EPA 608 Universal Exam Questions And Answers

EPA 608 Universal Exam Questions And Answers 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. Refrigerants can not be called "reclaimed" unless it: - . - ANS 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: - - ANS revocation of the technicians 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 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: - - 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. Chlorofluorocarbos (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. To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: - - ANS 0 psig.