EPA Type 2 Certification Questions With Complete Solutions

Technicians maintaining, servicing, repairing or disposing of high pressure or very high-pressure appliances (except small appliances and motor vehicle air conditioning systems, must have what certification(s). correct answer: Type 2 Technician or a Universal Technician After the installation of any type of system, what is the first thing that should be done? correct answer: The system should first be pressurized with nitrogen (an inert gas) and leak checked In order to determine the general area of a leak, what should be used? correct answer: An electronic or ultrasonic leak detector Once the general area of a leak is located, what should be used to pinpoint the leak? correct answer: Soap bubbles A refrigeration unit using an open compressor that has not been used in several months is likely to leak from where? correct answer: The rotating shaft seal During a visual inspection of any type of system, what is an indication of a refrigerant leak? correct answer: Oil What kind of superheat will be seen when there is a leak in a high pressure system? correct answer: Excessive superheat caused by a low refrigerant charge EPA regulations require that all comfort cooling appliances