EPA 608 actual exam 2024 with 100% correct answers(download to pass)

Type I certification allows the certified person to work on the following type of systems Small appliances 5 pound or less excluding split systems When retrofitting or converting a system to use a different refrigerant, only EPA-approved substitutes can be used. Many refrigerants are said to be a "direct drop in replacement refrigerant" What does the EPA state about drop in refrigerants? There is no such thing as a drop in refrigerant. Recovery equipment used during service, maintenance, or repair must be With an inoperative compressor, the equipment used to recover CFC, HCFC, and HFC refrigerants from small appliances, for the purpose of disposal, must be able to recover 80% of the refrigerant or achieve 4 inches of vacuum. Self-contained recovery devices, for use with small appliances containing CFCs, HCFCs, HFCs, and HFOs, must be able to recover 90% of the refrigerant when the compressor is operating or achieve 4 inches of vacuum Certified by an independent EPA approved laboratory When servicing a small appliance found to be leaking, it is not mandatory to repair the leak, but it is recommended to do so whenever possible. Before beginning a refrigerant recovery procedure, it is always necessary To know the type of refrigerant in the system to prevent mixing of refrigerant in the recovery cylinder A passive, system-dependent, recovery process for small appliances can capture refrigerant in a non-pressurized container. When using passive recovery devices on small appliances with non-operating compressors it is essential to take measures to help release trapped, regulated refrigerant from the compressor oil during refrigerant recovery. It is helpful to heat (with a torch) and strike the compressor with a rubber mallet when recovering refrigerants into a non-pressurized container from a small appliance, such as a household refrigerator, with an inoperative compressor. Doing so will help free refrigerant that might be trapped under the oil in the compressor crankcase. False During active recovery, the technician may experience excessive pressure on the high-side of the recovery machine and in the recovery cylinder. Excessive high-side pressure indicates the following That there is large quantities of non-condensable gases mixed with the refrigerant. Household appliances charged with an HC refrigerant require which safety practices Require safety labels on the exterior of the appliance. Require safety labels on or near the evaporator. Require safety labels on or near the compressor compartment. Require safety labels on or near the refrigerant lines. During system recovery and/or repair, a pungent odor detected from the refrigerant normally indicates a A compressor burn-out. What type of certification is required to service or repair of small appliances? Type 1 or Universal When filling a charging cylinder, the refrigerant that is vented off the top of the cylinder Must be vented you should perform the following recovery equipment maintenance on a regular basis? Check your recovery device for leaks Check voltage and amp draw of recovery device Check your vacuum pump for leaks A cylinder of pure recovered R-22 at room temperature of 75°F will have a pressure of: 130 psig When refrigerant is overheated the following con be formed Phosgene gas When installing an access fitting in a sealed system The fitting should be leaked tested Refrigerant that is vented off the top of a graduated charging cylinder during filling Must be recovered In type 1 appliances, what is the maximum allowable factory charge? 5 pounds When used for small appliances, recovery machines manufactured before November 15, 1993 must meet the following? Capable of recovering 80% of the refrigerant whether the compressor operates or not and achieve a 4 inch vacuum You find a large leak of refrigerant and no self-contained breathing apparatus is available you should Vacate and ventilate the area Why should you allow the temperature of a refrigerant cylinder to stabilize at room temperature before taking a reading when checking for non-condensables? To stabilize the refrigerant and determine if the pressure is higher than a pressure-temperature chart indicates it should be Recovery equipment used on small appliances manufactured after November 15,1993 must be Capable of recovering 90% of the refrigerant