Detailed description: After completion of the winched-in-place insertion, both ends of the lining tube entering the manholes are fitted with one packer. These packers are equipped with removable sealing caps for the insertion of the UV light chain as well as well as for the passage of the supply cable and the pull cable already installed in the lining tube at the factory.

After installation and connection of the UV light chain to the supply cable and the pull cable, the lining tube is closed with the sealing caps and then subjected to an internal air pressure of 0.6 bar (or more depending on the ground water level), which expands the lining tube and presses it against the inner wall of the host pipe. After completion of the inflation, the UV light chain is pulled to the starting position. During this process, a pre-inspection of the entire rehabilitation length is performed to insure that the yet not hardened lining tube is placed properly. This inspection is done with an infrared CCTV camera mounted at the UV light chain. Only then are the UV spots ignited from the control stand and continuously pulled at a defined speed through the rehabilitation section. The UV light radiation now starts the process of curing the lining tube. During curing, the surface temperatures of the lining tube are measured to determine the reaction course of the resin. This is done without contact using so-called pyrometers, which are arranged at various points on the UV light chain.

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