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Global Cleaning 2014

| IN PRACTICE | AREA MAINTENANCE Cleaning is part of restoration at Nymphenburg Palace Cascade and statues returned to pristine glory The Grand Cascade in the park of Nymphenburg Palace on the outskirts of Munich was given a restorative cleaning as part of a cultural sponsoring program. Over the years, thick layers of organic matter and calcium had accumulated on the tuffaceous rock and marble panels of the water fountain. The fine sculptures surrounding the cascades, too, were gently cleansed of the traces left by exposure to the elements. “The Grand Cascade in the park of Nymphenburg Palace, with Each cleaning project is preceded by thorough test cleanings to its panels of colorful marble, translucent veils of water and eliminate any risk of damage. voluptuously sculpted figures has always been and always will be one the greatest highlights for our visitors who come from all over High pressure with a gentle touch the world,” explains Klaus Häfner, head restoration officer at the When it came to cleaning the Grand Cascade at Nymphenburg restoration centre of the Bavarian Palace Department in Munich. Palace, the Kärcher team, headed by Gerd Heidrich, primarily used “Unfortunately, the fountain gets dirty very quickly, within a year compact hot water pressure cleaners (the HDS 8/18-4 C series). The thick calcium deposits and algae deposits accumulate on the stone careful interaction of water quantity, pressure, temperature, time, surfaces. Our goal, with the help of Kärcher, was to find a simple spray distance and angle was fully exploited to achieve the optimal and gentle cleaning method that would be as effective as it would result. It also took a gentle touch, however, to prevent any damage be cost-effective.” to the historic monument. Chemicals were taken out of the equation In recent years, Kärcher has conducted numerous cleaning projects because the fountain circuit actually draws on the Würm river. for historic sites and monuments. The Brandenburg Gate, the The particular challenge resulted from the various types of stone Friedrichstadt Palace and the Emperor Wilhelm Memorial Church that were used to construct the fountain. The marble panels are set in Berlin were restored to pristine beauty with Kärcher’s technology in vulcanic tuffaceous rock, which, due to its porous texture, is and know-how – and always in close concert with national heritage very susceptible to humus and growth accumulation. Lichen, foundations, restorers and art historians. mosses, ivy, various weeds and even small bushes had begun to Photos: Kärcher A glimpse of the Grand Cascade in the park of Nymphenburg Palace. Carefully cleaning the colored marble surfaces required several passes. 52 GLOBAL CLEANING | April 2014  


Global Cleaning 2014
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