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EPA 609 TECHNICIAN CERTIFICATION EXAM |
ACTUAL EXAM QUESTIONS AND CORRECT
ANSWERS | GRADED A+ | VERIFIED ANSWERS |
LATEST VERSION (JUST RELEASED)
Technicians who repair or service HFC-134a MVACs must be trained and certified by an EPA-approved organization ------CORRECT ANSWER-------- -------True Moisture content in recycled R-134a (HFC-134a) that has been directly removed from and intended to be returned to a mobile air-conditioning system cannot exceed _______ by weight ------CORRECT ANSWER-------- -------50 PPM R-134a disposable refrigerant cylinder is ________ color coded: ------ CORRECT ANSWER---------------light blue Disposable cylinders are manufactured to specifications established by: ---- --CORRECT ANSWER---------------DOT Which of the following refrigerant has a molecular formula is C2H4F2: ------ CORRECT ANSWER---------------R-152a The AHRI standard now contains the new specification to limit unsaturated impurities in HFC-134a to a maximum level of ________ ------CORRECT ANSWER---------------40 ppm
Refrigerants may be mixed in recovery cylinders: ------CORRECT ANSWER---------------False After reaching the required recovery vacuum on an system, if the system pressure _____, indicating that there is either refrigerant in liquid form, refrigerant trapped in the oil, or a leak in the system. ------CORRECT ANSWER---------------rises Any person who sells or distributes any Class I or Class II substance in a container of less than _________ of such refrigerant must verify that the purchaser is Properly Trained and 609 Certified and must retain a record. -- ----CORRECT ANSWER---------------20 pounds EPA does require a leak to be repaired prior to recharging a motor vehicle air conditioning system ------CORRECT ANSWER---------------False Which of the following are the causes of Ozone Layer Depletion: ------ CORRECT ANSWER---------------Hydrochlorofluorocarbons, Volcanic eruptions, and Chlorofluorocarbons ______ has developed standards that apply to the recovery and recycling of motor vehicle refrigerant as well as service guidelines for MVAC technicians. ------CORRECT ANSWER---------------SAE Ozone layer extends at Earth's altitude between _____ ------CORRECT ANSWER---------------7 and 30 miles
Under these safe disposal requirements as per the EPA, the final person in the disposal chain, is responsible for ensuring that the refrigerant is recovered from the equipment before the final disposal of the equipment: -- ----CORRECT ANSWER---------------True The U.S. EPA does characterize used refrigerants as hazardous waste -----
- CORRECT ANSWER---------------False The CO2 system would be acceptable to the EPA under the condition that MVAC system was designed to avoid concentrations in the passenger cabin that are above _____ for more than 15 minutes ------CORRECT ANSWER---------------3% Refrigerant containers which contain refrigerant more than 20 pounds can be sold to a person who holds _______ ------CORRECT ANSWER------------ ---either Section 608 or Section 609 certification Since _______, it has been illegal to vent substitutes for chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) refrigerants: ------CORRECT ANSWER---------------November 15, 1995 Which of the following is the example of HFCs: ------CORRECT ANSWER-- -------------R-134a Which of the following are associated with risk of depletion of ozone layer: (Multiple Answer Question) ------CORRECT ANSWER---------------Damage to agriculture and wildlife, increase in skin cancers, increased global warming, and damage to aquatic organisms
Service technicians who violate Clean Air Act provisions can be: ------ CORRECT ANSWER---------------lose their certification, fined, and face federal charges Purity specification of new, recycled or reclaimed R-134a must meet _____ standard: ------CORRECT ANSWER---------------AHRI Standard 700 Lifetime of CFCs is believed to range from _____ years? ------CORRECT ANSWER---------------2 to 100 For determining the Ozone Depletion Potential ________ having been assigned a factor of 1? ------CORRECT ANSWER---------------CFC- 11 Ester-based synthetic oils can be mixed with other oils? ------CORRECT ANSWER---------------False R-134a is a chlorine-free refrigerant ------CORRECT ANSWER--------------- True Ozone layer absorbs and scatters ________ from the sun ------CORRECT ANSWER---------------ultraviolet light For determining the Ozone Depletion Potential ________ having been assigned a factor of 1 ------CORRECT ANSWER---------------CFC- 11
