UPDATED EPA 608 QUIZLET (2023-2024) LATEST EXAM QUESTIONS & ANSWERS GRADED A+, Exams of Community Health

Download UPDATED EPA 608 QUIZLET (2023-2024) LATEST EXAM QUESTIONS & ANSWERS GRADED A+ and more Exams Community Health in PDF only on Docsity! UPDATED EPA 608 QUIZLET (2023-2024) LATEST EXAM QUESTIONS & ANSWERS GRADED A+ 1. The state of the refrigerant entering the metering device is? - Correct answer a sub cooled high pressure liquid. 2. What type of refrigerant is used in VERY high-pressure appliances? - Correct answer R-503 3. What type of refrigerant is used in MEDIUM pressure appliances? - Correct answer R-500 4. What type of refrigerant is used in HIGH pressure appliances? - Correct answer R-410A and R-22 5. What device is located at the END of the liquid line? - Correct answer the expansion device. 6. What type of refrigerants are the LEAST harmful to the ozone layer? - Correct answer HFC refrigerants. 7. How much money does the EPA offer to individuals who report information about others who vent refrigerants into the atmosphere? - Correct answer $10,000. 8. Which class of refrigerants does R-22 fall into? - Correct answer The HCFC class. (Hydrochloroflurocarbons) Page 1 of 20 9. Which gas should be used when checking for leaks in various systems? - Correct answer Nitrogen. 10.Which term describes the process of changing a refrigerant from a liquid to a gas using HEAT? - Correct answer Latent heat. 11.Refrigerants in the SUCTION line are in what phase and state? - Correct answer Cold vapor. 12.How many miles above the Earth's surface does the ozone layer in the stratosphere extend? - Correct answer 31 miles. 13.What year was the Montreal Protocol put in place? - Correct answer 1989. 14.Refrigerant recovery equipment should be checked for (blank) on a daily basis? - Correct answer Refrigerant leaks and oil levels. 15.Should recovery machines be used on equipment that contains hydrogen? - Correct answer NO. 16.Which purity test is used to determine the type of refrigerant? - Correct answer ARI 700. 17.What type of unit only requires ONE service connection? - Correct answer self- contained recovery units. Page 2 of 20 37.When using a system-dependent recovery system with an operating compressor, where should the refrigerant be recovered from? - Correct answer High side of the system. 38.When using a system-dependent recovery system with a non-operating compressor, where should the refrigerant be recovered from? - Correct answer both high and low side. 39.How can you release trapped refrigerants in the oil during recovery? - Correct answer Heat and tap the compressor with a mallet. 40.When should piercing type valves be used and what is a common problem of these valves? - Correct answer Fitting tend to leak over time and should not be left on appliances. 41.When was it established that it was a violation to vent CFCs or HCFCs? - Correct answer July 1st, 1992. 42.When was it required for recovery/recycling equipment to be certified and labeled by the EPA? - Correct answer November 15th, 1993. 43.When was it established that you needed a certification to service, maintain, or dispose of appliances with refrigerants? This is the same date when the sale of CFCs and HCFCs were restricted to certified technicians only. - Correct answer November 14th, 1994. 44.When did it become a violation to vent HFCs? - Correct answer November 15th, 1995. Page 5 of 20 45.When CFCs were no longer produced? - Correct answer December 31st, 1995. 46.Section 608 of the Federal Clean Air Act requires technicians to what? - Correct answer Recover all refrigerants. 47.The objective of the clean air act is to protect what? - Correct answer the earth's stratosphere. 48.What does HFC (refrigerant) stand for? - Correct answer Hydro 49.Fluor 50.Carbons. 51.Hydro fluorocarbons. 52.What does CFC (refrigerant) stand for? - Correct answer Chloral 53.Fluor 54.Carbons. 55.Chlorofluorocarbons. 56.What does ODP stand for? - Correct answer Ozone Depletion Potential. 57.Which international treaty agreement was the basis for section 608? - Correct answer The Montreal Protocol. Page 6 of 20 58.Depletion of the ozone is known to cause what 6 things? - Correct answer Crop loss. 59. Increased eye disease. 60.Skin cancer. 61.Deforestation. 62.Reduced marine life. 63. Increased ground level ozone. 64.What date were CFCs phased out? - Correct answer December 31st, 1995. 65.What is EPA 608 type I certification? - Correct answer Persons who maintain, service, repair, or dispose of small appliances (containing 5 pounds of refrigerant (or less). 66.What is EPA 608 Type II certification? - Correct answer Persons who maintain, service, repair, or dispose of high and very high pressure appliances. Except small appliances and motor vehicle air conditioning systems. 67.What is EPA 608 Type III certification? - Correct answer Persons who maintain, service, repair, or dispose of low pressure appliances. 68.What is EPA 608 Universal certification? - Correct answer Persons who maintain, service, repair, or dispose of both low and high pressure equipment, as well as appliances. Page 7 of 20 90.Safety shoes. 91.Butyl-lined protective gloves. 92.After the refrigerant has been recovered, what can be used to flush the system? - Correct answer Nitrogen. 93.Applying heat, with a heat gun, to the compressor, does what? - Correct answer can help vaporize any trapped liquid refrigerant during recovery. 94.What can cause high recovery discharge pressures? - Correct answer not opening the tank inlet valve / having excess air will cause higher discharge pressures 95.Small appliances are equipped with a straight piece of tubing (process stub) that is used for what reason? - Correct answer as the installation location for a piercing-type access valve. 