The Schwarze A7 Tornado air sweeper is mounted on a standard production truck chassis, providing the operator with unmatched convenience and comfort. Several options are available, including air conditioning and dual steering.

This air sweeper uses a ‘closed loop’ to accomplish debris pickup from the sweeping head. A portion of the system’s air may be vented-off to increase the sweeper’s vacuum power. The remaining air is recirculated, producing the blast force under the sweeping head.

The sweeper unit is powered by an auxiliary engine mounted on the sweeper frame to the rear of the truck cab. It is fueled from a fuel tank located on the power module. To provide power to the sweeper, the engine propels a fan by use of a drive belt connected to a bearing-mounted drive shaft. The balanced, abrasion-resistant fan draws air from inside the hopper and forces it out of the fan housing. To protect the fan housing from excessive wear, all Schwarze sweepers are equipped with a replaceable rubber liner.

The fan draws air from the hopper and forces it down the pressure hose, then through an opening in the top of the sweeper head, and into the upper/rear pressure chamber. This air is then funneled across the front of the chamber, and out a slot, called the ‘blast orifice.’ As the air is pushed through the blast orifice, it is transformed into a high velocity stream that blasts forward and downward onto the sweeping surface in the sweeping head’s lower/front chamber.

The sheer force of this air loosens debris, then picks it up and pushes it across the lower/front chamber of the sweeping head in a spiraling motion and moves it towards the suction inlet on the vacuum side of the sweeping head. A series of flexible rubber flaps, called ‘curtains,’ are on the front and back of the sweeping head. These curtains, along with the metal skid plates on each end, contain the high velocity air within the sweeping head. The vacuum inside the hopper, caused by the fan’s draw of air, pulls the debris up through the suction hose and into the hopper.

Once inside the hopper, a number of strategically placed water nozzles may be used to decrease the amount of airborne dust. As the dust comes in contact with the water spray, it becomes heavy. The dust and debrisladen air slows down when entering the large volume of the hopper, so heavier objects fall to the hopper bottom. The air is then drawn through a screen in the top of the hopper that removes any remaining lighter objects. Only fine particles of dust remain to be pulled through the screen and into the dust separator in the front of the hopper. As air is pulled from the dust separator by the fan, it develops a spiraling action and centrifugal force throws the remaining fine dust against the walls of the separator, returning it through slots to the hopper bottom. The fan then draws the cleaned air from the dust separator back into the fan housing and the cycle begins again.

For your convenience and safety, the Schwarze A7 Tornado sweeper is controlled via a console located in the cab of the truck. This console allows for remote operation of the hydraulic, dust suppression, and lighting systems, as well as the sweeper’s auxiliary engine. A remote switch panel located on the front of the power module is used to control the dumping. This outside panel safely positions the operator away from the rear of the sweeper, and allows adequate viewing of the dump area.

Your new Schwarze A7 Tornado sweeper may also be factory equipped with a number of options. In addition, some options may be added to the sweeper after leaving the factory. For more details about the many available options, contact a Schwarze Industries sales representative at 1-800-879-7933.