Final answer:
The question seems related to the field of Engineering, particularly electrical or control systems. After closing a circuit breaker, various operations may commence, but de-energizing the system should not occur. The question lacks sufficient detail to provide a comprehensive answer.
Step-by-step explanation:
The question seems to be related to an engineering procedure, specifically involving electrical or control systems where a circuit breaker is being closed to apply power after a warm-up period. However, the question is incomplete as it does not specify what actions are being taken or what is excluded after closing the circuit breaker. Typically, after a circuit breaker is closed to energize a system, several things will happen except for the de-energizing of the system, as this would be counter-intuitive to the action of closing the breaker.
For instance, when CM1 (Control Mechanism 1 or Circuit Module 1) is energized, it may engage various operational functions like starting up motors, enabling displays, or activating controllers. However, what CM1 will not do is open the circuit breaker, since that would stop the power that was just applied.
Without additional context or specific information on the procedures or the equipment being referred to, it is impossible to provide a comprehensive list of what CM1 does not do. For an accurate answer, the question needs more details about the system and the operation being performed.