EPA 608 609 - EPA Refrigerant Handling Certification EPA 609 Practice Test 1 — Questions and Answers
Question 1: Under EPA Section 609, which of the following actions is explicitly prohibited when servicing automotive air conditioning systems?
- Using a refrigerant identifier before beginning service
- Venting refrigerant directly into the atmosphere (Correct answer)
- Recovering refrigerant into an approved container
- Checking system pressure with a manifold gauge set
Correct answer: Venting refrigerant directly into the atmosphere
EPA Section 609 prohibits the knowing venting of refrigerants used in motor vehicle air conditioning systems into the atmosphere. This applies to all refrigerants including R-12, R-134a, and R-1234yf. Technicians must use approved recovery equipment.
Question 2: Which refrigerant was commonly used in automotive A/C systems manufactured before 1994 and is now tightly regulated due to its ozone-depleting potential?
- R-134a
- R-1234yf
- R-22
- R-12 (Correct answer)
Correct answer: R-12
R-12 (CFC-12) was the standard automotive A/C refrigerant before 1994. It is a chlorofluorocarbon (CFC) with high ozone-depleting potential and was phased out under the Montreal Protocol. R-134a replaced it in new vehicles starting in 1994.
Question 3: What is the minimum equipment requirement for a technician performing refrigerant recovery on a motor vehicle A/C system under Section 609?
- A certified recovery machine that meets SAE J2788 or J2810 standards (Correct answer)
- Any portable vacuum pump with a refrigerant storage tank
- A standard manifold gauge set with a recovery bag
- A nitrogen purge kit approved by the refrigerant manufacturer
Correct answer: A certified recovery machine that meets SAE J2788 or J2810 standards
EPA Section 609 requires technicians to use refrigerant recovery equipment that meets SAE standards (J2788 for R-134a or J2810 for R-1234yf). Equipment must be certified to ensure proper refrigerant capture rates and prevent atmospheric release.
Question 4: When recovering R-1234yf from a motor vehicle A/C system, technicians must use equipment that is:
- Compatible with R-134a recovery machines without modification
- Dedicated to R-1234yf and not cross-contaminated with other refrigerants (Correct answer)
- Rated only for high-pressure refrigerants above 500 psi
- Approved for use with both HFC and CFC refrigerants interchangeably
Correct answer: Dedicated to R-1234yf and not cross-contaminated with other refrigerants
R-1234yf requires dedicated recovery equipment because mixing it with R-134a or other refrigerants makes reclamation impossible and can create unsafe conditions. Equipment must be clearly labeled and kept separate to maintain refrigerant purity for reuse or reclamation.
Question 5: Under EPA Section 609, which entity is responsible for ensuring that technicians who purchase refrigerant in containers larger than 2 pounds are properly certified?
- The vehicle manufacturer
- The refrigerant wholesaler or retailer selling the refrigerant (Correct answer)
- The local HVAC licensing board
- The technician's employer or shop owner
Correct answer: The refrigerant wholesaler or retailer selling the refrigerant
EPA regulations require refrigerant wholesalers and retailers to sell containers larger than 2 pounds only to certified technicians. The seller bears responsibility for verifying certification before completing the sale, making point-of-sale verification a key enforcement mechanism.
Question 6: Which of the following best describes the Global Warming Potential (GWP) comparison between R-134a and R-1234yf?
- R-134a has a GWP of about 4, while R-1234yf has a GWP of about 1,430
- R-134a has a GWP of about 1,430, while R-1234yf has a GWP of about 4 (Correct answer)
- Both refrigerants have an identical GWP of approximately 150
- R-1234yf has a higher GWP than R-134a, which is why it is being phased out
Correct answer: R-134a has a GWP of about 1,430, while R-1234yf has a GWP of about 4
R-134a has a Global Warming Potential (GWP) of approximately 1,430, meaning it is 1,430 times more potent than CO2 as a greenhouse gas over 100 years. R-1234yf has a GWP of only about 4, making it far more climate-friendly and driving its adoption in new vehicles under EPA regulations.
EPA 608 609 - EPA Refrigerant Handling Certification EPA 609 Practice Test 1
Under EPA Section 609, which of the following actions is explicitly prohibited when servicing automotive air conditioning systems?