EPA 609 STUDY EXAMS GUIDE ALL QUESTIONS AND
ANSWERS SURE A+
✔✔On _______, the U.S. EPA enacted the provisions of this agreement into regulations
for the United States - ✔✔Aug 1, 1988
✔✔Which of the following refrigerant has a molecular formula is C2H4F2: - ✔✔R-152a
✔✔With the rising cost of refrigerant, the value of the refrigerant stored in a 50-lb.
recovery tank is worth _______ the cost of a recovery tank - ✔✔5x
✔✔R- 134a is a corrosive refrigerant: - ✔✔False
✔✔Used cylinders can be recycled with other scrap metal. - ✔✔True
✔✔Refrigeration cylinders must be re-tested at ______ intervals. - ✔✔Five-year
✔✔Persons servicing MVACs do not have this choice they must be certified as _______
MVAC technicians if they perform the AC service for compensation. - ✔✔Section 609
✔✔Ozone in the Earth's stratosphere is created by UV light striking _____ molecules -
✔✔Oxygen
, ✔✔The AHRI standard now contains the new specification to limit unsaturated
impurities in HFC-134a to a maximum level of ________ - ✔✔40 PPM
✔✔Refrigerants may be mixed in recovery cylinders: - ✔✔False ( NO MIXTURES)
✔✔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. - ✔✔Rises
✔✔Most halogenated compounds will decompose at room temperature: - ✔✔False
✔✔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. - ✔✔3.7%
✔✔The empty refillable refrigerant tank must be evacuated to a minimum vacuum of
______ of mercury - ✔✔27 inches
✔✔The internal pressure of a refrigerant cylinder with one ounce of liquid refrigerant is
_______ full cylinder: - ✔✔exactly the same as
✔✔EPA does require a leak to be repaired prior to recharging a motor vehicle air
conditioning system - ✔✔False
✔✔ A refillable refrigerant cylinder must not be filled above ______ of its full capacity. -
✔✔80%
✔✔Ozone layer absorbs and scatters ________ from the sun - ✔✔Ultraviolet light
✔✔An award of up to ______ may be paid to a person supplying information that leads
to a penalty against a technician who is intentionally venting. - ✔✔$10,000
✔✔Since ________, it is no longer legal for CFCs to be manufactured or imported into
the United States - ✔✔Jan 1, 1996
✔✔R-134a is a chlorine-free refrigerant - ✔✔True
✔✔MVAC systems being disposed must be evacuated to _____ of mercury before
being scrapped - ✔✔4 inches
✔✔Ozone at ground level and at Stratosphere is a harmful pollutant - ✔✔False
ANSWERS SURE A+
✔✔On _______, the U.S. EPA enacted the provisions of this agreement into regulations
for the United States - ✔✔Aug 1, 1988
✔✔Which of the following refrigerant has a molecular formula is C2H4F2: - ✔✔R-152a
✔✔With the rising cost of refrigerant, the value of the refrigerant stored in a 50-lb.
recovery tank is worth _______ the cost of a recovery tank - ✔✔5x
✔✔R- 134a is a corrosive refrigerant: - ✔✔False
✔✔Used cylinders can be recycled with other scrap metal. - ✔✔True
✔✔Refrigeration cylinders must be re-tested at ______ intervals. - ✔✔Five-year
✔✔Persons servicing MVACs do not have this choice they must be certified as _______
MVAC technicians if they perform the AC service for compensation. - ✔✔Section 609
✔✔Ozone in the Earth's stratosphere is created by UV light striking _____ molecules -
✔✔Oxygen
, ✔✔The AHRI standard now contains the new specification to limit unsaturated
impurities in HFC-134a to a maximum level of ________ - ✔✔40 PPM
✔✔Refrigerants may be mixed in recovery cylinders: - ✔✔False ( NO MIXTURES)
✔✔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. - ✔✔Rises
✔✔Most halogenated compounds will decompose at room temperature: - ✔✔False
✔✔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. - ✔✔3.7%
✔✔The empty refillable refrigerant tank must be evacuated to a minimum vacuum of
______ of mercury - ✔✔27 inches
✔✔The internal pressure of a refrigerant cylinder with one ounce of liquid refrigerant is
_______ full cylinder: - ✔✔exactly the same as
✔✔EPA does require a leak to be repaired prior to recharging a motor vehicle air
conditioning system - ✔✔False
✔✔ A refillable refrigerant cylinder must not be filled above ______ of its full capacity. -
✔✔80%
✔✔Ozone layer absorbs and scatters ________ from the sun - ✔✔Ultraviolet light
✔✔An award of up to ______ may be paid to a person supplying information that leads
to a penalty against a technician who is intentionally venting. - ✔✔$10,000
✔✔Since ________, it is no longer legal for CFCs to be manufactured or imported into
the United States - ✔✔Jan 1, 1996
✔✔R-134a is a chlorine-free refrigerant - ✔✔True
✔✔MVAC systems being disposed must be evacuated to _____ of mercury before
being scrapped - ✔✔4 inches
✔✔Ozone at ground level and at Stratosphere is a harmful pollutant - ✔✔False
