EPA 608 CORE 2018

1. What is being done in the U.S. to stop damage to the stratospheric ozone layer?

2. How much can a technician be fined for venting a non-exempt refrigerant from a system?

3. What is a violation of the Clean Air Act or EPA's regulations?

4. State and local governments __________________.

5. The ___________ program identifies alternative refrigerants for use.

6. The Montreal Protocol is ________________________.

7. The production and import of new R-22 in the U.S. to service existing systems is banned beginning in ________.

8. After a refrigerant is phased-out, supplies of that refrigerant for equipment servicing can only come from __________________.

9. Technicians who violate Clean Air Act provisions __________________.

10. Which is a violation of EPA or Clean Air Act regulations?

11. Reclaimed refrigerant must be tested to meet __________________ before it can be resold.

12. If technicians lose their certification card, they must_________________.

13. Distributors must verify __________________ before they can sell refrigerant.

14. What does NOT require Section 608 certification?

15. What refrigerant servicing does NOT require Section 608 certification?

16. Which of the following is a lawful use of HCFC-22?

17. When servicing an R-22 system you CANNOT _______.

18. How should disposable cylinders be discarded?

19. Before disposing of any appliance containing refrigerant __________________.

20. The EPA's "safe disposal requirements" make the __________________ responsible for ensuring that all refrigerant has been removed from household refrigerators before they are disposed.

21. All CFC, HCFC, and HFC refrigerant recovery devices must _________________.

22. Which appliances are NOT covered by EPA regulations?

23. A "self-contained" recovery device ________________.

24. EPA regulations require appliances to have ___________.

25. A ________________ recovery device uses the compressor in the appliance and/or the pressure of the refrigerant in the appliance.

26. When disposing of an appliance with 5-50 pounds of refrigerant, you must record_______________.

27. What happens when EPA regulations change after a technician is certified?

28. What does a Section 608 certification allow a technician to do?

29. What action violates the EPA's prohibition on venting?

30. All refrigerants _________________.

31. During servicing of any refrigeration system, the refrigerant must be______________.

32. Which refrigerant(s) must be recovered __________________.

33. Which of the following is illegal?

34. The release of any CFC, HCFC, or HFC refrigerant during ______________ is illegal.

35. Why is venting an "exempt refrigerant" legal?

36. Which refrigerant release is allowable by the EPA because the refrigerant is "exempt."

37. Which action is a violation of the prohibition on venting refrigerants?

38. Which of the following refrigerants has the lowest global warming potential?

39. What gas is used as the baseline measurement for GWP?

40. Which type of refrigerant typically has the lowest global warming potential?

41. How does the GWP of R-410A compare to carbon dioxide?

42. How does the GWP of R-441A compare to the GWPs of R-410A?

43. What are the characteristics of hydrofluoroolefins and hydrocarbon refrigerants?

44. What makes HFC refrigerants damaging to the environment?

45. _____________ refrigerants have the highest ODP.

46. _____________ refrigerants are the most harmful to stratospheric ozone.

47. An example of an HCFC refrigerant is:

48. _____________________ refrigerant has an ODP that is greater than 1.

49. ______________ contains chlorine.

50. HCFC refrigerants are made up of ___________________.

51. _________________ has the lowest ODP.

52. ________________damages stratospheric ozone.

53. Which refrigerant depletes the ozone layer?

54. Ozone contains ______________.

55. What is one of the most serious results of loss of the stratospheric ozone layer?

56. Which health effect increases from loss of the stratospheric ozone layer?

57. A reduction in stratospheric ozone causes _______________.

58. Which of the following proves that HCFCs are in the stratosphere?

59. How do scientists know that the chlorine in the stratosphere is not primarily from volcanoes?

60. Ozone depletion is caused by ______________ in HCFC refrigerants.

61. CFCs and HCFCs _____________making them capable of reaching the stratospheric ozone layer.

62. According to the Roland-Molina theory, _________ are destroyed by each chlorine atom in the stratosphere.

63. Which of the following gases help form the earth's protective shield?

64. Ozone depletion in the stratosphere is what type of problem?

65. The ability of a substance to destroy ozone in the stratosphere is referred to as ___________________.

66. The stratospheric ozone layer protects us from ___________________.

67. _________________ the speed of evacuation.

