Type III, EPA 608 certification 2026

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Progress: 24% (23/94)

Learning progress ?

1. Where would you place a leak detector probe to check gas leaks into the water box with water removed?Not learned 2. Which of the following indicates air in a low-pressure system?Not learned 3. A hydrostatic tube test kit will:Not learned 4. When leak testing a low-pressure centrifugal chiller with nitrogen, what is the maximum test pressure?Not learned 5. A rupture disc on a recovery vessel for low-pressure refrigerants relieves at:Not learned 6. On low-pressure chillers, moisture most frequently enters the refrigerant system through:Not learned 7. Excessive running of a purge system on a low-pressure chiller generally indicates what condition?Not learned 8. Pressure relief valves can only be installed:Not learned 9. Where should the discharge from a rupture disc be piped for venting?Not learned 10. What is the primary purpose of a purge unit on a low-pressure chiller?Not learned 11. A company uses a chiller that diverts 55% of its cooling capacity to one of its manufacturing lines and 45% of its cooling capacity to air condition the office spaces. Which leak rate category would this chiller be in?Not learned 12. Starting in 2019, what is the leak rate threshold for commercial refrigeration equipment with a full charge of 50 or more pounds of an HCFC refrigerant?Not learned 13. Where does refrigerant go after it leaves the purge unit of a low-pressure centrifugal system?Not learned 14. To determine if the system is leaking more than the allowable rate, the EPA allows the use of which one of the following methods to determine the full charge?Not learned 15. ASHRAE Standard 15-2013 requires the use of room sensors and alarms to detect:Not learned 16. Why do chillers using low-pressure refrigerants require purge units?Not learned 17. Why should the oil be removed from a low-pressure system at 130°F?Not learned 18. The EPA's leak repair requirements apply to appliances with a charge size ofNot learned 19. What is meant by the term "high efficiency purge unit?"Not learned 20. During evacuation with large amounts of moisture it may be necessary to increase pressure to counteract freezing with gas such as:Not learned 21. A typical setting for the high pressure cut-out control on a recovery unit used for evacuating the refrigerant from a low-pressure chiller is:Not learned 22. A chiller with a charge of 200 pounds of an ozone-depleting refrigerant has passed the initial verification leak test. When must a follow-up verification test be conducted?Not learned 23. Where is the rupture disc located on a centrifugal chiller?Not learned 24. Where is refrigerant added to a centrifugal machine?Not learned 25. After all the liquid has been removed from an average 350-ton, low-pressure appliance, approximately how much vapor refrigerant remains in the system?Not learned 26. A low-pressure chiller used for comfort cooling must be repaired if it has an annual leak rate of ____ of the total charge.Not learned 27. If a strong odor is detected during the recovery process,Not learned 28. Where is refrigerant added to a low-pressure system during the charging process?Not learned 29. When charging a low-pressure system, refrigerant should be introduced to the system as a vapor to raise the system's saturation temperature to a minimum of;Not learned 30. During evacuation of systems with large amounts of water, it may be necessary to;Not learned 31. Because a low-pressure system operates below atmospheric pressure (in a vacuum),Not learned 32. In a low-pressure chiller, air and other non-condensables collect at the;Not learned 33. The most efficient method of leak checking a charged low-pressure refrigeration unit is to;Not learned 34. The Standard for machine room safety is;Not learned 35. When installing more than one, pressure relief valves must be installed;Not learned 36. The EPA-required evacuation level for recovery or recycling equipment used on low-pressure systems isNot learned 37. When pressurizing a low-pressure system for leak-detection purposes, do not exceedNot learned 38. What type of equipment can be worked on with Type III certification?Not learned 39. How long would an equipment owner or operator have to retrofit or retire an appliance that has exceeded the threshold leak rate if the replacement appliance uses 50 pounds or more of an exempt refrigerant?Not learned 40. Which of the following best describes the refrigerant recovery process from an R-123 system?Not learned 41. What can be used to pressurize a chiller system before opening the system for a non-major repair?Not learned 42. The rupture disk on a low-pressure chiller has a burst pressure of;Not learned 43. Where is the purge unit located in a low-pressure system?Not learned 44. To repair a chiller operating with R-22, the technician;Not learned 45. Which of the following refrigerants has a safety classification of B-1Not learned 46. Which organization establishes the refrigerant safety group standard?Not learned 47. When leak testing a low-pressure chiller, the maximum pressure to use is;Not learned 48. The owner must keep records of refrigerant added to a low-pressure system during service and maintenance if the system charge is;Not learned 49. Under ASHRAE Standard 34, R-134a is classified as;Not learned 50. A typical setting for the high pressure cut-out control on a recovery unit used for evacuating the refrigerant from a low pressure chiller is:Not learned 51. A charged low pressure refrigeration system can be efficiently leak checked by:Not learned 52. The existence of air in a low pressure system, causes __________.Not learned 53. Which safety precaution should be adhered to for low pressure systems?Not learned 54. Refrigerant-11 at 14.7 PSIA will boil at about:Not learned 55. When there is excessive moisture collecting in the purge unit of a low pressure refrigeration system, this indicates that the __________.Not learned 56. ASHRAE Standard 15 - 1994 requires equipment room refrigerant sensors for what safety group