EPA 608 Type I Certification - Questions and Answers Which of the following is not a Type I appliance? a) An MVAC-like system that holds three pounds of
... [Show More] R-12 b) A water cooler that holds 13 ounces of R-12 c) A food freezer that holds 22 ounces of R-22 d) A dehumidifier with 7 ounces of R-500 When transporting refrigerants, DOT (Department of Transportation) Regulation number 49 CFR requires _________ to be recorded on the shipping papers for hazard class 2.2, Nonflammable Compressed Gases. a) volume of each cylinder b) total cubic feet of each refrigerant c) the number of cylinders of each gas d) total weight of all cylinders To avoid accidental removal of liquid refrigerant when recovering vapor from the system, using a self-contained (active) recovery device that cannot handle liquid refrigerant, you should draw vapor from the: _______. a) capillary tube b) low side c) high side d) all of the above Piercing-type valves should only be used on which of the following tubing materials? a) Copper b) Aluminum c) Steel d) Both a and b If R-12 or R-22 are exposed to high temperatures (from open flames or glowing hot metal surfaces for example), these refrigerants can decompose to form: __________. a) hydrochloric and hydrofluoric acids b) sulfuric and phosphoric acids c) boric and chromic acids d) none of the above Which refrigerants can be mixed? a) R-12 and R-134a b) R-12 and R-500 C) R-22 and R-410A d) Refrigerants can never be mixed. Why is it important to obtain an accurate pressure reading of refrigerant inside a recovery cylinder? a) The pressure reading along with a temperature reading can indicate if there is excessive air or other non-condensables in the cylinder. b) The pressure reading can indicate the remaining cylinder capacity. c) The pressure reading can indicate if the refrigerant has been damaged d) Both a and c. Which of the refrigerants listed below should be recovered with current EPA-approved recovery devices? a) Ammonia b) Hydrogen c) Water d) None of the above need to be. Prior to shipping any used refrigerant it is necessary to: ___________. a) properly label the refrigerant container b) properly complete shipping paperwork c) check that the refrigerant container meets DOT standards d) all of the above When checking for the existence of non-condensable gases inside a recovery cylinder, why is it proper procedure to allow the temperature of the cylinder to stabilize at room temperature before taking a pressure reading? a) To prevent safety valves from purging excess refrigerant. b) Because it is a quick method of determining refrigerant level inside the tank. c) Because a temperature reading alone is enough to determine refrigerant quality. d) Because any comparison to a pressure-temperature chart is only valid if both the pressure and temperature of the refrigerant are stable. Recovery devices that were manufactured before November 15, 1993 and are used for recovery of refrigerant from small appliances must be capable of: ___________. a) recovering 80% of the refrigerant whether or not the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993 b) recovering 70% of the refrigerant if the compressor is operating or achieving a 4 inch vacuum under conditions of ARI 740-1993 c) achieving a 10 inch vacuum under conditions of ARI 740-1993 d) of recovering all the refrigerant if they are still to be used EPA regulations require the capture of at least 80% of the refrigerant from a small appliance with a non-operating compressor if the technician is using: _____________. a) a system-dependent (passive) recovery unit b) a self-contained (active) recovery unit c) either (active or passive) type of recovery unit d) refrigerant recovery from inoperable systems is not required The sale of refrigerants is: ___________. a) banned b) limited by law to equipment owners c) allowed only if there is proof of need d) restricted to technicians who are certified in refrigerant recovery According to the EPA, which recovery equipment maintenance practice(s) should be performed on a regular basis? a) Check recovery device for refrigerant leaks. b) Check vacuum pump for any leaks. c) Check pump amperage draw of recovery device. d) All of the above. Technicians with a Type I small appliance certification are certified to recover refrigerant during the maintenance, service or repair of: ________. a) small unitary air-conditioning systems with 7 pounds or less of refrigerant b) packaged terminal air conditioners ("PTACs") with 5 pounds or less of refrigerant c) low pressure equipment d) motor vehicle air-conditioning equipment A refrigerant that can be used as a direct service "drop-in" substitute for R-22 in a small appliance is: __________. a) R-410A b) R-134a c) R-141b d) none of the above When you connect your service manifold to check system pressures, it's always a good idea to: _________. [Show Less]