68. Over-evacuation of a system can ___________________.

69. A system is evacuated ___________________.

70. Dehydrating means to remove ______________.

71. EPA regulations only allow recovered or recycled refrigerant to be _________________.

72. _____________________ the speed of dehydration.

73. When measuring a vacuum of the system, the vacuum gauge should be connected ________.

74. The capacity of a vacuum pump and its suction line size affect ___________.

75. Service hoses used for system evacuation _________________.

76. The service hose between the system and the vacuum pump should _______.

77. A system is considered dehydrated when ________________________.

78. You heat a system during dehydration ____________________

79. Always measure the final system vacuum __________________.

80. Which of the following refrigerants has the lowest global warming potential?

81. What gas is used as the baseline measurement for GWP?

82. Which type of refrigerant typically has the lowest global warming potential?

83. How does the GWP of R-410A compare to carbon dioxide?

84. How does the GWP of R-441A compare to the GWPs of R-410A?

85. What are the characteristics of hydrofluoroolefins and hydrocarbon refrigerants?

86. What makes HFC refrigerants damaging to the environment?

87. The EPA considers _________________the most effective for locating the general area of a small leak.

88. Which gas would cause the least damage when used for leak checking?

89. If a system cannot maintain a vacuum, the system ______________.

90. After proper R-410A refrigerant recovery, you should use _______________ to leak check the system.

91. If R-410A was added to an R-22 system, _______________.

92. Low ambient temperatures _____________ recovery time.

93. Long hoses between the unit and the recovery machine_______________.

94. Never mix different refrigerants in the same container because ___________.

95. _________________ can be recovered into the same cylinder.

96. All new recovery equipment must __________________________.

97. Under normal conditions, refrigerant enters the compressor of a refrigeration system as a_______.

98. Which refrigerant is considered a high-pressure refrigerant?

99. Which refrigerant is considered a low-pressure refrigerant?

100. _________________ make(s) HFO refrigerants less flammable than HC refrigerants.

101. Which refrigerants is an HFO?

102. HFC refrigerants contain ________________________.

103. Which refrigerant contains chlorine?

104. Which refrigerant is an HFC?

105. Which of the following statements is true?

106. Why are flammable HFO refrigerants classified as A2L and not A2?

107. HFO refrigerants are miscible in_________________ lubricants?

108. Which of the following synthetic lubricants is used with ternary refrigerant blends containing HCFCs?

109. A ternary blend refrigerant is a ______________.

110. Which is NOT a "refrigerant" as it is used in EPA's regulations?

111. The EPA refers to a "retrofit" as ________________________.

112. Which refrigerant release is illegal?

113. Which refrigerant can be purchased if you don't have EPA's Section 608 certification?

114. All non-azeotropic refrigerants should be charged as ______________.

115. Non-azeotropic refrigerants leak from a system ____________.

116. Azeotropic refrigerant mixtures ______________________.

117. Hygroscopic oils ________________.

118. ________________ is the only EPA SNAP approved 'drop-in' replacement for R-22.

119. Which synthetic oil is commonly used with HFC refrigerants?

120. Ester-based oils like POE can be mixed with _____________.

121. ______________________ means that the refrigerant blend has a range of bubble or dew points at a constant pressure.

122. A compound pressure gauge measures pressure in____________.

123. When a system is operating, the ________________ changes the refrigerant from a high-pressure vapor to a high-pressure liquid?

124. An oil sample might be taken when ___________________.

125. The pressure range that is typically displayed on a high-pressure manifold gauge is ______.

126. When a system is operating, the __________________ changes a low-pressure vapor to a high-pressure vapor.

127. Never operate a hermetic compressor when the system _____________.

128. EPA recommends this service practice to conserve refrigerant.

129. An oil sample should be taken for which of the following reasons?

130. Which is recommended after a burnout?

131. Which refrigerant can fractionate?

132. When a system using POE oil has been opened, what is the minimum evacuation level that should be achieved and held before charging the system?

