EPA 608 Certification Exam

EPA 608 Certification Exam with 100% Correct Answers updated What date was the sale of CFC's & HCFC's restricted to technicians certified in refrigerant recovery? - ANSWERS November 14, 1994 Section 608 of the Federal Clean Air Act requires technicians to what? - ANSWERS Recover all refrigerants. The objective of the Clean Air Act is to protect what? - ANSWERS The earth's stratosphere. HFC's - ANSWERS HydroFlouroCarbon's CFC's - ANSWERS ChloroFluoroCarbon's ODP - ANSWERS Ozone Depletion Potential Which international treaty agreement was the basis for Section 608? - ANSWERS The Montreal Protocol. Depletion of the ozone in the stratosphere is know to cause what 6 things? - ANSWERS 1.Crop losses 2.Increases in eye diseases 3.Skin Cancer 4.Reduced marine life 5.Deforestation 6.Increased ground level ozone What happens when CFC or HCFC molecules get in the stratosphere & free atoms of Chlorine are set free? - ANSWERS These atoms attack Ozone Molecules causing the formation of Chlorine Monoxide (CLO), after colliding with another Ozone Molecule, causes 2 Oxygen (O2) molecules to be made & leaving an atom of chlorine to act as "Free Agent" starting the process over until 100,000 molecules of Ozone are destroyed by just one atom of chloride. What date was recovery equipment required to be certified by a lab, & achieve higher evacuation levels, & have low loss fittings? - ANSWERS November 15, 1993 On what date was technician certification required? - ANSWERS November 14, 1994 What date was CFC's phased out of production? - ANSWERS December 31, 1995 What is EPA 608 Type I certification? - ANSWERS Persons who maintain, service, repair, or dispose of small appliances (containing 5 pounds of refrigerant (or less). What is EPA 608 Type II certification? - ANSWERS Persons who maintain, service, repair, or dispose of high and very high pressure appliances. Except small appliances and motor vehicle air conditioning systems. What is EPA 608 Type III certification? - ANSWERS Persons who maintain, service, repair, or dispose of low pressure appliances. What is EPA 608 Universal certification? - ANSWERS Persons who maintain, service, repair, or dispose of both low and high pressure equipment, as well as appliances. HCFC's - ANSWERS HydroChloroFluoroCarbons What are HydroChloroFluoroCarbons? - ANSWERS Commonly known as HCFC's, they are a group of man-made compunds containing hydrogen, chlorine, fluorine, and carbon. A recovery cylinder must not be filled more than ___ % of it's capacity by weight? - ANSWERS 80% How should refrigerant cylinders be shipped? - ANSWERS Up-right with proper DOT classification tags. What oil MUST be used with ALL HFC's for HVAC/Refrigeration but will also work with CFC's and HCFC's. - ANSWERS Polyolester HCFC's have very low atmospheric concentrations measured in parts per? - ANSWERS Trillion All cooling systems containing more than 50 lbs. of refrigerant must be repaired when the annual leak rate exceeds___? - ANSWERS 15% Mineral Oils are used with? - ANSWERS All CFC's Alkebenzene is used alone or as an additive for? - ANSWERS HCFC's (Will also work with CFC's) POE - ANSWERS Polyolester What is the definition of a Type I Appliance? - ANSWERS A small appliance that is manufactured, charged, and hermetically sealed in a factory with 5 Lbs. of refrigerant or less. What is the definition of a Type II Appliance? - ANSWERS High pressure or very high pressure appliances except for small appliances and motor vehicle air conditioning. Refrigeration systems containing more than 5 Lbs. of high or very high pressure refrigerants. What is the definition of a Type III Appliance? - ANSWERS Low pressure equipment like low pressure chillers. All refrigerants are assumed to be a single chemical if they are numbered what? - ANSWERS 1-399 and 600 and above. What is an Azeotrope? - ANSWERS A mixture of two or more liquids in such a ratio that it's composition cannot be changed by vaporizing it. Azeotrope's are numbered what? - ANSWERS 500 to 599 What is fractionation? - ANSWERS When the refrigerant leaks, it leaks out in different rates due to the different pressures. What is Temperature Glide? - ANSWERS When the temperature of the vaporizing refrigerant changes, even though the pressure remains the same. What are the two basic types of recovery devices? - ANSWERS Self-Contained and System-Dependent. System-Dependent devices may only be used on appliances containing how much refrigerant? - ANSWERS 15 Lbs of refrigerant or less What MUST be placed on a refrigerant cylinder being returned for reclaiming. - ANSWERS A refrigerant label. After completing the transfer of liquid refrigerant between a recovery unit and a refrigeration system, you should guard against what? - ANSWERS Trapping liquid refrigerant between the service valves. When pressurizing a system with nitrogen, you should always? - ANSWERS Charge through a pressure regulator. What are the three "R's"? - ANSWERS Recover, Recycle, and Reclaim. In relation to the three "R's" what is Recover? - ANSWERS To remove refrigerant in any condition from a system and store it in an external approved container. In relation to the three "R's" what is Recycle? - ANSWERS To clean refrigerant for reuse by seperating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter dryers.