MVAC systems being disposed must be evacuated to _____ of mercury before being scrapped ------CORRECT ANSWER---------------4 inches Since ________, it is no longer legal for CFCs to be manufactured or imported into the United States ------CORRECT ANSWER---------------Jan 1, 1996 The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent the release of ozone depleting substances. ------CORRECT ANSWER--------------- 1990 At high temperatures, CFC-12 can decompose to form _______ ------ CORRECT ANSWER---------------hydrochloric and hydrofluoric acid Ozone molecule consists of ______ atoms of oxygen ------CORRECT ANSWER---------------three CFCs are highly reactive in _____ of atmosphere ------CORRECT ANSWER---------------lower Non-condensables in a refrigeration system result in a _______ discharge pressure ------CORRECT ANSWER---------------higher Moisture level in Recycled R-12 (CFC-12) that has been directly removed from, and intended to be returned to, a mobile air-conditioning system
cannot exceed _______ PPM by weight. ------CORRECT ANSWER---------- ----- 15 Over the road refrigeration units and R-22 (HCFC) air conditioning, such as that found in buses, also requires Section ______ certification ------ CORRECT ANSWER--------------- 608 Ozone depletion increases global warming ------CORRECT ANSWER-------- -------True Refrigerants are lighter than the air: ------CORRECT ANSWER--------------- False Stratosphere layer consists of about _____ of the available Ozone: ------ CORRECT ANSWER---------------90% Every refrigerant cylinder need not be protected by some type of pressure relief device: ------CORRECT ANSWER---------------False If a technician is already trained and certified to handle CFC-12, he has to be re-certified to handle HFC-134a ------CORRECT ANSWER--------------- False Which of the following refrigerants has high ozone-depletion potential: ------ CORRECT ANSWER---------------CFCs
MVAC systems need not be evacuated to a vacuum before servicing ------ CORRECT ANSWER---------------False Supplies of CFC refrigerant for equipment servicing can ONLY come from which of the following: ------CORRECT ANSWER---------------recovery, reclamation, and recycling Which of the following in refrigerant makes them chemically less stable once they enter the atmosphere ------CORRECT ANSWER--------------- Hydrogen CFCs deplete stratospheric ozone and that a "hole" had developed in the ozone layer over ______ ------CORRECT ANSWER---------------Antarctica ______ has recently been approved for use in automobile applications as an alternative to R-134a ------CORRECT ANSWER---------------R152a HFCs and HCFCs decompose when released in the lower atmosphere: ---- --CORRECT ANSWER---------------True The Global Warming Potential is reported relative to _______: ------ CORRECT ANSWER---------------carbon dioxide
EPA is authorized to assess fines of up to ______ per day per violation for any violation of the act ------CORRECT ANSWER---------------$37, A floor tax also applies to anyone holding ______ or more of the regulated CFCs ------CORRECT ANSWER---------------400 lb. R-12 is a ______ type of refrigerant ------CORRECT ANSWER--------------- CFC HFCs contributes to the global warming: ------CORRECT ANSWER----------- ----True CFC refrigerants are chemically highly unstable: ------CORRECT ANSWER---------------False Ultraviolet radiation breaks down the CFCs and frees the chlorine ion ------ CORRECT ANSWER---------------True At present there is no restriction on the sale of HFC-134a ------CORRECT ANSWER---------------True Hydrofluorocarbons (HFCs) contributes to which of the following: ------ CORRECT ANSWER---------------global warming
R-134a is flammable at ambient temperatures and atmospheric pressures - -----CORRECT ANSWER---------------False Since ______, it has been illegal to vent substitutes for CFC 3. and HCFC refrigerants: ------CORRECT ANSWER---------------Nov 15, 1995 Which of the following will not react with ozone gas: ------CORRECT ANSWER---------------Fluorine Montreal Protocol is signed in ______ by 23 counties including USA ------ CORRECT ANSWER---------------Sep 1987 The sale of small containers of refrigerant under _______, including the one pound cans, are restricted to only people certified in Section 609 ------ CORRECT ANSWER---------------20 lb Disposable cylinders are manufactured from: ------CORRECT ANSWER----- ----------steel HFC-134a refrigerant has an Ozone Depletion Potential of: ------CORRECT ANSWER---------------0. Ozone layer is present in both Stratosphere and mesosphere layers of earth's atmosphere: ------CORRECT ANSWER---------------False
