Hfos - Study guides, Class notes & Summaries

Who Must Be Certified? Any person that services Motor Vehicle Air Conditioning (MVAC) must be certified. Servicing of motor vehicle air conditioning includes repairs, leak testing, and "topping off" of air conditioning systems low on refrigerant, as well as any other repair to the vehicle that requires dismantling any part of the air conditioner. NOTE: Service performed on HCFC-22 air conditioner systems typically found on busses, is NOT covered under section 609, but rather section 608 of the C...

ASE AC 609 Question and answers 2023Ozone Depletion Potential - correct answers chemical rating that ranges from 0.01-1.0 and that refers to the amount of ozone depletion caused by a substance compared to CFC-11 (eg HCFC-22 depletes .034 of the ozone where CFC-11 would deplete 1.0) class 1 substance - correct answers ozone depleting chemical with an ozone depletion potential greater than .2 (eg CFCs)HCFCs - correct answers Hydrochlorofluorocarbons, eg R-22 (HCFC-22) HFCs - correct...

EPA SECTION 608 CORE (2019 revision) Questions and Answers Latest Version 100% Solved What does ozone in the stratosphere above the earth consist of? a. Molecules containing 2 oxygen atoms. b. Molecules containing 3 oxygen atoms. c. Molecules containing 4 oxygen atoms. d. Molecules containing 5 oxygen atoms ️️b. Molecules containing 3 oxygen atoms. Which of the following refrigerants has the lowest global warming potential? a. R-134a b. R-407C c. R-410A d. R-600a ️️d. R-600a...

EPA 608 Exam Test Questions With Revised Correct Answers BEST UPDATED COMBINED SET!! The molecule found in CFCs and HCFCs that depletes ozone is - ANSWER Chlorine A single chlorine atom can destroy how many ozone molecules - ANSWER 100,000 Silicone elastomers, for use in seals and gaskets, are not compatible with which refrigerants - ANSWER HFOs Reusable refrigerant containers under high-pressure must be hydrostatically tested how often - ANSWER 5 years ...

What does ozone in the stratosphere above the earth consist of? a. Molecules containing 2 oxygen atoms b. Molecules containing 3 oxygen atoms c. Molecules containing 4 oxygen atoms d. Molecules containing 5 oxygen atoms - b. Molecules containing 3 oxygen atoms Which of the following refrigerants has the lowest global warming potential? a. R-134a b. R-407C c. R-410A d. R-600a - d. R-600a Which of the following gases is used as the baseline measurement for global warming potentia...

EPA SECTION 608 CORE (2021-2022 revision) A disposable cylinder should be reduced to what pressure before scrapping? a. 0 psig b. 20 psig c. 50 psig d. 80 psig A major system repair is being performed on a R-22 appliance. What CANNOT be done to recharge the appliance? a. Add R-22 after the repair is complete. b. Retrofit the unit to R-407C. c. Use recovered or recycled R-22 from the same owner. d. Top off the unit with R-410a. A refillable cylinder must not be filled above what ...

ODP Test Questions and Answers Already Passed What innovative materials are being explored to replace CFCs in refrigeration? Researchers are exploring hydrofluoroolefins (HFOs) and natural refrigerants like CO2 and ammonia. How does public awareness impact ozone layer conservation efforts? Public awareness leads to increased demand for eco-friendly products, encouraging industries to adopt sustainable practices. What unusual impact can ozone depletion have on agriculture? Ozone ...

EPA 608 CORE EXAM TESTS COMBINED | VERIFIED TEST QUESTIONS WITH CORRECT SOLUTIONS Where is the stratosphere? - ANSWER 10 to 30 miles Where is ozone located? - ANSWER stratosphere What does ozone in the stratosphere above the earth consist of? a. Molecules containing 2 oxygen atoms b. Molecules containing 3 oxygen atoms c. Molecules containing 4 oxygen atoms d. Molecules containing 5 oxygen atoms - ANSWER b. Molecules containing 3 oxygen atoms Which of the following refrigerants ha...

What is the Ozone Layer? What is the difference between ozone in the stratosphere and on the ground level? Ozone in the stratosphere between 7 and 28 miles above earth. On the ground level ozone is a harmful pollutant, in the stratosphere it is a protective shield. What is ODP? Ozone Depletion Potential It is the ability of a substance to destroy ozone in the stratosphere What is GWP? Global Warming Potential. The GWP of a refrigerant is its global warming impact rel...

technicians maintaining, servicing, repairing, or disposing of low-pressure appliances must be certified as: - ANSWER Type III or Universal Technician the owner &/or operator of the equipment is responsible for keeping: - ANSWER records including: leak inspections & any completed leak repair verification tests it's the _______ &/or ___________ responsibility to obtain service records from the servicing company doing any work on an appliancem - ANSWER owner &/ or operator as of 11/14/94...

EPA 608 CORE EXAM TESTS COMBINED | VERIFIED TEST QUESTIONS WITH CORRECT SOLUTIONS Where is the stratosphere? - ANSWER 10 to 30 miles Where is ozone located? - ANSWER stratosphere What does ozone in the stratosphere above the earth consist of? a. Molecules containing 2 oxygen atoms b. Molecules containing 3 oxygen atoms c. Molecules containing 4 oxygen atoms d. Molecules containing 5 oxygen atoms - ANSWER b. Molecules containing 3 oxygen atoms Which of the following refrigerants ha...