EPA 608 Type 2 Exam Questions with 100% Correct Answers Latest Updated .

EPA 608 Type 2 Exam Questions with 100% Correct Answers Latest Updated . 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 Because of the acids, moisture, and oil that may be in recovered refrigerants, it is necessary to frequently check and change both the _____ and _____ on recycling machines. oil filter Recycling and Recovery machines using ______ compressors may overheat when pulling a deep vacuum. hermetic Recycling and Recovery machines using hermetic compressors may overheat when pulling a deep vacuum because the unit relies on the flow of ______ through the compressor for ______. refrigerant cooling Before using a recovery unit, you should always check the _______ _______ _______, the oil level of the unit, and evacuate and recover any remaining refrigerant in the unit's receiver. service valve positions Before using a recovery unit, you should always check the service valve positions, the _____ _____ of the unit, and evacuate and recover an remaining refrigerant in the unit's receiver. oil level Before using a recovery unit, you should always check the service valve positions, the oil level of the unit and evacuate and recover an remaining refrigerant in the unit's ________. receiver Technicians working with multiple refrigerants, before recovering and/or recycling a different refrigerant, must ______ the recover/recycle equipment by recovering as much of the first refrigerant as possible, change the filter, and evacuate. Exception: technicians working with R - 134 A. purge Technicians working with multiple refrigerants, before recovering and/or recycling a different refrigerant, must purge the recover/recycle equipment by ______ as much of the first refrigerant as possible, change the filter, and evacuate. Exception: technicians working with R - 134 A. recovering Technicians working with multiple refrigerants, before recovering and/or recycling a different refrigerant, must purge the recover/recycle equipment by recovering as much of the first refrigerant as possible, change the ______, and evacuate. Exception: technicians working with R - 134 A. filter Technicians working with multiple refrigerants, before recovering and/or recycling a different refrigerant, must purge the recover/recycle equipment by recovering as much of the first refrigerant as possible, change the filter, and ______. Exception: technicians working with R - 134 A. evacuate Recovering refrigerant in the vapor phase will minimize the ______ of oil. loss Recovering refrigerant in the ______ phase can ______ recovery time. liquid reduce The technician may choose to _____ up the recovery process by packing the recovery cylinder in _____ and/or applying heat to the appliance. speed ice The technician may choose to speed up the recovery process by packing the recovery cylinder in ice and/or applying ______ to the appliance. heat After recovering refrigerant in the liquid phase, any remaining ______ is _______ by the recovery system. vapor condensed