609 ESCO 100% CORRECT AND UPDATED!

Who Must Be Certified? Any person that services Motor Vehicle Air Conditioning (MVAC) must be certified. Servicing of motor vehicle air conditioning includes repairs, leak testing, and "topping off" of air conditioning systems low on refrigerant, as well as any other repair to the vehicle that requires dismantling any part of the air conditioner. NOTE: Service performed on HCFC-22 air conditioner systems typically found on busses, is NOT covered under section 609, but rather section 608 of the Clean Air Act. Technician certification IS required under section 608. For more information on Section 608 certification, contact The ESCO Institute at (800) 726-9696. Test Format The certification test contains 50 multiple-choice questions. All of the information necessary for the technician to achieve a passing score on the certification test is contained within this manual. The certification test will contain a variety of qu - ANSWERfrist page Stratospheric Ozone Depletion During the last 100 years, refrigerants such as; CFCs, HCFCs, HFCs, and HFOs have dramatically changed our lifestyles. Little did we know that the use and release of these compounds into the atmosphere would have devastating effects on the Earth's environment. One of these effects is far removed from the Earth's surface, in the Stratosphere. Located between 7 and 30 miles above the Earth's surface, the Stratosphere contains the Ozone layer. The Ozone layer is the earth's security blanket. The Ozone layer serves two important functions. Ozone protects us from harmful Ultra Violet Radiation and helps to maintain stable Earth temperatures. Depletion of Ozone in the Stratosphere causes: Increased eye disease Skin cancer Crop loss Deforestation Reduced marine life Increased ground level ozone An Ozone molecule consists of three oxygen atoms (O3). When CFC's are released into the atmosphere, t - ANSWER2nd page