What should be verified regarding the timer off time in a timed dose system?

In a timed dose system, verifying that the timer off time matches the plan specification is critical because these specifications are typically designed based on various factors, including the system's capacity, the design of the septic system, and the anticipated wastewater flow. This matching ensures that the timed dose system operates efficiently and effectively, preventing issues such as overloading the system or improper treatment of sewage.

Plan specifications provide guidelines on how long the system should run and when it should stop to maintain optimal performance and longevity. Following these specifications minimizes the risk of system failure and helps to protect the environment by ensuring that wastewater is treated appropriately before being discharged.

The other options may suggest points of preference or functionality, but they do not hold the same level of importance as adhering to the established plan specifications, which are rooted in engineering and environmental considerations.