Which of the following is NOT part of maintaining a trap?

Maintaining a trap involves a range of tasks aimed at ensuring proper function and efficiency in a steam system. Replacing cracked buckets, cleaning gasket seating surfaces, and replacing worn valves and seats are all essential maintenance activities that help prevent leaks and maintain the trap's effectiveness in removing condensate and air from the system.

Adjusting the trap size, however, is not generally considered a maintenance action for an existing trap. Traps are designed for specific applications and capacities, and changing the size of the trap would typically require replacing it with a different model rather than simply adjusting it. Proper maintenance focuses on keeping the trap in optimal working condition rather than altering its inherent specifications. This distinction is crucial for ensuring the reliability and efficiency of the steam system.