Type II, EPA 608 certification 2026

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Progress: 24% (23/94)

Learning progress ?

1. Which of the following always falls under the EPA definition for "major maintenance, service, or repair?"Not learned 2. Recovering refrigerant from a system in the vapor phase will minimize the loss of which of the following?Not learned 3. After system servicing, and recharging, why is refrigerant vapor reintroduced to the chiller before refrigerant liquid?Not learned 4. In the event of a large release of CFC, HCFC, or HFC refrigerant in a contained area which of the following is true?Not learned 5. A comfort-cooling appliance containing 50 pounds or more of R-22 is found to be leaking beyond the applicable leak rate threshold. Unless granted additional time, how many days do you have to repair the leak and conduct the initial leak verification test?Not learned 6. What are refrigeration and air-conditioning compressor heaters used for?Not learned 7. What is a characteristic of a refrigerant oil that is hygroscopic?Not learned 8. An appliance normally containing more than 50 pounds of R-22 refrigerant was found to have a 35% annual leak rate. After the repair, how many successful verification tests are required?Not learned 9. Which of the following should be replaced if a system is opened for servicing?Not learned 10. What must a system owner do, once the threshold leak rate has been exceeded on any low-pressure system using an ozone depleting refrigerant?Not learned 11. When could a reciprocating compressor be damaged if energized?Not learned 12. Why could a recycling or recovery machine that uses a hermetic compressor overheat when drawing deep vacuums?Not learned 13. Recovered refrigerant may contain which of the following impurities?Not learned 14. After installation of a field piped split system, the unit should first be pressurized with:Not learned 15. Which of the following is an indicator of a leak in a high-pressure system with a capillary tube?Not learned 16. Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from an R-410A unit. What must be done before recovery?Not learned 17. Which condition can cause excessive pressure on the high side of a self-contained (active) recovery device?Not learned 18. After refrigerant liquid has been recovered from the appliance, any remaining vapor is.Not learned 19. What gas should be used to leak check a system designed for use with R-410A that has been opened for a major system repair?Not learned 20. A customer has an industrial process refrigeration system that contains 1000 lbs. of R-22 that has exceeded the applicable leak rate threshold. How often is the customer required to perform a leak inspection?Not learned 21. When first inspecting a hermetic system known to be leaking, you should look for:Not learned 22. A crankcase heater is often used to prevent refrigerant from mixing with compressor oil during periods of:Not learned 23. Refrigerant should be recovered from the condenser outlet if the condenser is;Not learned 24. A new split system should be checked for leaks by;Not learned 25. When using a recovery unit on a system containing 100 lbs. of R-410A it must be evacuated to;Not learned 26. What can be done with a refrigerant trace gas and nitrogen mixture after a system leak is found?Not learned 27. If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be;Not learned 28. Non-condensables will cause;Not learned 29. A comfort cooling system that contains 50 pounds or more of R-410A is leaking. What will be the new maximum allowable annual leak rate starting in 2019?Not learned 30. Refrigerants CFC-12, HCFC-22, and HFC-134a are all classified as Type _______ substances.Not learned 31. What must the equipment owners/operators include in recovered refrigerant records for equipment with refrigerant charges that range from 5 to 50 pounds?Not learned 32. When recovering refrigerant from a medium-pressure system with more than 200 lbs. of refrigerant, recover to a level of;Not learned 33. A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant must be evacuated (recovered) to a level of;Not learned 34. A high-pressure appliance containing 210 lbs. of R-407C refrigerant must be evacuated (recovered) to a level of;Not learned 35. Proper recovery techniques begin with the use of appropriate recovery equipment that has been certified by;Not learned 36. EPA regulations require that all Industrial Process Refrigeration (IPR) systems containing more than 50 pounds of refrigerant MUST be repaired when the annual leak rate exceeds;Not learned 37. Leaks must be repaired on industrial process and refrigeration units with a 50-pound