EPA Type 2 Exam 2024

EPA Type 2 Exam 2024 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? - Answer ️️ -Repair leaks within 30 days from the date the leak was discovered What should be done before transferring refrigerant to an empty cylinder? - Answer ️️ -The cylinder should be evacuated Which of the following is an indicator of a leak in a high-pressure system with a capillary tube - Answer ️️ -Excessive superheat / Traces of oil are an indication of a refrigerant leak Why do gauge set hoses used for field service work have self-sealing connectors or hand valves - Answer ️️ -Minimize refrigerant release when hoses are connected and disconnected Recovered refrigerant may contain which of the following impurities? - Answer ️️ -Acids, Moisture, Oils When can appliances containing refrigerants be recovered to atmospheric pressure? - Answer ️️ -When leaks in the appliance make evacuation to the prescribed level unattainable. It is best practice to use dry nitrogen to break the vacuum when dehydrating by the triple evacuation method. However, it; - Answer ️️ -Can be dangerous if not used with a pressure regulator. When should refrigerant be removed from the condenser outlet? - Answer ️️ -Below the receiver When a trace gas becomes absolutely necessary, which of the available gases should be used to help locate a leak? - Answer ️️ -Nitrogen with a trace amount of the systems design refrigerant What should be done after reaching the required recovery vacuum on an appliance? - Answer ️️ -Wait for a few minutes to see if the system pressure rises indicating that there is still refrigerant in liquid form or in the oil