classification?Not learned 57. When recharging a refrigeration system with R-11, what vapor pressure is necessary in the shells before charging with liquid?Not learned 58. After reaching the required recovery vacuum on a chiller, you should:Not learned 59. A hydrostatic tube test kit is used to:Not learned 60. When charging a chiller, refrigerant vapor is introduced into the system before charging with liquid. This is because:Not learned 61. When evacuating a system, the use of too large a vacuum pump can cause:Not learned 62. On a low-pressure chiller with an open-type compressor, the ________________ is very susceptible to leaks.Not learned 63. What steps may be taken to prevent air accumulation into an idle low pressure refrigeration system?Not learned 64. Commercial and industrial process refrigeration systems must be repaired when the leak rate exceeds ______ percent of the charge per year.Not learned 65. When recovering vapor from a low pressure refrigeration system the:Not learned 66. Where does refrigerant go after it leaves the purge unit of a low pressure centrifugal system?Not learned 67. The purge unit takes its suction from the:Not learned 68. Which of the following repairs would ALWAYS be considered "major" under EPA's regulations?Not learned 69. Charging refrigerant liquid into a refrigeration system when it is under a 29 inch Hg vacuum can cause the:Not learned 70. According to the EPA, there is approximately _______ refrigerant vapor left in an average 350 ton R- 11 chiller at 0 psig pressure once all the R-11 liquid has been removed?Not learned 71. An oil sample should be taken when __________________.Not learned 72. Both CFC-11 and HCFC-123 chillers require purge units because:Not learned 73. Refrigerant recovery typically starts with_______ because it is faster.Not learned 74. Under EPA's regulations, __________________ is used to pressurize a low-pressure chiller for the purpose of opening the system for a non-major repair?Not learned 75. The primary water source for a recovery unit condensing coil is ______.Not learned 76. Which statement is NOT true of recycling and recovery equipment manufactured after November 15, 1993?Not learned 77. A system does not have to be evacuated all the way to the required level when:Not learned 78. Which action listed below is the proper method to reduce refrigerant loss from a purge unit on a CFC-11 chiller?Not learned 79. Identify the pressure corresponding to 32F for R-123:Not learned 80. What precaution should be taken prior to recovering refrigerant from a chiller suspected of having tube leaksNot learned 81. Pressure relief valves must never be:Not learned 82. If you are going to removing oil from a low pressure system, you should heat the oil because:Not learned 83. After recovering the liquid refrigerant you must:Not learned 84. EPA regulations require that any appliances containing more than 50 pounds of refrigerant (except for commercial and industrial process refrigeration) must be repaired when the leak rate exceeds ______ of the charge per year.Not learned 85. If you are using a recovery machine manufactured BEFORE November 15, 1993, you must evacuate any low-pressure appliance to ________ before making a major repair:Not learned 86. On low pressure chillers, moisture typically enters the refrigerant system through:Not learned 87. Refrigerant-11 at a pressure of 17 inches Hg vacuum has a saturation temperature of:Not learned 88. The lowest access point on a low pressure centrifugal air-conditioning unit is the:Not learned 89. A rupture disc on a recovery vessel for low pressure refrigerants relieves at:Not learned 90. According to ASHRAE Guideline 3-1996, if the pressure in a system rises from 1 mm Hg to a level above ______ during a standing vacuum test, the system should be checked for leaks.Not learned 91. During chiller evacuation, water is circulated to:Not learned 92. When charging an R-410A water chiller, you must first charge with vapor to a pressure of at least _______, before switching to liquid charging.Not learned 93. If you leak test a low pressure chiller with nitrogen in excess of 10 psig you could cause the _____________ to fail.Not learned 94. ASHRAE Standard 15 - 1994 requires that each machinery room must activate an alarm and mechanical ventilation before refrigerant concentrations exceed:Not learned 95. Which repair WOULD NOT fall under the EPA definition for "MAJOR MAINTENANCE, SERVICE, OR REPAIR"?>Not learned 96. Refrigerant is added to a centrifugal machine through the:Not learned 97. What is meant by the term "high efficiency purge unit?"Not learned 98. The PRIMARY purpose of a purge unit on a CFC-11 chiller is to:Not learned 99. If you are using a recovery machine manufactured AFTER November 15, 1993, you must evacuate any low- pressure appliance to ________ before making a major repair:Not learned 100. If you suspect a leak in the water box of a chiller, you should place the leak detector probe ________________________, and sniff for refrigerants.Not learned 101. To determine how much vapor to charge into an evacuated chiller, you should charge with vapor until ____________________.Not learned 102. ASHRAE Standard 15 - 1994 requires the use of room sensors and alarms to detect:Not learned 103. The discharge from a rupture disc should be piped ____________ for venting?Not learned 104. A centrifugal chiller's rupture disk is connected to the chiller'sNot learned 105. To remove ice from sight glasses or viewing glasses, use:Not learned 106. The maximum test pressure for leak testing a low pressure centrifugal is:Not learned 107. According to ASHRAE Standard 34, what is the safety classification of R-123?Not learned 108. Excessive running of a purge system on a low pressure chiller generally indicates that the:Not learned 109. The typical design burst pressure for a rupture disk on a low pressure centrifugal air-conditioning system is set at ________,Not learned 110. During the evacuation of a system containing large amounts of moisture, you can prevent freezing of this moisture by increasing the pressure with _______ gas,Not learned