charge or greater when the annualized leak rate reaches _____ or more.Not learned 38. EPA regulations state that removal of which component constitutes a "major repair"?Not learned 39. When an appliance containing 50 pounds or more of a regulated refrigerant leaks refrigerant at an annual rate of 125% or more, what must be included on the leak inspections records?Not learned 40. A refrigerant sensor which will sound an alarm and automatically start a ventilation system in occupied equipment rooms falls under ASHRAE Standard;Not learned 41. Unless plans are made to replace a system with a leak rate that exceeds the maximum leak rate, repairs must be made within;Not learned 42. Which of the following refrigerants is classified as a very high-pressure refrigerant?Not learned 43. When dehydrating a system, it should be evacuated to a minimum level of;Not learned 44. What happens to a refrigerant that is heated above the saturation temperature?Not learned 45. All HVAC/R systems must be protected by a;Not learned 46. What conditions allow for a system to be opened and repaired without recovering the refrigerant to the required vacuum level?Not learned 47. Heat Pumps that use R-410A should be leak checked with:Not learned 48. Heat Pumps that have been retrofitted from R-22 to R-407C should be leak checked with:Not learned 49. To change the compressor on a system containing R-410A, you must isolate the compressor then:Not learned 50. The method to charge a system that has a normal charge of 80 pounds is to charge with:Not learned 51. After installation of a field-piped R-410A split heat pump, the unit should first be:Not learned 52. Pressure relief valves must not be:Not learned 53. When charging an R-12 refrigeration system that uses a water-cooled condenser, you must first charge with vapor to a pressure of at least _______, before switching to Liquid charging.Not learned 54. Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from a unit with R-410A. What must be done before your recovery unit can be used to recovery R-410A?Not learned 55. After reaching the required recovery vacuum on a system you must:Not learned 56. In a refrigeration system, the component directly following the evaporator is the:Not learned 57. A reciprocating compressor should not be energized whenNot learned 58. R-410A requires a high-pressure manifold gauge and hose set. They must have a:Not learned 59. The refrigerant pressure inside an R-410A unit which is at room temperature (72F) and not operating is:Not learned 60. Every air conditioning or refrigerating system should be protected by a:Not learned 61. To change the compressor on a system containing 40 pounds R-500, using a recycling machine that was manufactured AFTER November 15, 1993, you must isolate the compressor then:Not learned 62. When inspecting a system for leaks, you should look for:Not learned 63. When a new system has been assembled, the first thing to do is:Not learned 64. R-410A is different from other ASHRAE 400 series non- azeotropic blends because:Not learned 65. Manifold gauge set hoses should have self-sealing connectors or hand valves to:Not learned 66. When using recovery or recycling equipment that was manufactured AFTER November 15, 1993: you must evacuate a system containing MORE than 200 pounds of CFC-12 to _________ before making a major repair:Not learned 67. With an air-cooled condenser on the roof of a building and the evaporator on the first floor, recovery should first occur:Not learned 68. Never use oxygen or compressed air to leak-check hardware because R-410A can:Not learned 69. Dry nitrogen should be used to break the first vacuum when dehydrating by the double evacuation method. However, it:Not learned 70. A Recovery machine that uses a hermetic compressor will overheat when drawing a deep vacuum because:Not learned 71. The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to use a remove the charge from the cylinder as a:Not learned 72. When a refrigerant trace gas becomes absolutely necessary, which of the available refrigerants should be used to identify a leak?Not learned 73. After refrigerant liquid has been recovered from a system, any remaining vapor is:Not learned 74. An oil sample should be taken when ___________________Not learned 75. In a refrigeration system with a TXV (or other type of throttling device), the component directly following the condenser is the:Not learned 76. Recovered refrigerant may contain which of the following?Not learned 77. The backseating of a suction shutoff valve will close the:Not learned 78. Which repair would ALWAYS be considered "major" under EPA's regulations?Not learned 79. R-410A requires certified