EPA 608 Book Exam TYPE III CERTIFICATION CORRECT 100%(SCORED A)

Technicians maintaining, servicing, repairing or disposing of low-pressure appliances must be certified as - ANSWER Type III Technician or a Universal Technician. As of November 14, 1994, the sale of CFC and HCFC refrigerants is restricted to - ANSWER Certified technicians, NOTE: If EPA regulations change after the technician is certified, it will be the technician's responsibility to comply with any future changes. Because a low-pressure system operates below atmospheric pressure (in a vacuum), leaks in the gaskets or fittings will cause - ANSWER Air and moisture to enter the system The most efficient method of leak checking a charged low-pressure refrigeration unit is to pressurize the system by the use of? - ANSWER Controlled hot water or heater blankets When controlled hot water or heater blankets are not feasible then nitrogen may be used to increase pressure. - ANSWER True When pressurizing a system, do not exceed - ANSWER 10 psig, exceeding 10 psig can cause the rupture disc to fail. When leak testing a water box, be certain the water has been removed before placing the leak detector probe through the? - ANSWER Drain valve To leak test a tube use a? - ANSWER A hydrostatic tube test kit Systems with open drive compressors are prone to leaks at the shaft seal. - ANSWER True Controlled hot water can be used to pressurize a system for the purpose of opening the system for? - ANSWER A non-major repair