Which type of valve's micro switch alignment can affect operation upon startup of an HTST pasteurizer?

The divert valve's micro switch alignment is crucial for the proper operation of a High-Temperature Short-Time (HTST) pasteurizer, particularly upon startup. This type of valve is responsible for redirecting the flow of product based on the state of the pasteurization process. If the micro switch, which signals whether the divert valve is open or closed, is misaligned, it can lead to issues such as improper flow regulation, which is essential for achieving the pasteurization temperature and maintaining product safety.

During startup, if the divert valve does not operate correctly due to micro switch alignment issues, there could be delayed or insufficient product movement through the heat exchangers. This can compromise the pasteurization process by allowing unpasteurized milk or other products to enter the pasteurized stream, which is contrary to the safety standards required in pasteurization.

In contrast, while other valves, like the inlet, outlet, and reflux valves, also play important roles in the pasteurization system, their micro switch alignment does not have the same immediate and critical impact on the startup process as that of the divert valve. This is why the divert valve is specifically highlighted in relation to the startup operation of an HTST pasteurizer; its proper function is