When a type 4 system is placed in the loop flush mode, what action does the solenoid on the 136AF-5B flush valve perform?

In a type 4 system, when it is set to loop flush mode, the action of the solenoid on the 136AF-5B flush valve is crucial for ensuring proper system operation. In this mode, the solenoid de-energizes, which leads to the opening of the main flush valve. This action allows for the flushing of the system, helping to remove any contaminants or sediment that may have accumulated in the loop.

The function of the solenoid in this context is specifically designed to facilitate the flushing process. When the solenoid is energized, it typically performs a different function, such as keeping the valve closed under normal operating conditions. However, upon de-energization, the valve opens, enabling the flow of fluid necessary for flushing the system effectively.

Understanding the operation of the solenoid in flush mode is essential as it reflects the broader principles of valve operations in water and fuel systems. This knowledge is critical for maintenance personnel who need to troubleshoot and ensure the integrity of the water and fuel systems.