How can an overheated aerial device be cooled?

Cooling an overheated aerial device with an indirect water hose stream is a sound practice because it allows for the effective reduction of temperature without causing immediate thermal shock to the equipment. The indirect application helps dissipate heat gradually. This method provides enough distance to safeguard sensitive components and avoids the potential for damaging the device with direct high-pressure water application.

Using an indirect stream reduces the risk of water entering electrical or mechanical assemblies that could exacerbate the issue or create additional hazards. This approach is especially pertinent in firefighting equipment, where sensitive electronics and structural integrity are crucial.

In contrast, other cooling methods can pose risks; for instance, spraying with foam may not provide the necessary cooling effect and is typically used for fire suppression rather than equipment cooling. Shutting down the engine can halt operation, but it does not actively cool the device. Directly applying water could lead to thermal shock or damage sensitive components due to abrupt temperature changes. Thus, using an indirect water hose stream is the most effective and safest method for cooling an overheated aerial device.