R410a

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6. Once you complete the exam your results will be displayed instantly. You will be redirected to an area where you can purchase a R-410a Certification Card, Wall Achievement Certificate and a Letter of Completion. You will also receive an email to a link where you can purchase certification material.

7. If you fail the exam read over REPA’s R-410a manual and retake the exam.

8. This is a Voluntary Certification. You must provide proof of Section 608 Type II or Universal Certification to become R-410a Certified.
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1. What is the rupture pressure rating for a R-410A manifold gauge and hose set?
- A. 400 psi working pressure and a 4000 rupture pressure
- B. 800 psi working pressure and a 400 rupture pressure
- C. 800 psi working pressure and a 4000 rupture pressure
- D. 1200 psi working pressure and a 8000 rupture pressure

2. What color coding is the DOT 39 cylinder for 410A refrigerant?
- A. Light Pink
- B. Light Blue
- C. Green
- D. Brown

3. What is the rupture disk rating on a R-410A recovery cylinder?
- A. 100 psig
- B. 200 psi
- C. 400 psig
- D. 650 psig

4. What are some of the common names for R-410A?
- A. Suva 410A
- B. AZ20
- C. Puron
- D. All of the above

5. After what date will manufacturers of R-22 stop making R-22 for use in new equipment?
- A. Nov 15, 1993
- B. Jan 1, 2010
- C. Jan 1, 2012
- D. No date determined

6. After what date will manufacturers of R-22 stop producing R-22 to service existing A/C equipment?
- A. Jan 2020
- B. Feb 2050
- C; Jan 2010
- D. Nov 15 1993

7. Is R-410A considered a “drop-in” substitute fro R-22?
- A. Yes, it can be safely dropped in
- B. Only on certain occasions
- C. No, R-410A is not a drop-in substitute for R-22
- D. None of the above are correct

8. A sample of an HFC refrigerant is:
- A. R-134A
- B R-410A
- C. R-12
- D Both A & B

9. Can you use R-410A to top off a system?
- A. Since R-410A acts as a single refrigerant it can be topped off without fear of fractionation.
- B. R-410A will fractionate since it is only a near azeotrope, so therefore it is best not to use it to top off a system
- C. No
- D. If 410A is used to top off a system, then the individual components will leak at different rates and you will not get a correct P/T reading.

10. When using R-410A, your gauge set must be rated at __________burst pressure and your recovery tanks to be rated for at least _________ .
- A. 2000; 300 psig
- B; 400; 400 psig
- C. 4000; 400 psig
- D. 6000; 800 psig

11. What is the pressure of R-410A at 72 degrees Fahrenheit?
- A. 125 psig
- B. 89 psig
- C. 210 psig
- D. 74.2 psig

12. R-410a is considered:
- A: An azeotropic refrigerant
- B. A Near Azeotrope
- C. A Class I Refrigerant
- D. A Dual Class Refrigerant

13. Cylinder pressures may rise very rapidly with even a minor increase in temperature. For this reason:
- A: Do not fill greater than 80% of the rated capacity
- B. Do not store cylinders in direct sunlight or expose to temperatures above 125 degrees Fahrenheit
- C. Store upright with valve hoods on and valves tightly closed
- D. All of the above

14. One ounce of liquid refrigerant in a recovery cylinder will have the same pressure as:
- A. Liquid R-12
- B. Many ounces of the same refrigerant
- C. Vapor R R-12 refrigerant
- D. Non-Condensables

15. What is the color coding of a 410A Recovery cylinder?
- A. Green
- B. Grey
- C. Yellow with grey shoulder and hood
- D. Grey body with yellow shoulder and hood

16. A R-410A recovery cylinder must meet what DOT safety requirement?
- A. 4BA400 or 4BW400
- B 400W DOT
- C. 1400
- D. 50lbs400

17. What is the required level of evacuation for a system containing 100 pounds of R-410A when using recovery equipment manufactured after 11/15/93?
- A. 0
- B 4. psig
- C 10 psig
- D. 15 psig

18. What is the required level of evacuation for a system containing 351 pounds of R-410A if using recovery equipment manufactured after 11/15/93?
- A. 0
- B 4. psig
- C 10 psig
- D. 15 psig

19. What is the required level of evacuation for a system containing 202 pounds of R-410a when using recovery or recycling equipment manufactured before 11/15/93?
- A. 0
- B 4. psig
- C 10 psig
- D. 15 psig

20. When servicing a household refrigerator that contains R-410, and you are using recovery equipment manufactured before November 15, 1993, how much refrigerant needs to be recovered?
- A. 50% of the refrigerant
- B. 60% of the refrigerant
- C. 80% of the refrigerant
- D. Whatever comes out when you achieve a 4” mercury vacuum

21. When servicing a household refrigerator that contains R-410, and you are using recovery equipment manufactured after November 15, 1993, how much refrigerant needs to be recovered?
- A. 90% of the refrigerant
- B. 80% of the refrigerant
- C. 75% of the refrigerant
- D. 50% of the refrigerant

22. Never fill a refillable cylinder more than _________ of its rated capacity.
- A. 100%
- B. 80%
- C. 75%
- D. 50%

23. Always use ______________ when handing refrigerants.
- A. Goggles
- B Butyl lined gloves
- C. Respirator
- D Both A & B

24. In the event of a large release of refrigerant in an enclosed area:
- A. Turn on the fan and wait for the air to clear
- B. Run for your respirator
- C. Vacate and ventilate the spill area
- D. Do nothing; it will dissipate

25. When using R-410A, you must:
- A. Use components such as filter driers, expansion valves, etc., specified for use with R-410A
- B. Use a manifold gauge and hose set with a 800 psi working pressure and a 4000 psi rupture pressure
- C. Use equipment such as service, recovery equipment and cylinders, etc. that has been engineered to be used with the higher pressures of R-410A
- D. All of the above
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R410a

CAREFULLY READY THE FOLLOWING

INSTRUCTIONS FOR TAKING THE EXAM:

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