Why must you always know the distance when a cleaning tool is in a sewer?

Understanding the distance when a cleaning tool is in a sewer is crucial because it allows operators to be aware of the potential obstructions or challenges that may be encountered during the cleaning process. This knowledge enables the operator to anticipate issues such as blockages or changes in pipe diameter, which can affect the efficacy of the cleaning tool and the safety of the operation. By knowing the exact location of obstructions, the operator can take appropriate measures to navigate around them, ensuring a more efficient and safe operation.

Awareness of distance also helps in planning the cleaning approach, determining the need for additional equipment, or making decisions about the best techniques to employ in a given situation. Overall, being informed about the distance helps in executing the cleaning process more effectively and with greater safety.