What should be done with air conditioning when laying up a train?

When laying up a train, shutting off the air conditioning is the appropriate action to take. This practice is commonly implemented to ensure energy efficiency and to prevent unnecessary wear on the air conditioning equipment during periods when the train is not in operation. Ventilation is typically not required when a train is not being actively used, and keeping the system on could lead to potential issues, such as moisture build-up or bacterial growth, which can arise if the system continues to run without regular use.

Adjusting the air conditioning to maximum may seem like a way to prepare the train for future use, but it does not align with standard layup procedures. Similarly, while checking for proper operation is important during regular maintenance intervals, it is not a necessary action specifically linked to the layup process. Thus, shutting off the air conditioning not only conserves energy but also helps maintain the integrity of the train’s systems during its inactive period.