Which of the following is not a violation of refrigerant management regulations under the
clean air act?
: Servicing a system that uses CFCs or HCFCs after the phase of those
refrigerant
Which of the following refrigerants has the lowest global warming potential?
: R-600a
How does the globa...
1 | P a g e EPA TEST SC Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grad e A+ Which of the following is not a violation of refrigerant management regulations under the clean air act? 🗸🗸🗸 : Servicing a system that uses CFCs or HCFCs after the phase of those refrigerant Which of the following refrigerants has the lowest global warming potential? 🗸🗸🗸 : R-600a How does the global warming potential of R410A compare to carbon dioxide? 🗸🗸🗸 : It is thousands of times greater How does the global warming potentials of isobutane (R -600a), propane (R-290), and R-441A compare to the GWPs of HFC -134a, R -404A, and R -410A? 🗸🗸🗸 : They are significantly lower What is the state of refrigerant entering the compressor of a refrigeration system? 2 | P a g e 🗸🗸🗸 : Low pressure vapor/Superheated vapor Which Type of l ubricants are HFO refrigerants miscible in? 🗸🗸🗸 : POE lubricants What characteristic(s) of CFCs and HCFCs make them more likely to reach the stratosphere than most other compounds containing chlorine? 🗸🗸🗸 : They do not dissolve in water or easily brea k down in the atmosphere What does ozone depletion potential (or 'ODP') measure? 🗸🗸🗸 : The ability of a substance to destroy ozone in the stratosphere What characteristics of HFC refrigerants make them damaging to the environment? 🗸🗸🗸 : They can have very high global warming potentials Which of the following refrigerants contains chlorine? 🗸🗸🗸 : R-22 When working with an appliance containing HCFCs or HFCs, which of the following does NOT require a person to be a Section 608 ce rtified technician? 🗸🗸🗸 : Rewiring an external electric circuit 3 | P a g e A major system repair is being performed on an R -22 appliance. What CANNOT be done to recharge the appliance? 🗸🗸🗸 : Top off the unit with R -410A I'm which of the following scenarios can refrigerant be vented? 🗸🗸🗸 : Releasing isobutane from a household freezer What range is displayed on a high pressure gauge on a service manifold? a. 500 microns to 0 pis b. 0 to 200 psi c. 0 to 800 psi d. 250 psi to 750 psi 🗸🗸🗸 : C. 0 to 800 psi Why do EPA regulations require appliances to have a service aperture or process stub. a. To make it easier to recover refrigerant. b. To check for open motor windings. c. To vent non -condensibles. d. To dehydrate the system oil. 🗸🗸🗸 : A. To make it easier to recover refrigerant
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