After a leak repair of a supermarket rack using R-22, when must a follow-up leak verification test be conducted?

The appropriate timeframe for conducting a follow-up leak verification test after a leak repair, specifically in systems using R-22 refrigerant, is within 10 days. This requirement helps ensure that the repair was successful and that there are no remaining leaks in the system. It is crucial to confirm the integrity of the system promptly to prevent further refrigerant loss, which is not only harmful to the environment but also poses a financial risk to the owner through increased energy costs and potential fines for non-compliance with regulations surrounding refrigerant leak management. Prompt verification also helps maintain compliance with environmental regulations, ensuring that proper protocols are followed to minimize refrigerant emissions.