At what percent full does the switch assembly automatically energize the fuel transfer pump on the product recovery tank in a Type 3 system?

In a Type 3 system, the switch assembly is designed to automatically energize the fuel transfer pump when the product recovery tank reaches a specific level. For this system, the pump activates at 70 percent full. This percentage is specifically calibrated to optimize the transfer of fuel while preventing overflow or unnecessary operation of the pump.

The threshold of 70 percent is ideal as it ensures that the tank has sufficient capacity to handle the incoming fuel and helps maintain operational efficiency. This setting prevents issues such as contamination and ensures that the fuel system operates within its designed parameters, making it crucial for effective maintenance and reliability.

Understanding this specific percentage helps with adhering to safe operating practices and enhances the overall functionality of the fuel system.