ICC Commercial Mechanical Practice Exam

Used refrigerants must not be reused in another owner's equipment unless what condition is met?

1. Tested for purity

2. Same equipment location

3. Different equipment location

4. None of these

The correct answer is: Tested for purity

Used refrigerants must not be reused in another owner's equipment unless they have been tested for purity. This is crucial because the purity of refrigerants can significantly affect the efficiency and safety of HVAC systems. Refrigerants that have been contaminated with oil, moisture, or other substances can lead to reduced performance and potential damage to the new system. Testing for purity ensures that the refrigerant meets the necessary standards and specifications required for the equipment it will be used in. It helps to prevent issues such as corrosion or inefficiency that can arise from using impure refrigerants. The other conditions, such as location considerations, do not adequately address the fundamental issue of refrigerant purity and the performance integrity of the HVAC system. Therefore, the necessity of testing for purity is paramount when considering the reuse of refrigerants in different systems.