WEDA AB, Sweden:
An industrial company since 1919. WEDA is a Swedish privately owned corporation with its production plant in Sweden. World-renowned manufacturer of high quality underwater robotic cleaners. The first simple hand cleaner was developed in 1975, and the first automatic B600 type robot was launched on the market in 1981. A long tradition is maintained, since in the 21st century they are among the leading companies in this field – also at the expense of the development of underwater cleaners in cooperation with end users. In recent years, they have specialized in solutions for industrial cleaners for drinking water and waste water tanks, pools in paper, glass, iron, food industry, etc. They also developed robots for the cleaning of cooling pools in nuclear power plants, whose patent was subsequently redeemed by WESTINGHOUSE SERVICE AB. Robots equipped with cameras, lights and complete control of rotating brushes or mills and engines can mechanically remove the sediment even in such hard-to-reach and restricted areas underwater. With these robots 24 hours a day, 7 days a week every year, an artificial lake of 200,000 m2 is cleaned under the tallest building in the world Burj Khalifa in Dubai.
The Weda VR-50 is in many aspects a smaller version of the VR-600. It is specifically designed for smaller reservoirs and reservoirs where access with our larger cleaner is limited due to smaller man holes, limited space between pillars inside the reservoir etc. The Weda VR-50 is remote controlled and equipped with a fixed mounted camera and lights. The pumping is achieved by a 1.3kW submersible drainage pump with a capacity of up to 600 l/m.
The VR-600 is remote controlled and equipped with rotating brushes and a powerful pump that directly pumps out all loosened sediment – without raising turbidity in the reservoir. The VR-600 is equipped with a video camera that facilitates inspection of the inside of the reservoir. The entire cleaning process is documented and the customer receives both a videotape and a written report.
YT-600 can be equipped with cameras and lamps in order to facilitate operation from a van or a control room. To use YT-600 decreases the cleaning costs and does not disturb the distribution. YT-600 has only electrical engines and uses no dangerous oils or chemicals that may damage the reservoir. YT-600 is delivered in the standard version with a 1.5 kilowatt pump and a 630 mm broad nozzle with a built-in fixed assembled brushes.
The YT-800 is an electricity-operated remote controlled submersible robot for cleaning large underwater surfaces, such as the bottom of a sand filter. The powerful pump and wide nozzle make it possible to clean large areas in a relatively short time. The sediment is pumped through a hose to a designated point of discharge, such as a sand treatment station. Traditional cleaning using loading machines, conveyor belts and such require costly investments and manual filter cleaning is very labor intensive. Both methods require that the filter is drained and taken offline. With the YT-800, cleaning can be carried out during full operation.