New challenges Manufacturing diamond tools when the external temperature is around 35°C, along with 75 percent humidity, requires a very powerful, robust, flexible and efficient cooling technology. This is true for both the production facility and the office complex. The new cooling system, including components that were being deployed in India for the first time, is designed to significantly reduce humidity in order to efficiently produce diamond systems in accordance with Hilti’s high quality standards. Plant 4, in Thuringia, Austria, already uses building materials that support low-energy heating and cooling, and the assembly hall is the first industrial building in Austria to be certified according to green building standards. The same systems that are to be used in India are also in use at Plant 4, monitoring control systems and energy. Eugen not only has many years of experience with energy-efficient building designs, but sustainable technologies are also his passion. “By working closely together, we can share experiences and the latest knowledge in this field. In the spirit of give and take, we can all learn and stay on the cutting edge of technology.” During this time, Eugen also learns about the lifestyles and culture of a foreign country. “They want to do great things!,” he told Plant 4 in late July, after returning from his first trip. “My usual way of working was turned upside down. Where we, in certain cases, will use prefabricated build- ing elements, many steps are taken directly on site without certain equipment or standards in India. I was very impressed by the attitude and confidence of the people I spoke to.” Besides having to learn certain technical matters, communication was the biggest challenge for Eugen. “My moderate English skills, coupled with the local Indian dialect and the technical termino- logy, often left me speechless. The AI translator on my smart- phone was a constant companion.” Then it was time, as is the case with many others, for Eugen’s summer vacation. His next trip is scheduled for fall 2023. At this time he’ll be present for the final commissioning of the plant. He is already looking forward to this and emphasizes that this cooperation is really a varied task full of the most dazzling colors. There is also the aspect of continuation training, in the form of specialist and technical training that provides great added value. Overall, it’s a unique life experience. “Thomas’s promise to me was not overstated. Sharing experiences and knowledge is a growth driver, for me as much as for the others.” i When the components are activated, the building’s mass is used to regulate the temperature. In this process, walls, ceilings or floors are fitted with water-bearing pipes, which are utilized for low-energy cooling and heating. The cooling and dehumidification technology in India consists of four large cooling machines, six cooling towers, several heat exchangers, two ventilation centers, over 150 ceiling cooling systems, including fans, and a large number of pumps. All of this is used to ensure that the diamond tools can be produced effi- ciently, and at Hilti’s high level of quality, in the prevailing climate. Plant 4 was founded in 1970 as Hilti’s first production site outside Liechtenstein. Now, approximately 500,000 Hilti tools, including power tools, diamond drilling and direct fastening tools, are assembled there every year. The plant also produces about 800 different machined parts that are used in the assembly process of the various tools. Plant 4 employs approximately 600 people. The groundbreaking ceremony for Plant 11 took place in January 2021 and operations started in August 2023. The ceremonial inauguration is planned for January 2024. The plant will manu- facture diamond saw blades, diamond cup wheels and diamond core bits. The plant is a global center of excellence for cutting, grinding, PU drill bits and SP wall saw blades. Approximately 260 people are employed in India. The plant is seeking the Gold level of certification from the German Sustainable Building Council for its buildings. This would be a first or India. SPOTLIGHT 32 – 33