UPDATED EPA 608 QUIZLET (2024) FINAL EXAM |100% CORRECT|

UPDATED EPA 608 QUIZLET (202 4) FINAL EXAM | 100% CORRECT | the state of the refrigerant entering the metering device is? *Ans* A subcooled high pressure liquid. what type of refrigerant is used in VERY high -pressure appliances? *Ans* R-503 what type of refrigerant is used in MEDIUM pressure appliances? *Ans* R-500 what type of refrigerant is used in HIGH pressure appliances? *Ans* R-410A and R -22 what device is located at the END of the liquid line? *Ans* The expansion device. what type of refrigerants are the LEAST harmful to the ozone layer? *Ans* HFC refrigerants. How much money does the EPA offer to individuals who report information about others who vent refrigerants into the atmosphere? *Ans* $10,000. which class of refrigerants does R -22 fall into? *Ans* The HCFC class. (hydrochloroflurocarbons) which gas should be used when checking for leaks in various systems? *Ans* Nitrogen. which term describes the process of changing a refrigerant from a liquid to a gas using HEAT? *Ans* Latent heat. refrigerants in the SUCTION line are in what phase and state? *Ans* Cold vapor. how many miles above the Earth's surface does the ozone layer in the stratosphere extend? *Ans* 31 miles. what year was the Montreal Protocol put in place? *Ans* 1989. refrigerant recovery equipment should be checked for (blank) on a daily basis? *Ans* Refrigerant leaks and oil levels. should recovery machines be used on equipment that contains hydrogen? *Ans* NO. which purity test is used to determine the type of refrigerant? *Ans* ARI 700. what type of unit only requires ONE service connection? *Ans* self-contained recovery units. air will cause (blank) discharge pressures in a refrigeration system. *Ans* Higher. a strong odor is around during the recovery process. what is most likely the cause of this? *Ans* A compressor burnout. what is the best way (position) to transport refrigeration cylinders? *Ans* Upright. you can only accurately read refrigerant pressure with a stable (blank)? *Ans* Temperature. an explosion can occur if (blank) is vented in an enclosed environment? *Ans* Hydrogen. can refrigerants be mixed in a recovery tank? *Ans* NO. what is the state of refrigerant leaving the liquid receiver? *Ans* High pressure liquid. what is the minimum microns a vacuum pump must pull when evacuating a system? *Ans* 500 microns. what is usually contained in refrigerants made before 1950? *Ans* SO2. (sulfur dioxide)