R410a

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5. This is an open book Exam. However you may not use the aid of online search engines or the help of others when taking the exam. Download and print REPA's Free R-410a Manual before taking the exam.

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. Good Luck!
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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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INSTRUCTIONS FOR TAKING THE EXAM:

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