 He also instigated a restoration which was completed in 1862, partly thanks to a 40,000 Taler donation from the businessman Johann Heinrich Richartz (1795–1861), who had already set up the Wallraf-Richartz-Museum on the former site of the monastery buildings.A new Romanus Seifert & Sohn organ was installed in 1997, with 44 registers, divided into three manuals and pedals, with mechanical trackers and electrical registers.The expression pedal is equipped with Barker levers.