When is it crucial to check the air-to-liquid ratio in vapor recovery systems?

Checking the air-to-liquid ratio in vapor recovery systems is crucial at the time of installation and during routine maintenance because this ratio directly impacts the system's efficiency and effectiveness in capturing vapor emissions. Properly optimizing the air-to-liquid ratio ensures that the system operates within its designed parameters, minimizing emissions of volatile organic compounds (VOCs) into the atmosphere.

During installation, understanding and adjusting the air-to-liquid ratio helps confirm that the system is set up correctly from the start. Regular maintenance serves as a check to ensure that any wear or changes in operation do not negatively affect the air-to-liquid dynamics, which could lead to increased emissions or system failures. Such regular checks contribute to regulatory compliance, environmental protection, and the overall integrity of the vapor recovery system over time.

In contrast, checking the air-to-liquid ratio only during emergency repairs or when an odor is detected does not promote preventive care or ensure ongoing compliance, and an annual check might not be sufficient depending on the usage and operational conditions of the system. Hence, consistent monitoring at installation and during maintenance is the best practice to assure optimal performance of vapor recovery systems.