EPA Certification Exam 2023/2024

Which Refrigerants contain the most chlorine? - ANSWER CFC's As of what date did it become unlawful to intentionally release Class 1 and Class 2 refrigerants to the atmosphere? - ANSWER July 1, 1992 Which Refrigerants have the lowest zone depletion potential? - ANSWER HFC's The molecule found in CFC's and HCHC's refrigerants that destroys the ozone in the stratosphere is: - ANSWER Chlorine Stratospheric ozone consists of: - ANSWER Three oxygen atoms Stratospheric ozone depletion is a _________ problem: - ANSWER Global The Gas in the stratosphere that protects us from ultraviolet radiation is: - ANSWER Ozone Which refrigerant is a CFC? - ANSWER R-12 Which refrigerant is an HCFC? - ANSWER R-123 & R-22 Which refrigerant is an HFC? - ANSWER R-134a Which refrigerant contains no chlorine? - ANSWER R-134a The Molecule found in the stratosphere that indicates stratospheric ozone depletion is taking place is: - ANSWER Chlorine monoxide The following actions would violate the clean air act (CAA): - ANSWER Knowingly releasing Class 1 Class 2 substances failing to keep or falsifying required records failing to tech the required evacuation levels before opening a systems to the atmosphere for service One time (disposable) refrigerant cylinders are used for: - ANSWER Virgin refrigerant The rule of thumb for refilling approved cylinders is a maximum of _____ percent liquid? - ANSWER 80% The time it takes to properly evacuate and dehydrate a system prior to charging with refrigerant is determined by the: - ANSWER Total volume of the system Amount of non-condensibles (moisture) in the system Ambient Temperature A system that fails to hold a vacuum after the evacuation process: - ANSWER May contain moisture May have a leak To recover refrigerant is to: - ANSWER Remove refrigerant is any condition from a system in either an active or passive manner, and store it in an external container without necessarily testing or processing. The process that reduces contaminate in used refrigerant by oil separation with single and multiple passes through devices such as replaceable filter core driers, which reduces moisture, acidity, and particulate matter is: - ANSWER Recycling The synthetic lubricant used with HCFC-based ternary blends is: - ANSWER Alkyl benzene R-134a is "drop-in" refrigerant for: - ANSWER R-134a is not a Drop-in refrigerant The refrigerant condition and state entering the condenser of an air conditioner is a: - ANSWER Superheated Vapor The condition and state entering the condenser of an air conditioner is a: - ANSWER Subcooled liquid The component of an air conditioning system that changes a low pressure vapor to a high pressure vapor is the: - ANSWER Compressor Refrigerant cylinders should be shipped - ANSWER In the vertical upright position For the maintenance, service or repair of small appliances, recovery equipment manufactured after ________ must be certified by an EPA approved organization? - ANSWER November 15, 1993 Which best describes the definition of Type 1 "small appliance" as defined by EPA? - ANSWER Systems manufactured, charged and hermetically sealed with five (5) pounds or less of refrigerant