EPA 608 Practice exam type 1, Questions and answers, rated A

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EPA 608 Practice exam type 1, Questions and answers, rated A The sale of reclaimed CFC, HCFC, HFC, and HFO refrigerants is_______. - ✔✔-Restricted to technicians who are EPA certified and refr ... igerant recovery A small Pliance is defined as a system that is - ✔✔-Manufactured, fully charged, and hermetically sealed in a factory with a charge of 5 pounds or less A __________ recovery device can be use for type 1 small appliance applications or type 2 applications if the total charge is below 15 pounds. - ✔✔-System dependent You must have a self-contained recovery machine available unless you only work on - ✔✔-Small appliances Recovery devices for use with small appliances must be capable of - ✔✔-Recovering 90% of the refrigerant when the compressor is operating The hydrocarbon refrigerant approved for retrofit into existing household refrigerators is - ✔✔-None. Hydrocarbons are not approved for any retrofit applications New household refrigerators with a charge of less than 57 grams (2 ounces weight) can use any of the following refrigerants, except. - ✔✔-R-1235yf And exempt refrigerant is any refrigerant that has a 0 Ozone depletion potential (0 ODP) any global warming potential (GWP) equal to or lower than carbon dioxide, that is a GWP of _________ or less. - ✔✔-1 What is not a small appliance? - ✔✔-An MVAC-like system that holds 3 pounds of R-22 Any system with a charger less than ________ pounds can you system dependent recovery equipment. - ✔✔-15 Anytime pressurized nitrogen is put into the system, the nitrogen gas - ✔✔-Maybe vented to the ambient air When a tank of mixed refrigerant is sent to a reclaimer, they can - ✔✔-Either refuse to except the refrigerant or charge extra for processing it A passive system dependent recovery process - ✔✔-Recovered refrigerant in a non-pressurized container What is the pressure of a storage cylinder of R-134A, that is stored in a room where the temperature is 100°F? - ✔✔-124 PSIG What is the pressure of a storage cylinder of R-404A, that is stored in a room where the temperature is 100°F? - ✔✔-237 psig Any refrigerant that is vented off the top of the charging cylinder - ✔✔-Must be recovered Recovery of refrigerant cannot begin if the initial pressure in the system is - ✔✔-0 psig What is the pressure of the storage cylinder of R-410a, that is stored in a room where the temperature is 100°F? - ✔✔-319 psig To reach the necessary recovery level, when using a ________, it will most likely be essential to heat and strike the compressor with a rubber mallet to release any refrigerant. - ✔✔-Passive recovery devices on a small appliance with a non-operating compressor You must know the ________ before beginning a refrigerant recovery. - ✔✔-Type of refrigerant that is in the system Nitrogen tanks should always be equipped with a ________. - ✔✔-Pressure regulator and pressure relief valve downstream of the regulator If a large leak of refrigerant occurs, __________. - ✔✔-Immediately vacate in naturally ventilate the area A very large refrigerant leak can cause Suffocation because refrigerants - ✔✔-Are heavier than air and displace oxygen Always _____________ when connecting or disconnecting refrigeration hoses. - ✔✔-1.) wear safety eyewear and butyl-lined gloves 2.) verify the hoses are rated for the refrigerant being used 3.) avoid trapping liquid refrigerant in the hoses CFC and HCFC refrigerants can decompose to form - ✔✔-Hydrochloric and hydrofluoric acids Applying heat, with a heat gun, to the compressor; - ✔✔-Can help vaporize any trapped liquid refrigerant during recovery. Which HC refrigerant is allowed for use in new domestic small appliances? - ✔✔-R-600a Technicians who perform sealed system service on small points is must have - ✔✔-Type 1 or universal certification Recovering multiple types of refrigerant in the same cylinder; - ✔✔-Will make the reclaimed refrigerants unreclaimable Type one certification is required for; - ✔✔-Persons handling refrigerant during maintenance, service, or repair of small appliances. Recovery equipment must be - ✔✔-Certified by an EPA approved testing laboratory When filling a charging cylinder with a regulated refrigerant; - ✔✔-The refrigerant vapor that is vented off the top of the cylinder must be recovered. Which of the following is true regarding refrigerant leaks one small appliances? - ✔✔-EPA does not require repair, but leaks should be repaired whenever possible. If a strong odor is detected while performing a refrigerant recovery process, - ✔✔-A compressor burnout has likely occurred. [Show More]

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