Mounted to the side of the locomotive, this air conditioning system (ACU) supplies 8kW cooling to ensure a cabin temperature of 22 – 25°C max in a 45°C ambient, provided the cabin is thermally insulated. The aircon is a single evaporator design with a single horizontal scroll compressor.

The ACU system does not restrict the standard operational features of the locomotive. The system is designed to be removed from the locomotive within 10 minutes with the use of an overhead crane. This ensures quick turnaround times when the system needs to be replaced.

The electrical connections, looms between the aircon, power units, electronic control panels and electrical control gear are designed and selected for operation in military environments, which include adverse temperatures as well as severe shock and vibration.

The aircon is hard wired with no complex electronics or PC boards. The system can only be switched on and off with 2 fan speed options. The system can be supplied with an electronic controller which allows Bluetooth login interface and monitoring via smartphone app and/or laptop.

Installation of the unit requires substantial modifications, and so it is suggested that the system is designed with the correct interfaces in place. SME can also “repackage” this system in an enclosure which would fit any client’s requirements.