EPA CORE EXAM 2023/2024 WITH 75 QUESTIONS AND ANSWERS

EPA CORE EXAM When servicing an R-22 system you CANNOT - ANSWER top off the unit with R-407C Reclaimed refrigerant must be tested to meet __________________ before it can be resold. - ANSWER AHRI 700 EPA may require technicians to demonstrate their ability to perform proper procedures for recovering and/or recycling refrigerant. Failure to demonstrate or failure to properly use the equipment may result in: - ANSWER Revocation of the technician's certification You have to leak check a unit which has lost a complete charge. Which gas(es) would cause the LEAST damage to the environment? - ANSWER Dry nitrogen _____________________ refrigerant has an ODP that is greater than 1. - ANSWER R-22 Which of the following is a lawful use of HCFC-22? - ANSWER Servicing existing R-22 systems _________________ has the lowest ODP. - ANSWER R-410A The EPA's "safe disposal requirements" make the __________________ responsible for ensuring that all refrigerant has been removed from household refrigerators before they are disposed. - ANSWER final person in the disposal chain If technicians lose their certification card, they must_________________. - ANSWER request a replacement from the company that provided the certification Which refrigerant(s) must be recovered before opening or disposing of appliances? - ANSWER All Refrigerants must be recovered before opening or disposing of appliances? Ozone depletion is caused by ______________ in HCFC refrigerants. - ANSWER chlorine State and local governments __________________. - ANSWER can make laws that are stricter requirements than the federal regulations Which appliances are NOT covered by EPA regulations? - ANSWER Desiccant dehumidifiers After a refrigerant is phased-out, supplies of that refrigerant for equipment servicing can only come from __________________. - ANSWER recovered and reclaimed gas Ozone contains how many atoms of oxygen? - ANSWER molecules containing 3 oxygen atoms The ___________ program identifies alternative refrigerants for use. - ANSWER SNAP A refrigerant cylinder that has a gray body and a yellow top indicates the cylinder is designed to hold: - ANSWER Recovered refrigerant HCFC refrigerants are made up of? - ANSWER Hydrogen, chlorine, fluorine, and carbon How should refrigerant cylinders be positioned when they are shipped? - ANSWER Upright Which of the following proves that HCFCs are in the stratosphere? - ANSWER HCFCs found in air samples from the stratosphere. A "self-contained" recovery device ________________. - ANSWER removes refrigerant with the assistance of components in the appliance Which type of refrigerant typically has the lowest global warming potential? - ANSWER HFOs