First cleaning project in Finland

The Kärcher team of up to 10 people used various cleaning methods in their work. Loose dirt such as paper or cigarette butts are picked up with two sweepers. A larger vacuum sweeper from the municipal sector was used on the larger open areas. A smaller ride-on sweeper was used to clean confined areas. The team also used a battery-powered wet/dry vacuum cleaner, which can be operated independently of a power source, to remove the remaining debris.

Subsequently, the granite and paving stones were cleaned of everyday dirt, spilled beverage residues or chewing gum using various hot water high-pressure cleaners. The dirt is loosened in this method mainly by the high temperature of the water, which is about 80 degrees Celsius on the stone surface. Compared to high-pressure cleaning with cold water and significantly more pressure, this type of cleaning is gentler and also saves time, as the hot water speeds up the process significantly and less pressure is required. Due to the difficult water supply on site, the Kärcher team worked, among other things, with a self-sufficient hot water high-pressure trailer, which, thanks to its own tank for water and diesel and the integrated motor, does not need any electricity or water connection.