EPA Certification Exam Latest 2023/2024 100% Correct Answers

EPA Certification Exam An ----- should be taken and ----- if a system has a major component failure. - ANSWER oil sample analyzed (evacuation) The system vacuum gauge should be connected ----- from the vacuum pump. - ANSWER far as possible To receive any certification, which section must be passed? - ANSWER Section A (core) Always review the -----, when working with any solvents, chemicals, or refrigerants - ANSWER material safety data sheets Cylinders should be transported in an ----- position - ANSWER upright What MUST be placed on a refrigerant cylinder being returned for reclaiming. - ANSWER A refrigerant label. Use of a reciever and accumulator depends on - ANSWER system design and/or on the type of metering device used. What regulation (and what start date) requires all persons be certified in proper refrigerant handling techniques? - ANSWER Section 608 of the Federal Clean Act as of November 14, 1994. What happens when CFC or HCFC molecules get in the stratosphere & free atoms of Chlorine are set free? - ANSWER These atoms attack Ozone Molecules causing the formation of Chlorine Monoxide (CLO), after colliding with another Ozone Molecule, causes 2 Oxygen (O2) molecules to be made & leaving an atom of chlorine to act as "Free Agent" starting the process over until 100,000 molecules of Ozone are destroyed by just one atom of chloride. This is a closed book exam. What items may be brought with you to take the test? - ANSWER A temperature/pressure chart and a calculator To recycle is to... - ANSWER clean refrigerant for reuse by separating the oil from the refrigerant and removing any moisture by passing it through one or more filter driers. Should relief valves be installed in series? - ANSWER Never Recover only ---- type of refrigerant into a recovery cylinder. - ANSWER one What is one of the most important tools to the HVACR technician? - ANSWER The gauge manifold set Long hoses will cause excessive -----, increased -----, and have a potential for -----. - ANSWER pressure drop recovery time increased emissions What are the two basic types of recovery devices? - ANSWER Self-Contained and System-Dependent. Section II of the test covers what topics? - ANSWER topics pertaining to high-pressure appliances Why in large quantities, do refrigerants cause suffocation? - ANSWER Because they are heavier than air and displace oxygen What are 6 Type II appliances? - ANSWER 1.Walk-in coolers 2.Walk-in freezers 3.Reach-in refrigerators 4.Reach-in freezers 5.Residential & Commercial comfort cooling systems 6.Ice machines To justify the cost increases of service to a customer, simply explain that ----- and required ---- to recover refrigerants in order to ----- and -----. - ANSWER you are bound by law protect the environment human health Once the general area of the leak is located the use of ----- will pinpoint the leak. - ANSWER soap bubbles The most efficient method of leak checking a charged low-pressure system is to use? - ANSWER Controlled hot water or heater blankets. It is important to remember that when leak testing an R-134A system, use -----. - ANSWER pressurized nitrogen. Can Recycled refrigerant be resold? - ANSWER It cannot be re-sold but it can be re-used. Universal technicians are certified to - ANSWER maintain, service or repair both low and high pressure equipment as well as small appliances What are the 2 basic types of recovery devices? - ANSWER System dependent Self contained Violation. Falsify or fail to keep ----- - ANSWER proper records EPA regulations require a ----- or ----- on all appliances that use a Class I or II refrigerant in order to make it easier to recover refrigerant. - ANSWER service aperture process stub It is the responsibility of the ----- in the disposal chain to ensure that ----- has been removed from ---- before ----. - ANSWER final person'refrigerant appliances scrapping CFC's will not dissolve in - ANSWER Water or breakdown, no rain out What are the three "R's"? - ANSWER Recover, Recycle, and Reclaim. There is no drop-in substitute for -----, but ----- can be used in most of these systems if proper ----- are followed. - ANSWER CFC R-12 R-134A retrofil procedures What is an Azeotrope? - ANSWER A mixture of two or more liquids in such a ratio that it's composition cannot be changed by vaporizing it. Disposable cylinders are used only with ----- and may never be used for -----. - ANSWER virgin refrigerant recovery Which agency regulates section 608 of the Federal Clean Air Act? - ANSWER The United States Environmental Protection Agency (EPA) When handling and filling refrigerant cylinders, or operating recovery or recycling equipment, you should (3) ----- - ANSWER wear safety glasses, protective gloves, and follow all equipment manufacturers safety precautions.