FREE STANDARDIZED TESTS AND STUDY GAMES ABOUT

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FREE STANDARDIZED TESTS AND STUDY GAMES ABOUT

EPA 609 PRACTICE

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -50 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: When leak is found in automotive air conditioning system:

Answer:

all of above (EPA does not require leak repair, leak repair is mandatory in some states, and repair leaks whenever possible) Question 2: Recovery cylinders must be:

Answer:

UL or DOT approved Question 3: One kilogram is equal to:

Answer:

2.2 pounds Question 4: Current standard for recovery only equipment is SAE:

Answer:

J2810

Question 5: Definition of recycle:

Answer:

clean refrigerant for reuse by oil separation and passes through moisture absorption device Question 6: When servicing vehicle charged with HFC-134a, you should:

Answer:

use equipment designed for use with HFC-134a Question 7: Refillable cylinders used to transport recovered refrigerants:

Answer:

all of above (must be DOT approved, properly labeled and tagged, along with hydrostatically tested every 5 years) Question 8: Violations of Section 609 of Clean Air Act may result in:

Answer:

all of above ($27,500 fine per violation, loss of technician certification, and appearance in Federal Court) Question 9: Definition of recover:

Answer:

remove refrigerant in any condition, from system, and store it in external container Question 10: Before charging system with recycled refrigerant, refrigerant should be checked

for:

Answer:

non-condensables Question 11: High compression ratio may result in:

Answer:

compressor failure Question 12: Refrigerant oil that is hygroscopic:

Answer:

has high affinity for water

Question 13: Which of following is considered to be good service practice?

Answer:

all of above (repair leaks whenever possible, recover and recycle refrigerant, and determine type of refrigerant in system before recovery) Question 14: Recycling equipment manufactured to SAE standards is capable of cleaning

refrigerants to acceptable level:

Answer:

only if it came from motor vehicle Question 15: When checking cylinder of recycled HFC-134a for non-condensable gases at 70

degrees F, pressure should not exceed:

Answer:

76psig Question 16: One chlorine atom in atmosphere can destroy up to how many ozone molecules?

Answer:

100,000

Question 17: Montreal Protocol is:

Answer:

international treaty controlling CFCs and HCFCs Question 18: Only accurate method of charging is to:

Answer:

weigh refrigerant into system Question 19: Service hoses must have what within 12" (30cm) of end of hose?

Answer:

shut off valves Question 20: Under what conditions may you use disposable cylinder to recover refrigerant?

Answer:

never

Question 21: After initial recovery procedures, technician should:

Answer:

wait 5 minutes to determine if system returns to positive pressure Question 22: Recycling equipment that shares common refrigerant circuit for both CFC-12 and HFC-134a must be certified to what standard?

Answer:

SAE J1770

Question 23: Depletion of ozone layer causes:

Answer:

all of above (skin cancer, eye disease, and crop loss) Question 24: Proper method of charging blended refrigerant is in:

Answer:

liquid phase

Question 25: Why are you not allowed to retrofit R-134a system to R-744?

Answer:

R-744 systems operate at 7 to 10 times higher system pressure than R-134a Question 26: When disposing of empty or near empty disposable cylinder, you should:

Answer:

all of above (attach cylinder to recovery unit, reduce cylinder to vacuum, and mark cylinder empty)

Question 27: Which component of CFC refrigerant is cause of ozone depletion?

Answer:

chlorine Question 28: When retrofitting CFC-12 system to HFC-134a:

Answer:

all of above (replace accumulator/drier with one that contains XH-7 or XH-9 desiccant, affix HFC-134a label to system, and recover any remaining CFC-12)