Epa 608 Universal Practice Exam Test

Epa 608 Universal Practice Exam Test Refrigeration technicians who violate the Clean Air Act can: - - CORRECT ANSWERLose 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: - - CORRECT ANSWER-recovery and recycling. Refrigerant that is recovered can be returned to: - - CORRECT ANSWER-the same system or other systems owned by the same person without restriction. Refrigerant can not be called "reclaimed" unless it: - . - CORRECT 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: - - CORRECT 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? - - CORRECT 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: - - CORRECT ANSWER-the vacuum indicator shows you have reached and held the required finished vacuum. Disposable refrigerant containers are used for ______ - CORRECT ANSWER-virgin refrigerant Which refrigerant is an HCFC? - - CORRECT ANSWER-R-123, R-124, R-22 What statement is true about an azeotropic refrigerant mixture? - - CORRECT 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? - - CORRECT ANSWER-It is a mixture that acts like a singlecomponent refrigerant over its entire range. To scrap a disposable cylinder, the internal cylinder pressure should be reduced to at least: - - CORRECT ANSWER-0 psig.