Exam (elaborations) Epa

_______ is the process of removing refrigerant in any condition from a system and storing it in an external container without necessarily testing or processing it in any way. - Recovering - ans^ ______________refers to the process of cleaning refrigerant by oil separation and single or multiple passes through filter-driers, which reduce moisture and acidity? - Recycling - ans^ _________is the process that returns refrigerant to new-product specifications and that requires chemical analysis? - Reclaim - ans^ "Self-contained" recovery devices: - can capture liquid and/or vapor refrigerant without the assistance of components in the air-conditioning or refrigeration equipment. - ans^ A compound pressure gauge, typically used on the low side of the system, measures pressure in: - psig and inches of mercury - ans^ A cylinder with a gray body and a yellow top indicates that the cylinder is designed to hold: - recovered refrigerant - ans^ A hermetic compressor must never be operated when: - there is a dehydration vacuum in the system. - ans^ A refillable refrigerant cylinder must never be filled to more than_________ of its capacity by weight: - 80% - ans^ A system is considered dehydrated when: - - ans^the vacuum indicator shows you have reached and held the required finished vacuum. A system is dehydrated to: - remove water and water vapor. - ans^ A ternary refrigerant blend is a _______ part mixture. - three-part - ans^ According to ASHRAE's 1992 refrigerant safety classification which of the following designations would be the most safe? - A-1 - ans^ According to EPA regulations, which of the following is procedures is NOT an approved technique for system cleanup after a burnout? - flushing with liquid refrigerant to clean tubing - ans^ According to the EPA, a_______ leak detection method is considered to be the most effective for locating the general area of a small leak. - electronic or ultrasonic tester - ans^ According to the EPA, an oil sample should be taken for which of the following reasons? - They system had a leak or a major component failure. - ans^ According to the EPA, of the refrigerants liked below, which types of refrigerants will not contribute to Global Warming? - CFCs HCFCs HFCs all contribute to Global Warming - ans^ According to the EPA, when dealing with customer complaints regarding additional costs due to refrigerant recovery efforts, the technician should: - explain the refrigerant recovery is necessary to protect human health and the environment; explain that refrigerant recovery is required by the Federal(and in some cases state and local)laws; inform the customer that professional service personnel are duty bound to follow the law and to protect the environment - ans^ After 1995, any supplies of CFC refrigerants to service existing units in the USA can only come from: - - ans^recovery and recycling. After refrigerant liquid transfer between recovery unit and the system being emptied, you need to avoid trapping: - liquid refrigerant between service valves. - ans^ All devices used for a refrigerant recovery must: - Meet EPA standards - ans^ All recovery equipment currently being made is required to have: - an EPA approved certification label. - ans^ 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 - ans^ An example of a HFC refrigerant is: - R-134a - ans^ An example of a HFC refrigerant is: - R-410A - ans^ An example of an HCFC is: - R-22 - ans^ An example of an HFC refrigerant is: - R-134a - ans^ An example of an HFC refrigerant is: - R-410A - ans^ Before you dispose of any system containing a refrigerant, you must: - recover the refrigerant. - ans^ Blended refrigerants leak from a system: - - ans^in uneven amounts due to different vapor pressures. CFC refrigerants are so named because they contain the elements: - Chlorine, fluorine, carbon - ans^ CFCs will no longer be manufactured or imported into the United States after: - 1995 - ans^ Chlorofluorocarbos (CFCs) and hydrochlorofluoroc