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Global Cleaning 2014

| IN PRACTICE | AREA MAINTENANCE Gerd Heidrich, who headed the clean-up at Nymphenburg Palace, checks Cleaning the statues around the Grand Cascade: while work is still the cleaning result on a marble panel. Photos: Kärcher underway on the ‘Danube’, ‘Isar’ already shines in pristine beauty. pressure along with less water and a higher temperature (100 °C). smallest specks of dirt. The weathered and coarsely crystalline Several passes with this gentle high-pressure jet worked wonders texture of the white marble was then sealed with a marble paste on the back and torso, arms and legs as well as the head and feet. to prevent any soiling from reoccurring too quickly. After a few hours, the algae and lichen and the rest of the After these two main ‘characters,’ it was the turn of the support- accumulated dirt came off the rough texture of the marble, and ing cast that surrounds the upper section of the Grand Cascade to the statues began to gleam in a light all their own. get a clean-up job. These statues basically received the same treat- The cleaning team had to put in pauses to let the stone dry, and then ment, so that the group now stands out dramatically against the go over some dark spots again. And again. Eventually, the slightest backdrop of the dense forest and becomes visible as soon as you shadow was gone and the statues were as resplendent as on the first enter the park of Nymphenburg Palace. day. Still, the task had been to free the statues from any detrimental This basic cleaning phase showed that the hot water high-pres- dirt while preserving an antique appearance. It turned out that sure cleaner could well become the preferred cleaning system for what made all the difference in achieving this clean but authentic protected monuments when the key parameters are all taken into look was the water temperature and the soaking time. account and applied correctly. With the cleaning exercise a success, repair and restoration work Basic cleaning – the basis for restoration and repairs on the Grand Cascade can begin in earnest. And once that is Those parts that are especially fragile, such as the fingers, toes completed, the waters of the nearby Würm River will again flow nostrils or hair tips, were treated with steam only. Here, the team down the marble staircase of the Grand Cascade and fascinate used the DE 4002 high-performance steam cleaner. The visitors anew from all over the world. combination of soft round brushes, high temperature and minute Niels W. Buhrke, freelance journalist | steam particles proved most effective in dislodging even the markus.targiel@holzmann-medien.de Meet us at ISSA/INTERCLEAN 2014 in Amsterdam We’re looking forward to your visit – Booth 01.639 54 GLOBAL CLEANING | April 2014  


Global Cleaning 2014
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