96.What might happen if a cylinder containing mixed refrigerant is given to a reclamation center? - Correct answer Refuse to process the refrigerant and return it at the owner's expense / they may destroy the refrigerant, but charge a substantial fee. 97.Technicians who perform sealed-system service on small appliances must have what level of certification? - Correct answer Type I or Universal certification. 98.What must be done before disposing of a small appliance containing R-12? - Correct answer Recover the refrigerant. Page 10 of 20 99.What should you do when pressurizing a system with nitrogen? - Correct answer Charge through a pressure regulator and install a relief valve in the line downstream from the pressure regulator. 100. CFCs will not be manufactured in the United States after what year? - Correct answer 1995. 101. What is a common problem of piercing type valves? - Correct answer Fittings tend to leak over time and should not be left on appliances. 102. Can you release (vent) vapor from the top of a graduated charging cylinder? - Correct answer it can NOT be vented, always recovered. 103. What is a small appliance according to the EPA? - Correct answer Systems manufactured, charged and hermetically sealed with (5) pounds or less of refrigerant. 104. What criteria must recovery equipment meet if manufactured after November 15, 1993? - Correct answer must meet stringent vacuum standards. 105. Certified by an EPA laboratory. 106. Equipped with low-loss fittings. 107. What are the leak repair requirements for comfort cooling appliances and commercial appliances containing 50 lbs. or more of refrigerant? - Correct answer must be repaired if leak rate exceeds 15% in comfort cooling appliances. 108. Must be repaired if leak rate exceeds 35% in all commercial and industrial process refrigeration. Page 11 of 20 109. Under what circumstances can recovered refrigerant be reused? - Correct answer Refrigerant may be returned to the appliance from which it was removed or to another appliance owned by the same person without being recycled or reclaimed. 110. What are considered "major" repairs according to the EPA? - Correct answer Removal of the Compressor. 111. Condenser. 112. Evaporator. 113. Or an auxiliary heat exchanger coil. 114. What common contaminants can be found in the oils? - Correct answer Moisture. 115. Acids. 116. What ways can you visually look for leaks? - Correct answer Excessive superheat, caused by low refrigerant charge. 117. Looking for traces of oil. 118. Using soap bubbles. 119. EPA regulations state that removal of which component constitutes a "major repair"? - Correct answer Compressor. 120. When dehydrating a system, it should be evacuated to a minimum level of (blank) microns? - Correct answer 500. Page 12 of 20 141. The state of the refrigerant leaving the liquid receiver of a refrigeration system is what? - Correct answer High-pressure liquid. 142. Can a hermetic compressor be operated when the system is in a deep vacuum? - Correct answer NO. 143. All refrigeration recovery cylinders must be (blank) approved. - Correct answer DOT. 144. R-11, R-12, R-113, R-114, R-115 are all what kind of refrigerants? - Correct answer CFC. 145. R-125, R-134A, R-23, R-32, R-125, R-143a, R-152A are all what kind of refrigerants? - Correct answer HFC. 146. R-22, R-123, R-124, R-1426 are all what kind of refrigerants? - Correct answer HCFC. 147. The compound gauge of the manifold that measures low pressure (psig) and vacuum (inches Hg.) is what color? - Correct answer Blue. 148. The high pressure gauge of the manifold that measures the high side (discharge) pressure is what color? - Correct answer Red. Page 15 of 20 149. The center port of the manifold that can be connected to a recovery device, evacuation vacuum pump, or charging device is what color? - Correct answer Yellow. 150. HFC's will be phased out by what year? - Correct answer 2020. 151. What does GWP stand for? - Correct answer Global Warming Potential. 152. What does ARI stand for? - Correct answer Air Conditioning and Refrigeration Institute. 153. What does System Dependent (passive) recovery equipment mean? - Correct answer using the assistance of components in the appliance for recovery. 154. What does Self Contained (active) recovery equipment mean? - Correct answer using equipment's own compressor for recovery. 155. Fastest method to recover refrigerant is when it is in what state? - Correct answer Liquid state. 156. The slowest method to recover refrigerant is when it is in what state? - Correct answer Vapor state. 157. What does PSIA stand for? - Correct answer Pounds per square inch gauge. Page 16 of 20 158. When did it become illegal to vent HCFCs or CFCs? - Correct answer July 1st, 1992. 159. Recovery equipment before November 15th, 1993, must remove (blank) % of Refrigerant? (Or 4 inches of vacuum) - Correct answer 80%. 160. Recovery equipment after November 15th, 1993, must remove (blank) % of Refrigerant? (Or 4 inches of vacuum) - Correct answer 90%. 161. R-11 is what type of refrigerant? - Correct answer CFC. 162. R-134a is what type of refrigerant? - Correct answer HFC. 163. ODP is a measurement of CFCs and HCFCs ability to do what? - Correct answer Destroy/Deplete the ozone. 164. Technicians servicing small appliances must be certified in refrigerant recovery if they do what? - Correct answer Perform sealed system service. 165. All equipment must be equipped with what type of fittings? - Correct answer Low-loss fittings. 166. What is the EPA requirement for leak repair for small appliances? - Correct answer Leaks should be repaired whenever possible. Page 17 of 20