WORKING AT HEIGHT
to the viewing platform at a pressure of 25 bar and there it was collected in three 1,000 litre tanks which were used to feed the HDS 12/18-4 S hot water high-pressure cleaners. The water passed through 120-metre-long high- pressure hoses to the spray lances used by the operators.
The tower, with its gold-coated flame at the top, was opened in 1975 and is a symbol of Indonesia's independence. The project marked the launch of a series of further cleaning initiatives by the city of Jakarta, initiatives which will be supported by Kärcher.
New Look For
American Presidents Back in the summer of 2005 Kärcher teamed up with the National Park Service to clean the presidents’ heads on Mount Rushmore in South Dakota. The aim of the restorative project was to remove lichen, algae, moss and other organic stains that could damage the underlying rock in the long term by way of corrosion. This first cleaning project on Mount Rushmore began on Independence Day (July 4th) and was completed two months later, in early August.
Cleaning was carried out purely with water, without any chemical supplements. Five diesel-powered Kärcher HDS 1000 DE hot water pressure washers sprayed the water on to the granite surfaces via rotary nozzles that combine the cleaning power of a pencil jet with
Second Clean For Symbol
Of Independence More recently, in May of last year, Kärcher carried out its second deep clean of the Indonesian national monument, Monumen Nasional, known as Monas for short, in Jakarta. They had previously removed dangling soil from the 132-metre-high obelisk back in 1992.
The 20-strong German-Indonesian cleaning team divided the project into two phases: first, an HDS 6/14 hot water high-pressure cleaner was used to remove deposits from the base of
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the higher area coverage of a fan jet. Water temperatures around boiling point then delayed any recurrence of growth on the rock sculptures. Following cleaning trials at the end of April, two independent scientific experts deemed this process to be the most effective and most gentle on the material.
Sculptor Gutzon Borglum’s giant heads of American Presidents George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln were carved between 1927 and 1941. They clock in at about 60ft high and, along with the Statue of Liberty in New York, the sculpture is one of the best known monuments in the United States. It is located near Rapid City in South Dakota and is managed by the National Park Service, together with the museums and other facilities.
the monument. The dislodged dirt was then picked up when a BD 530 Ep scrubber dryer was used to clean the ground, leaving the surface dry and fit to walk on.
In the second stage, two experienced cleaning experts went up high. Ropes were used to haul the technicians up to the visitors' platform 115 metres above ground level. Hot water jets were used to gently remove emission soiling such as soot, grease and oil from the marble surface – entirely without the use of cleaning agents. The hot water required for this was first pumped up
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