How the System Works The bus travels through the lane and stops with the front door positioned at the bellows. Both the front and rear doors of the bus are opened. The driver pushes the start button located on the front of the bellows, which then extends into position at the bus door. The blower damper is opened, an atomizing mist is activated and a strong airflow is pulled by a 50HP blower through the cyclone duct, bellows and bus. The driver takes the airgun and hose to the rear of the bus and begins to blow deodorized air onto the floor and seats, getting dust and debris airborne. The dust and debris is then pulled through the bus by the airflow, into the bellows through the duct and into the cyclone separator. The dust and debris is then separated from the air stream and deposited into a trash receptacle. When the bus is clean the driver pushes the stop button; the bellows retracts and the damper closes.