a |small |quantity |of |chlorine |to |the |stratosphere |when
|compared |to |CFCs; |- |ANSWERS✔✔ |
Which |atom |of |the |CFC |molecule |causes |ozone |depletion? |- |chlorine |-
|ANSWERS✔✔ |
The |ozone |layer |protects |the |earth |from: |- |ultraviolet |radiation |from |the |sun. |-
|ANSWERS✔✔ |
When |using |with |any |solvent, |cleaner, |chemical |or |refrigerant, |you |should
|review: |- |material |safety |data |sheets. |- |ANSWERS✔✔ |
An |award |of |up |to |what |amount |may |be |paid |to |a |person |supplying
|information |that |leads |to |a |penalty |against |a |technician |who |is |intentionally
|venting? |- |10,000 |- |ANSWERS✔✔ |
The |Montreal |Protocol |is: |- |a |treaty |among |nations |that |controls |production |of
|CFCs |and |HCFCs. |- |ANSWERS✔✔ |
Which |refrigerant |is |an |HCFC? |- |R-123, |R-22, |R-124 |- |ANSWERS✔✔ |
What |is |one |of |the |most |serious |results |of |damage |to |the |ozone |layer? |-
|increases |in |human |skin |cancer |- |ANSWERS✔✔ |
Of |the |refrigerants |listed |below, |which |has |the |lowest |ozone |depletion
|potential |(ODP)? |- |R-22 |- |ANSWERS✔✔ |
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