EPA 608 Type 2

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 ______ ___. - Answer- Type 2 After the installation of any type of system, the unit should be pressurized with _____ and _____ checked. - Answer- nitrogen leak Nitrogen is an ______ gas. - Answer- inert In order to determine the general area of a leak, technicians should use a _____ or _____ leak detector. - Answer- electronic ultrasonic After locating the general area of a leak, ______ ______ are used to pinpoint it. - Answer- 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 ______. - Answer- seal During a visual inspection of any type of system, _____ of _____ are an indicator of a refrigerant leak. - Answer- traces oil Excessive ________, caused by a low refrigerant charge, is an indication of a leak in a high-pressure system. - Answer- superheat A low ______ _______ may be the cause of excessive superheat in a high-pressure system. - Answer- 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 _____ %. - Answer- 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 _____ %. - Answer- 50 35 Recovered refrigerants may contain _____, moisture, and oil. - Answer- acids Recovered refrigerants may contain acids, ______, and oil. - Answer- moisture Recovered refrigerants may contain acids, moisture, and ________. - Answer- 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 machine