In preparation for a final inspection, what is the recommended action regarding the pump chamber?

Filling the pump chamber is the recommended action in preparation for a final inspection because it allows for an accurate assessment of the system’s functionality and operation. When the pump chamber is filled, it can be checked for proper functioning of all components, such as the pump, floats, and alarms. This ensures the system can handle its intended load and operate as designed under normal conditions. Having the chamber filled also allows inspectors to observe the fluid dynamics and check for proper pump operation, including how well it moves waste and any potential issues with clogging or mechanical failure.

While the other actions may involve aspects of safety or maintenance, they do not contribute to a comprehensive evaluation of the pump chamber's operational state during the inspection. For instance, leaving the pump chamber empty may hinder an inspector from evaluating its performance properly. Inspecting wiring is important for overall system safety but is not specifically related to the operational status of the pump chamber itself. Disconnecting from the power supply may be necessary for safety but does not facilitate a functional inspection. Therefore, filling the pump chamber is crucial for a complete and effective inspection process.