EPA 608 Type 2 Exam % Correct Answers .

EPA 608 Type 2 Exam % Correct Answers . Technicians maintaining, servicing, repairing or disposing of high pressure or very high-pressure appliances, except small appliances and MVAC, must be certified either as a Universal Technician or a ______ ___. Type 2 After the installation of any type of system, the unit should be pressurized with _____ and _____ checked. nitrogen leak Nitrogen is an ______ gas. inert In order to determine the general area of a leak, technicians should use a _____ or _____ leak detector. electronic ultrasonic After locating the general area of a leak, ______ ______ are used to pinpoint it. soap bubbles A refrigeration unit using an open compressor that has not been used in several months is likely to leak from the rotating shaft ______. seal During a visual inspection of any type of system, _____ of _____ are an indicator of a refrigerant leak. traces oil Excessive ________, caused by a low refrigerant charge, is an indication of a leak in a high-pressure system. superheat A low ______ _______ may be the cause of excessive superheat in a highpressure system. refrigerant charge Epa regulations require that all comfort cooling appliances containing more than _____ lbs. of refrigerant MUST be repaired when the annual leak rate exceeds _____ %. 50 15 Epa regulations require that all commercial and industrial process refrigeration systems containing more than _____ lbs. of refrigerant MUST be repaired when the annual leak rate exceeds _____ %. 50 35 Recovered refrigerants may contain _____, moisture, and oil. acids Recovered refrigerants may contain acids, ______, and oil. moisture Recovered refrigerants may contain acids, moisture, and ________. oil