R-134a refrigerant has low solubility in non-polar lubricants ------CORRECT ANSWER---------------True Average ozone concentration in Earth's atmosphere as a whole is only about ______ parts per million ------CORRECT ANSWER---------------0. Use of Carbon dioxide (R-744) refrigerant results into a ______ efficiency cycle: ------CORRECT ANSWER---------------much lower Recovery cylinders are painted yellow in the shoulder area and _____ down the side ------CORRECT ANSWER---------------12 inches Refrigeration cylinders must be re-tested at ______ intervals ------ CORRECT ANSWER---------------five-year Ozone in the Earth's stratosphere is created by UV light striking _____ molecule ------CORRECT ANSWER---------------Oxygen R- 134a is a corrosive refrigerant: ------CORRECT ANSWER--------------- False
Refrigerants are lighter than air: ------CORRECT ANSWER---------------False Ozone is an unstable molecule: ------CORRECT ANSWER---------------True Chlorine reacts with ozone and converts ozone to: ------CORRECT ANSWER---------------Oxygen Ozone at ground level is a harmful pollutant ------CORRECT ANSWER------ ---------True Skin or eye contact with fluorocarbon refrigerants can result in: ------ CORRECT ANSWER---------------frostbite, irritation, or fatality The sale of small containers of refrigerant under _____., including the one pound cans, are restricted to only people certified in Section 609. ------ CORRECT ANSWER---------------20 lb Most halogenated compounds will decompose at room temperature: ------ CORRECT ANSWER---------------False Section 608 HVAC/R Technicians cannot buy refrigerant in quantities less than _______ ------CORRECT ANSWER---------------20 lbs
Which of the following refrigerants has minimum or zero ozone depletion potential: ------CORRECT ANSWER---------------HFCs HFC-152a MVAC systems are acceptable if MVAC systems must be designed to avoid concentrations in the passenger cabin that are above ______ for more than 15 seconds. ------CORRECT ANSWER--------------- 3.7% _______ is the key agent responsible for stratospheric ozone depletion -----
- CORRECT ANSWER---------------chlorine monoxide The per the AHRI standard unsaturated impurities in HFC-134a to be limited to a maximum level of _______: ------CORRECT ANSWER------------ ---40 ppm Prior to scrapping MVAC equipment the refrigerant must be recovered to a minimum vacuum of _______ of mercury ------CORRECT ANSWER---------- -----4 inches Since ________, it is no longer legal for CFCs to be manufactured or imported into the United States? ------CORRECT ANSWER--------------- January 1, 1996 Since _____, it is illegal to vent substitutes for CFC and HCFC refrigerants? ------CORRECT ANSWER---------------November 15, 1995
Ozone molecule consists of ______ atoms of oxygen? ------CORRECT ANSWER---------------Three CFCs are highly reactive in _____ of atmosphere? ------CORRECT ANSWER---------------Lower level Over the road refrigeration units and R-22 (HCFC) air conditioning, such as that found in buses, also requires Section ______ certification? ------ CORRECT ANSWER--------------- 608 Stratosphere layer consists of about _____ of the available Ozone? ------ CORRECT ANSWER---------------90% Moisture level in Recycled R-12 (CFC-12) that has been directly removed from, and intended to be returned to, a mobile air-conditioning system cannot exceed _______ PPM by weight? ------CORRECT ANSWER---------- ----- 15 Ozone depletion Increase global warming? ------CORRECT ANSWER------- --------True Non-condensables in a refrigeration system result in a _______ discharge pressure? ------CORRECT ANSWER---------------Higher
At high temperaturesCFC-12 can decompose to form _______? ------ CORRECT ANSWER---------------Both options are correct: hydrofluoric acid and hydrochloric acid If a technician is already trained and certified to handle CFC-12, he has to be re-certified to handle HFC-134a? ------CORRECT ANSWER--------------- False The Clean Air Act (CAA) of ______ directs EPA to establish requirements to prevent the release of ozone depleting substances? ------CORRECT ANSWER--------------- 1990 Refrigerants are lighter than the air? ------CORRECT ANSWER--------------- False External Recovery Tanks must be evacuated to ______ of mercury before being put into service? ------CORRECT ANSWER---------------27 inches Disposable Refrigerant Tanks, under _______ must be evacuated before being scrapped? ------CORRECT ANSWER---------------20 pounds ______ of stratospheric chlorine comes from ozone-depleting substances? ------CORRECT ANSWER---------------82% Which of the following refrigerants has high ozone-depletion potential? ------ CORRECT ANSWER---------------CFCs
