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The ESCO Institute’s Section 608 EPA Preparatory Manual, 9th Edition, has been revised to include all new regulatory changes. EPA 608 Practice Test (core exam)Note -1 1) Compressor Under Deep Vacuum In refrigeration system the compressor should not be energized under deep vacuum or in case of service discharge or suction valves are closed. It helps in maintain the predetermined constant evaporator superheat in refrigeration system.A vacuum test could actually hide a leak:Recovery unit with sub-cooling feature accelerates the rate of recovery as it lowers the temperature of the recovery tankIt is to be ensured that the refrigerant recovery cylinder is not filled to more than _____ of its capacityWhich of the following is not most effective way to detect the general area of a small leaks:At which of the following stage in refrigeration cycle does the refrigerant changes from high-pressure vapor to a high-pressure liquid:A recovery cylinder can maximum store _____ number of refrigerants:Vacuum test is not the efficient of leak detection.Halons were completely phased out by ______ :The ____connects the evaporator to the compressor in a refrigerant system:EPA has divided refrigerated appliances into _____ groupsYou must sign in or sign up to start the quiz.If your recovery unit does not have a sub-cooling feature recovery rate will be _____ :One chlorine atom in stratosphere can able to destroy approximately _______ number of ozone molecules:During each vacuum decay test, it is observed that after creating the vacuum, the pressure of the system increases to greater than 0 psig and stops at some point, Then:Lifetime of CFCs is believed to be in the range ______ :CFCs has highest Ozone Depletion Potential because of the presence of chlorine element which reacts with ozone at stratosphereNitrogen is colorless, odourless, non inflammable and readily available (economical) gas. These dyes can cause strains on the equipment and foreign substances in dyes could invalidate the warranty. Ultra sound leak detector listens to the noise of gas leakage.Fluorescent leak detector detects the leak with the help of dyes. This may result in short circuit of motor winding at the Fusite terminals or any weak spot in the winding and damages the winding. Take the FREE EPA 608 Core exam. Take this free EPA 608 practice exam to see the types of questions that will be on an actual EPA 608 certification exam. This chlorine ion strips an oxygen atom from ozone (O3) forming chlorine monoxide (ClO) and molecular oxygen (O2). Home; HVAC Basics; HVAC Controls Quiz; EPA 608 Practice Tests. Related Pages. This process continuous in cycle resulting in greater depletion of ozone layer.As heat is removed from the refrigerant at condenser, it reaches its saturation temperature and starts to flash (change its state) into high pressure liquidOnly _____ refrigerant can be transferred or sold to another individualTXV valve maintaining the pressure difference between _____ and _____ of the system EPA 608 Practice Test. CO2 in presence of moisture forms carbonic acidIf system has leak, the pressure increases to 0 psig (atmospheric pressure) and stops.
4) type 3 We provided free EPA 608 Practice tests to test your ability to pass the final official exam. The EPA 608 certification test is divided in to four parts: 1) core 2) type1, 3) type 2. This 32-page book is clear, concise and contains everything that a candidate will need to know to take and pass the revised Universal exam.

This higher lifetime helps in diffusing CFCs into stratosphere where CFC molecule react with UV radiation depleting ozone layer.Suction line brings low pressure vapor from evaporator to compressorAfter recovering refrigerant from a sealed system, which of the following gas is used to pressurize (for leak checking) or blow debris out of the system:Which of the following substance present in refrigerant appliance results in corrosion:Which one of the following has highest Ozone Depletion Potential (ODP):You have already completed the quiz before. If the pressure is greater than 0 psig and stops at some point means refrigerant or water is still evaporating in the system.Recovered refrigerant is stored in which of the following painted tank:In recovery cylinder refrigerants shall not be mixedCFCs are highly stable in lower atmosphere and have a lifetime of about 20 to 100 years.