EPA 608 Type III| QUESTIONS| Correct Answers!

a Type III Technician or Universal Technician are certified to do what? - ANSWER Maintain, service, repair, or dispose of low-pressure appliances. Most low pressure appliances are used for what? - ANSWER Most low pressure appliances are used for comfort cooling and are subject to lower allowable leak rate. The owner and/or operator of the equipment is responsible for what? - ANSWER for keeping records of all leaking inspections and any completed leak repair verification tests. It is their responsibility to obtain records from the servicing company doing any work on an appliance. What should the technician do if the EPA regulations change? - ANSWER The Technician's responsibility is to comply with EPA regulation changes. How do low-pressure systems operate? - ANSWER Low-pressure systems are semi-hermetic and operate below atmospheric pressure (in a vacuum). What can happen if there are leaks in the gaskets? - ANSWER Leaks in the gaskets or fittings can cause air and moisture to enter the system. Leaks must be repaired to reduce the operation of the purge unit and loss of refrigerants. What is the most efficient method of leak checking a charged low-pressure refrigeration unit? - ANSWER To pressurize the system using controlled hot water or heater blankets. When controlled hot water and heaters blankets are not feasible, use nitrogen to increase system pressure. When pressurizing a system, you should not exceed how many psig? - ANSWER do not exceed 10 psig. What can happen if you exceed the psig threshold? - ANSWER If you exceed 10 psig, you can cause the rupture disc to fail. What can you use controlled hot water or heating blankets for? - ANSWER Controlled hot water or heating blankets can be used to raise the pressure in a low-pressure system for the purpose of opening the system for a non-major repair. What is a "major repair" under EPA regulations? - ANSWER it means any maintenance, service or repair involving the removal of any or all of the following components: - the compressor - the condenser - the evaporator - or any auxiliary heat exchanger coil In 2019, the EPA regulations will start to require that the systems containing more than [ _____ ] pounds of refrigerants be repaired when the annual leak rate exceeds a % of the refrigerant charge. - ANSWER 50 lbs (pounds) What is the percentage threshold of comfort cooling and other types of appliances (such as dehumidifiers)? - ANSWER 10% What is the percentage threshold of commercial refrigeration? - ANSWER 20% What is the percentage threshold of industrial process refrigeration? - ANSWER 30%