HVAC (EPA Certification Exam Section 608 Questions With Verified Answers

How many types of HVAC certifications are there? - Answer There are 4 types. What does a metering device do? - Answer The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. What is absorbed in the evaporator? - Answer Heat is absorbed in the evaporator. What happens in the evaporator? - Answer Heat is absorbed in the evaporator and causes the refrigerant to boil from liquid to vapor. At the outlet of the evaporator the refrigerant is what? - Answer The refrigerant is now a low temperature, low pressure vapor. As the refrigerant expels heat, the refrigerant condenses to a what? - Answer It condenses to a liquid. At the condenser outlet what pressure is the refrigerant? - Answer The refrigerant is a high pressure liquid. What is a metering device used for? - Answer The metering device causes a reduction in pressure, and therefore a reduction in saturation temperature. A system that uses a capillary tube or fixed bore metering device is usually equipped with a blank? - Answer Accumulator which would be located in the suction line directly following the evaporator. A system that uses a thermostatic expansion valve is usually equipped with a what? - Answer A receiver, which would be located in the liquid line directly following the condenser. The compound gauge is what color? - Answer Blue. The high pressure gauge is what color? - Answer Red. The blank measures low pressure (psig) and vacuum (inches Hg.). - Answer Compound gauge. What does the high pressure gauge measure. - Answer It measures high side (discharge) pressure. EPA regulations require that hoses be equipped with what? - Answer Low loss fittings that will minimize refrigerant loss when hoses are disconnected. The stratosphere is located where? - Answer Between 10 and 30 miles above sea level. What is the stratosphere comprised of? - Answer Ozone. An Ozone molecule consists of what? - Answer Three oxygen atoms (03). What does Ozone protect us from? - Answer Harmful ultraviolet radiation. What does Ozone help maintain? - Answer It helps maintain stable Earth temperatures. Depletion of Ozone in the stratosphere causes what? - Answer Crop loss, Increase in eye diseases, Skin cancer, Reduced marine life, Deforestation , Increased ground level ozone. What depletes the ozone layer? - Answer CFC's and HCFC's. When a chlorine atom meets with an Ozone molecule, it takes how many Oxygen atoms from the Ozone? - Answer One. When a chlorine atom meets with an Ozone molecule, it takes one Oxygen atom from the Ozone. What compound does this form? - Answer Chlorine Monoxide (CIO). O2 A single Chlorine atom can destroy how many Ozone molecules? - Answer 100,000 Ozone molecules. Volcanoes contribute a blank quantity of Chlorine as compared to CFC's? - Answer A small quantity. Will the chlorine in CFC's dissolve in water? - Answer No. What is Ozone Depletion Potential (ODP)? - Answer A measurement of CFC's and HCFC's ability to destroy ozone. What has the highest ODP? - Answer CFC's. What do not contain chlorine and have no Ozone Depletion Potential? - Answer HFC's (R-134A). What does CFC stand for? - Answer Chlorine Fluorine Carbon. What does HCFC stand for? - Answer Hydrogen Chlorine Fluorine Carbon. What does HFC stand for? - Answer Hydrogen Fluorine Carbon. What is R-134a? - Answer Hydrogen Fluorine Carbon (HFC). What is R-22 and R-123? - Answer Hydrogen Chlorine Fluorine Carbon (HCFC). What is R-11, R-12, and R-500? - Answer Chlorine Fluorine Carbon (CFC). Who regulates section 608 of the Federal Clean Air Act? - Answer The Environmental Protection Agency (EPA). Failure to comply with section 608 of the Federal Clean Air Act could cost what? - Answer Failure to comply could cost you and your company as much as $27,500. per day, per violation and there is a bounty of up to $10,000. It is a violation of Section 608 to vent CFC's or HCFC's since what date? - Answer July 1, 1992. It is a violation of Section 608 to vent HFC's since what date? - Answer November 15, 1995. Is it a violation of Section 608 to not have an EPA approved recovery device, equipped with low loss fittings, and register the device with the EPA? - Answer Yes, it is a violation. What is responsible for regulating the production and use of CFCs, HCFC's, halons, methyl chloroform and carbon tetrachloride? - Answer The Montreal Protocol. When did the Montreal Protocol come into affect? - Answer Mid 1989. CFC's were phased out of production on what date? - Answer December 31, 1995. After virgin supplies of CFC's are depleted where will future supplies will come from? - Answer From recovered, recycled, or reclaimed refrigerants. Are HCFC refrigerants scheduled to phase out? - Answer Yes, in the future. What are the three R's? - Answer Recover, Recycle, and Reclaim. What is the meaning of Recover? - Answer To remove refrigerant in any condition from a system and store it in an external container. What is the meaning of Recycle? - Answer To clean refrigerant for rouse by separating the oil from the refrigerant and removing moisture from the refrigerant by passing it through one or more filter driers. What is the meaning of Reclaim? - Answer To process refrigerant to a level equal to new (virgin) product specifications as determined by chemical analysis.