This was a good reason for the Kärcher Futuretech service technicians, Michael Schumacher, Frank Wydra und Dirk Meyer, to book their flights to the West African presidential state. “Carrying out a safety check on the running systems and a repeat training for the operating personnel that had changed in the last couple of years was of high priority,” pointed out Michael Schumacher. In Liberia, which is divided into sectors, 19 Waterclean WTC 2000 UN-W are presently in use. The journeys to the individual systems were a real adventure. The specialists took a helicopter to reach the three other sector centres beside Monrovia: Zwedru, Gbarnga and River Cess. This was followed by a journey in a Jeep taking an average of 3 hours to the locations of the water purification systems. „We drove over potholes that were large enough to lose a car in. Our farm tracks would be called motorways over there,” said Mr Schumacher describing the difficult working conditions.  The Kärcher Futuretech service technicians trained the local operating personnel in every Sector at temperatures between 30 and 35 degree and humidity of nearly 100 %. “The main problem was the lack of maintenance work which had been carried out. With regard to spare parts, there were almost no complaints”, informs the Kärcher Futuretech service trio summarising their mission in the tropical vegetation. Further service missions are foreseen in the next years because nine additional WTC 2000 UN-W water treatment systems are stored in Liberian depots at present. 

Details:
The Waterclean WTC 2000 UN W/A is a containerised water treatment unit for the treatment of surface or well water to drinking water. When operated continuously, the system has a maximum output of 48 m3 drinking water per day (depending on the composition of the raw water).
The containerised Waterclean WTC 2000 UN W/A water treatment system makes the processing of contaminated water into drinking water possible. Contamination can be natural or caused by catastrophes.
The system is very flexible in use, ready to treat fresh water up to highly turbid raw water from open water sources to make drinking water, all with the same machine, and without any adaptations.
The ultra filtration technology which is based on a process which has been introduced world-wide represents the core of the water purification system. The Kärcher plant technology ensures easy operation at the highest process safety level. Chemicals are not required for the ultra-filtration treatment process, i.e. no resulting waste chemicals. Depending on the raw water quality, flocculation chemicals could be useful.
The system consists of two containers:
WTC 2000 UN-W: The first container is the water purification container which houses the pre-treatment, the ultra-filtration and all necessary sub-systems including the controls.
WTC 2000 UN-A: The second container is for the various accessories and houses the different buffer tanks, raw water pumps, spares, water distribution station and a wide range of other items during transport.