Epa 608 universal Exam Questions With
Correct Answers
Refrigeration technicians who violate the Clean Air Act can: - - answer✔✔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: - - answer✔✔recovery and recycling.
Refrigerant that is recovered can be returned to: - - answer✔✔the same system or other systems
owned by the same person without restriction.
Refrigerant can not be called "reclaimed" unless it: - . - answer✔✔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: - -
answer✔✔revocation of the technicians certification.
What characteristic(s) of CFCs make them more likely to reach the stratosphere than most other
compounds containing chlorine? - - answer✔✔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: - - answer✔✔the vacuum indicator shows you have
reached and held the required finished vacuum.
Disposable refrigerant containers are used for ______ - answer✔✔virgin refrigerant
Which refrigerant is an HCFC? - - answer✔✔R-123, R-124, R-22
What statement is true about an azeotropic refrigerant mixture? - - answer✔✔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? - - answer✔✔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: - -
answer✔✔0 psig.
Manifold gauge sets are often color coded, when this is done, the high pressure gauge is color
coded: - Red. - answer✔✔
In general, blended refrigerants should be charged: - - answer✔✔as a liquid.
Blended refrigerants leak from a system: - - answer✔✔in uneven amounts due to different vapor
pressures.
Which of the following gases help form the earth's protective shield? - Stratospheric Ozone -
answer✔✔
In a refrigerant system, the device that changes a low pressure vapor to a high pressure vapor is
the: - compressor. - answer✔✔
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; - answer✔✔
Which atom of the CFC molecule causes ozone depletion? - chlorine - answer✔✔
The ozone layer protects the earth from: - ultraviolet radiation from the sun. - answer✔✔
When using with any solvent, cleaner, chemical or refrigerant, you should review: - material
safety data sheets. - answer✔✔
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 - answer✔✔
The Montreal Protocol is: - a treaty among nations that controls production of CFCs and HCFCs.
- answer✔✔
Which refrigerant is an HCFC? - R-123, R-22, R-124 - answer✔✔
What is one of the most serious results of damage to the ozone layer? - increases in human skin
cancer - answer✔✔
Of the refrigerants listed below, which has the lowest ozone depletion potential (ODP)? - R-22 -
answer✔✔
Voordelen van het kopen van samenvattingen bij Stuvia op een rij:
√ Verzekerd van kwaliteit door reviews
Stuvia-klanten hebben meer dan 700.000 samenvattingen beoordeeld. Zo weet je zeker dat je de beste documenten koopt!
Snel en makkelijk kopen
Je betaalt supersnel en eenmalig met iDeal, Bancontact of creditcard voor de samenvatting. Zonder lidmaatschap.
Focus op de essentie
Samenvattingen worden geschreven voor en door anderen. Daarom zijn de samenvattingen altijd betrouwbaar en actueel. Zo kom je snel tot de kern!
Veelgestelde vragen
Wat krijg ik als ik dit document koop?
Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.
Tevredenheidsgarantie: hoe werkt dat?
Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.
Van wie koop ik deze samenvatting?
Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper Thebright. Stuvia faciliteert de betaling aan de verkoper.
Zit ik meteen vast aan een abonnement?
Nee, je koopt alleen deze samenvatting voor €11,15. Je zit daarna nergens aan vast.
