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

A "compound gauge": Can only be used for low pressures - Has different unit scales According to EPA regulations, when system flushing is required following a compressor burnout, the following refrigerant must be used: System flushing with refrigerants is illegal A CFC contains: Chlorine, fluorine, carbon A CFC - 11 cylinder is: Orange An HFC-134a cylinder is: Sky blue or pale blue A chlorine atom will combine with an ozone molecule to form: Chlorine Monoxide An HCFC contains: Hydrogen, chlorine, fluorine, carbon An HFC contains the following chemicals: Hydrogen, fluorine, carbon Alkylbenzene lubricants are associated with: Ternary blends All appliances currently manufactured or imported into the United States must be equipped with: A service aperture or device to enable the removal of refrigerant A recovery cylinder is: Gray with yellow top A refillable cylinder may be filled to a maximum of: 80% of its liquid weight A refrigerant heated above its boiling point is: Superheated A refrigeration system should not be recovered unless a gauge indicates a minimum pressure of _________ Psig within the system. 15 Psig Any vapor refrigerant vented from the top of a graduated charging cylinder while filling the charging cylinder with liquid: Must be recovered As of January 1st, 1996: It is illegal to import or manufacture CFCs in the United States As of November 15, 1993, all recovery equipment must: Be fitted with low loss fittings - Be certified by an EPA approved agency As of November 15, 1993, recovery machines: Must be certified to meet EPA standards A system may be said to be properly dehydrated when: The vacuum indicator has reached and held the required vacuum for a period of time A technician who violates provisions of the CAA: May be fined - May lose certification - May be required to appear in court Refrigerant cylinders should be transported in a ______________ position: Vertical An award of __________________ may be paid to a person providing information which leads to a penalty against a technician for violating CAA regulations. $10,000 Before using an empty recovery cylinder, you should: Evacuate the cylinder Before using a recovery unit, you should: Check service valves positions - Check oil level Evacuate Blended refrigerants leak from a system: In uneven amounts due to different vapor pressures CAA is the acronym for: Clean Air Act Can ester based oils be mixed with other oils? No Can mixed refrigerants be reclaimed? No Can state or local laws governing refrigerant be less strict than federal laws? No Can you use a open flame to warm a refrigerant bottle? No CFCs are considered more harmful to the ozone layer than HCFCs because: They are not water soluble, and do not wash out of the atmosphere Currently, almost all residential air conditioners use refrigerant ______________: HCFC-22 For safety, a technician should always wear_____________ and ____________ when working around refrigerants: Butyl gloves and goggles Heating a refrigerant cylinder with a torch can cause: Explosion and injury - Refrigerant to de-compose into to a toxic material - Release of refrigerant to atmosphere HCFC-123 is: Toxic HFC-134a is a 'drop in' replacement for CFC-12. Fal