133. When a system is operating, refrigerant leaves the condenser as a ______________.

134. If the compressor crankcase is the coldest part of the system, refrigerant will migrate to the compressor because of the difference in ________________________ in the system.

135. When a system is operating, refrigerant enters the compressor of a refrigeration system as a ______.

136. The high-pressure gauge on a typical gauge manifold set is typically colored______________.

137. What provides the cooling in a vapor compression refrigeration system?

138. When a system is operating, refrigerant enters the expansion device as a _______________

139. The center port on a three-port manifold used to ______________________.

140. The low-pressure gauge on a typical gauge manifold set is colored ________.

141. _______________ is cleaning the refrigerant for immediate reuse by oil separation and single or multiple passes through devices, like replaceable core filter driers.

142. ______________ returns refrigerant to new product specifications and requires chemical analysis to verify the purity to AHRI-700 standards.

143. ____________________ is the removal of refrigerant from a system and storing it in a container without testing or processing it in any way.

144. Refrigerant cylinders should _____________.

145. Never fill a refillable refrigerant cylinder beyond _________________.

146. A refrigerant cylinder that has a gray body and a yellow top is designed to hold ______________.

147. Before recycling or discarding, a disposable cylinder should be __________.

148. Approved refrigerant recovery cylinders have ____________________.

149. The fill level of a recovery cylinder can be determined by _______________.

150. Never heat a recovery tank with an open flame because ________________.

151. Reusable refrigerant containers that store refrigerant at any pressure above 15 psig (at normal ambient temperature) must be hydrostatically tested every ______________.

152. ______________________, only containers designated "refillable" by DOT can be used for transporting recovered pressurized refrigerant.

153. Under the EPA's new regulations, when can disposable cylinders be used to recover refrigerant?

154. Recovery cylinders should never be overfilled because _________________.

155. Always ______________ when operating refrigerant recovery or recycling equipment.

156. According to the EPA, ______________ should be used to remove ice from a sight glass.

157. ______________ to verify the allowable machine test pressure.

158. Oxygen or compressed air should never be used to pressurize a system because ___________.

159. Non-toxic refrigerants can still cause death because ___________.

160. In refrigerant accidents where death occurs, the major cause is ___________.

161. Which additional safety precaution should be followed when using flammable refrigerants?

162. Use __________________ to determine a safe pressure for leak testing.

163. _________________can combine to cause a fire or explosion when working with flammable hydrocarbon refrigerants.

164. When planning to recovery flammable refrigerants, always ensure ________.

165. A flammable refrigerant can only burn or explode if the refrigerant concentration is ________.

166. In there is a large release of refrigerant in a contained area, ______________.

167. Which of the following is NOT classified as an A3 refrigerant?

168. Which of the following is classified as an A2L refrigerant?

169. A system containing a flammable refrigerant must have the process tubes marked with a ________color.

170. A system containing a flammable refrigerant must have the process tubes or service connection marked with a color marking that extends a minimum of ___________ in both directions.

171. When using a nitrogen cylinder ___________.

172. When transferring liquid in service hoses, you should guard against trapping ____________.

173. Before working with any unknown solvents, chemicals, or refrigerants, always review the ______.

174. Refrigerant vapors should never be inhaled because they _______________.

175. When using nitrogen, _________________.

176. If corrosion is discovered in the body of a relief valve, the valve must be__________.

177. Which ASHRAE refrigerant safety classification is the safest?

178. The Department of Transportation (DOT) requires ____________________ when transporting cylinders containing used refrigerant.

179. DOT regulations require the ____________ to be recorded on the shipping paper for hazard class 2.2 Nonflammable Compressed Gases.

180. Recovery cylinders are labeled to indicate the refrigerant inside to ________.

181. When shipping refrigerant cylinders, they should be stored ______________.

182. A refrigerant label is placed on the _____________________.

183. Before recharging any flammable hydrocarbon or HFO refrigerant, always ______________.

184. Which material is NOT compatible with any HFO refrigerant?

185. In addition to the saturation pressure-temperature behavior of two refrigerants, when considering a substitute refrigerant, also consider _______.

186. Before shipping any recovered refrigerant, you must _________________.

187. Portable refillable tanks must meet ________________ standards.

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