recovery and recycling machines rated for at least:Not learned 80. A compressor heater is used to:Not learned 81. Your recovery/recycling machine has R-502 refrigerant in it. You now have to recover refrigerant from a unit with R-22. What must be done before the R-22 refrigerant can be recovered/recycled?Not learned 82. The fastest way to recover refrigerant from a system is to remove it in the __________ phase?Not learned 83. Before using a recovery unit to remove a charge, what steps should be taken?Not learned 84. A deep vacuum is usually measured in:Not learned 85. Before transferring refrigerant to an empty cylinder?Not learned 86. To recover liquid refrigerant, you must connect one hose to the:Not learned 87. A system can be evacuated to only atmospheric pressure when:Not learned 88. The vacuum pump used to evacuate a system should be capable of pulling a vacuum of:Not learned 89. While R-410A is a high-pressure refrigerant, it can be stored in the back of your service van as long as:Not learned 90. When under a deep vacuum, the motor winding of a hermetic refrigeration compressor:Not learned 91. Which statement is NOT true about recycling and recovery equipment manufactured after November 15, 1993?Not learned 92. When a unit is opened for servicing, the ____________should always be replaced.Not learned 93. When servicing an operating unit that has a receiver/storage tank, the:Not learned 94. Use __________ to remove ice from a sight glass.Not learned 95. The refrigerant pressure inside an R-12 unit which is at room temperature (72F) and not operating is:Not learned 96. You are going to service a newer residential split system air conditioner. You would expect to find the system charged with which refrigerant?Not learned 97. A routine maintenance task which must be performed on refrigerant recycling machines is to _________.Not learned 98. Refrigerant should be removed from the condenser outlet if the:Not learned 99. When evacuating a system, the use of a large vacuum pump could:Not learned 100. On refrigeration units that use an open compressor; the ________________ is most likely to leak if the unit is not used for several months.Not learned 101. The primary water source for cooling the condenser of a water-cooled recovery unit is:Not learned 102. When using recovery and recycling equipment manufactured BEFORE November 15, 1993, technicians must evacuate a unit that has a normal charge of 10 pounds of CFC-500 to ___________ before disposing of the system.Not learned 103. The evaporation temperature of R- 410A at 100 psig is about:Not learned 104. Non-condensables in a system cause a:Not learned 105. When charging an R-410A system that uses a water-cooled condenser, you must first charge with vapor to a pressure of at least _______, before switching to liquid charging.Not learned 106. R-410A requires recovery tanks rated for at least:Not learned 107. The recovery rate can be increased by:Not learned 108. Oil foaming usually occurs in the ________.Not learned 109. During the evacuation of a system that contains large amounts of moisture it may be necessary to increase pressure in the system with ________, to counteract the freezing of the moisture.Not learned 110. Prior to replacing the condenser coil in a high pressure system, the refrigerant was recovered and stored in a refillable cylinder. The refrigerant:Not learned 111. The evaporation temperature of R-134a at 0 psig is:Not learned 112. When servicing a 60-ton packaged rooftop unit. The easiest way to check the type of refrigerant it uses is to:Not learned 113. The 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 114. The EPA regulations require that leaking commercial or industrial process refrigeration equipment must be repaired when the leak rate exceeds ______ of the charge per year.Not learned 115. You are going to service an older residential split system air conditioner. You would expect to find the system charged with which refrigerant?Not learned 116. For what refrigerant(s) is an equipment room refrigerant monitor required under ASHRAE Standard 15?Not learned 117. Heat Pumps that use R-134a should be leak checked with:Not learned 118. On a high-pressure system _________ is an indicator of a possible leak.Not learned 119. System-dependent recovery equipment CANNOT be used when:Not learned 120. Moisture is removed from a system by:Not learned 121. Which component is NOT part of the low side of the system?Not learned 122. Soap bubble testing is used:Not learned 123. Refrigerant leaves the receiver of a system as a:Not learned 124. The recovery of refrigerant from a system as a vapor only will minimize the loss of:Not learned