When can the booster pump on an HTST system operate?

The booster pump on a High-Temperature Short-Time (HTST) pasteurization system is designed to ensure an adequate flow of product through the heating process. Its operation is closely tied to the functionality of the timing pump, which is responsible for regulating the duration that the product spends in the heated section of the system. When the timing pump is operational, it indicates that the system is actively processing product, making it necessary for the booster pump to maintain optimal flow rates to ensure effective heat transfer and pasteurization.

This connection is crucial for the efficiency and effectiveness of the pasteurization process, as any interruptions or improper flow can compromise the safety and quality of the pasteurized product. In contrast, if the booster pump were to operate when the heating elements are turned off or in shut-off mode, it could lead to issues such as inadequate heating or difficulty in achieving the necessary pasteurization periods, which are governed by precise timing and flow rates.

The option regarding the product being in the cooling stage does not pertain to the function of the booster pump during the pasteurization phase, as its role is specifically tied to the process of heating and maintaining product flow through the HTST system during active pasteurization.