What should not be necessary during maintenance of drain lines?

During the maintenance of drain lines, cutting the drain line should not be necessary as a routine practice. Maintenance typically involves inspections, cleaning, and repairs that can often be performed without extensive alterations to the existing system. Regular maintenance procedures are designed to prevent clogs and backups by using tools such as snakes or hydro jetting, which can clear blockages without the need for cutting into the pipes.

Draining the system before maintenance can be important to ensure safety and cleanliness, while adding chemical agents might be required to address specific issues like clogs or buildup. Creating additional access points may enhance future maintenance efforts but is not a standard requirement for regular maintenance. Thus, cutting the drain line is generally an action reserved for more severe repairs or when dealing with irreparable damage, making it an unnecessary step for routine maintenance tasks.