What is the recommended method to cool an overheated aerial device?

The recommended method to cool an overheated aerial device is through the use of an indirect water hose stream. This approach is effective because it allows water to be applied in a way that can reduce the temperature of the aerial device without directly contacting sensitive components that could be damaged by a direct stream. An indirect stream typically involves dispersing the water in a spray pattern, which cools surfaces and allows for evaporative cooling, reducing the risk of thermal shock to the apparatus.

Using a direct water hose stream may risk causing damage to the equipment or forcing water into sensitive areas, potentially creating electrical hazards or mechanical issues. A chemical fire extinguisher is not suitable for cooling purposes, as it is intended for extinguishing fires rather than dissipating heat. Similarly, a manual fan or blower would not provide sufficient cooling for an overheated aerial device since it may not deliver the necessary heat absorption that water provides. Thus, the indirect water hose stream is the safest and most effective method.