Which of the following is an important action after replacing load bank components?

After replacing load bank components, it is crucial to check the functionality of all parts to ensure that the load bank operates safely and effectively. This step verifies that the new components are installed correctly and are working as intended. Functional testing helps identify any issues that may have arisen during the replacement process and ensures that the load bank will perform reliably under load conditions.

While allowing the machine to run idle might seem beneficial for diagnostics, it does not confirm the operational readiness of the new components. Disposing of old components immediately can lead to potential problems if the old parts are needed for further assessments or troubleshooting. Testing connections before powering on is also necessary but comes after confirming the functionality of each component; ensuring that everything works as designed is a top priority to prevent damage or unsafe conditions during operation. Therefore, checking the functionality of all parts is a critical action that guarantees the overall system's reliability and safety.