EPA 608 UNIVERSAL EXAM - 100 ACTUAL EXAM

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EPA 608 UNIVERSAL EXAM -/ 100 ACTUAL EXAM

QUESTIONS WITH CORRECT DETAILED ANSWERS (VERIFIED)

GRADED A+

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: - - ANS - revocation of the technician’s certification.

What characteristic(s) of CFCs make them more likely to reach the stratosphere than most other compounds containing chlorine? - - ANS - Refrigerants that contain chlorine but not hydrogen is 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: - - ANS - the vacuum indicator shows you have reached and held the required finished vacuum.

Disposable refrigerant containers are used for ______ - ANS - virgin refrigerant

Which refrigerant is an HCFC? - - ANS - R-123, R-124, R-22

What statement is true about an azeotropic refrigerant mixture? - - ANS - It is a mixture that acts like a single-component refrigerant over its entire range.

Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) have which of the following in common? - - ANS - It is a mixture that acts like a single-component refrigerant over its entire range.

According to the EPA, an oil sample should be taken for which of the following reasons? - ANS - - They system had a leak or a major component failure. 1 / 2

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The EPA requires the installation of a service aperture or process stub on all appliances using a class I or class II substance as a refrigerant. The main purpose of this requirement is to make it easier to: - ANS - - recover refrigerant.

Recycling and recovery equipment intended for use with air-conditioning and refrigeration equipment

(except for small appliances) must be tested under: - ANS - - ARI 740

Refrigerant entering the compressor of a refrigeration system is a: -- ANS - superheated vapor.

What is being done in the U.S. to stop damage to the stratospheric ozone layer? - ANS - - capturing and ultimately eliminating use of chlorofluorocarbons.

They type of oil that is most commonly used in stationary refrigeration applications with HFC-134a

refrigerant is: -- ANS - ester oil.

To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: - - ANS - 0 pig.

Refrigeration technicians who violate the Clean Air Act can: - - ANS - 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: - - ANS - recovery and recycling.

Refrigerant that is recovered can be returned to: - - ANS - the same system or other systems owned by the same person without restriction.

Refrigerant cannot be called "reclaimed" unless it: -. - ANS - has been chemically analyzed and the refrigerant meets the ARI-700 standard.

Manifold gauge sets are often color coded, when this is done, the high-pressure gauge is color coded: - - ANS - Red.

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