What might cause the timing pump not to run and the pasteurization temperature recorder controller to show no lights on startup?

The timing pump not running and the pasteurization temperature recorder controller showing no lights on startup could be caused by the micro switch on the leak detector valve being misaligned. In pasteurization systems, safety mechanisms, such as micro switches, ensure that the system operates correctly and safely. If the micro switch is misaligned, it may fail to detect the proper operational status, preventing the timing pump from activating. This, in turn, would lead to the controller not receiving any signals to power on, resulting in no lights showing at startup.

Other options present scenarios that may affect system operation but do not directly relate to the timing pump and the recorder's inability to function during startup. For example, a faulty pasteurization temperature recorder could lead to measurement issues, but it would not inherently stop the entire system from powering on. Similarly, if the system is leaking, it could create operational issues, yet it does not directly indicate a failure of the timing pump or the recorder to activate. Lastly, asserting that the timing pump is not connected may suggest electrical issues, but it would not involve the misalignment and safety mechanisms that the micro switch provides.