R-454B Advanced Puron A2L Refrigerant Test

R-454B Advanced Puron A2L Refrigerant Test

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Question 1 of 22

1. Question
R-454B is MORE or LESS flammable than R-410A
- The Same
- More
- More
- Only more if combined with R-410A
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Question 2 of 22

2. Question
A2L service cylinders are what color or colors?
- Light green gray
- Light green gray with red top
- Yellow
- Yellow and gray
- It doesn't matter the color
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Question 3 of 22

3. Question
A2L recovery cylinders have a rupture disc like A1 cylinders?
- TRUE
- FALSE
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Question 4 of 22

4. Question
What 2 labels are required for cylinders containing A2L refrigerants?
- Flammable
- Toxic
- Compressed Gas
- Explosion
- Burn Hazard
- Corrosive
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Question 5 of 22

5. Question
A2L recovery cylinders are what color or colors?
- Light green gray
- Light green gray with red top
- Yellow
- Yellow and gray
- Gray with a yellow top with a red band
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Question 6 of 22

6. Question
When storing R-454B refrigerant the ambient temperature should not exceed what temperature?
- 110°
- 120°
- 125°
- 150°
- 155°
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Question 7 of 22

7. Question
A technician in a service van/truck can ONLY transport up to 3 cylinders of R-454B at any given time?
- TRUE
- FALSE
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Question 8 of 22

8. Question
What type of fire extinguisher should be onboard when transporting R-454B in a service vehicle?
- Class A
- Class B dry powder
- Class C
- Not required
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Question 9 of 22

9. Question
There should be adequate ventilation to the outside of a service van if the inside temperatures can/will exceed 125°?
- TRUE
- FALSE
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Question 10 of 22

10. Question
It is best to use cylinder restraints any time you are transporting A2L cylinders?
- TRUE
- FALSE
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Question 11 of 22

11. Question
It is Always best to have a dedicated manifold set and hoses for each type of refrigerant you work with to prevent cross-contamination?
- TRUE
- FALSE
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Question 12 of 22

12. Question
A2L/R-454B hose connections (male port) are the same as A1/R-410A, right hand thread?
- TRUE
- FALSE
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Question 13 of 22

13. Question
A2L refrigerants have a stenching agent just like A1 refrigerants?
- TRUE
- FALSE
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Question 14 of 22

14. Question
ALL leak detectors that were compatible with A1 refrigerants will work on A2L refrigerants?
- TRUE
- FALSE
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Question 15 of 22

15. Question
When working in a non ventilated or poorly ventilated space it is always the best idea to have an A2L approved leak detector in use for personal protection?
- TRUE
- FALSE
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Question 16 of 22

16. Question
What is the purpose of using an inert gas such as nitrogen @2-3psig after a recovery and before an evacuation?
- It's really not required
- Serves no purpose
- To help move any trapped moisture and trapped refrigerant
- To help speed up evacuation
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Question 17 of 22

17. Question
What would be the purpose of a double evacuation PRIOR to service?
- To ensure no refrigerant remain in the lines before opening for service
- To remove any moisture
- To remove any oxidation in the lines
- To remove any air
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Question 18 of 22

18. Question
What would be the purpose of a triple evacuation AFTER service?
- To ensure no refrigerant remain in the lines before opening for service
- To remove air and moisture
- To speed up the evacuation process
- To cross-contaminate the system
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Question 19 of 22

19. Question
How long should you leave nitrogen pressurizing the system when leak testing?
- 15 minutes
- 30 minutes
- 45 minutes
- 1 Hour
- 1.5 Hours
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Question 20 of 22

20. Question
It is the installing technicians responsibility to document the total system charge?
- TRUE
- FALSE
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Question 21 of 22

21. Question
The dissipation system can be made up of which components? Check all that apply
- Float switch
- Leak sensor in indoor coil cabinet
- Mitigation board
- Unit blower
- Auto refrigerant shutoff valve
- Emergency stop button
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Question 22 of 22

22. Question
The mitigation board will be found in the discovery process on Infinity/Evolution systems?
- TRUE
- FALSE
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