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✔✔
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Thebright. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
