Understanding Effects of A2L Refrigerants on Tools, Recovery, and Evacuation

Your email address:

Your name:

Start Quiz!

1. The Montreal Protocol was signed in 1987 to:

2. True or False: After recovering refrigerant from an A2L system, you will need to purge it with 100% nitrogen before opening it up for service.

3. Before recovering refrigerant, your recovery cylinders must be:

4. True or False: Recovering refrigerant through a manifold will always be faster than direct recovery.

5. True or False: Using a charging scale isn't necessary for record-keeping or safety purposes.

6. Which of the following is a contaminant in an HVAC system?

7. What is the purpose of vacuum pump oil?

8. True or False: Using the gas ballast can extend the life of your oil.

9. True or False: Evacuation isn't necessary (or even best practice) for systems that have been charged with A2L refrigerants.

10. Which of the following is NOT true of A2L refrigerant cylinders?

Previous

Comments

loading

To continue you need to agree to our terms.

The HVAC School site, podcast and daily tech tips
Made possible by Generous support from