42Installation6.3.2 Installation in the base plate (with shaft system)Working steps:£ Apply subbase (e. g. sand) to ground.Insert backflow stop in flow directionand align horizontally.CAUTION: Do not install backflow stop tilted - neither sidewards nor towards front orback. Functional parts (operating seal, emergenc seal, cover etc.) may not be polluted byconstruction material and thus affected in its function.£ Connect pipelines according torespective layout instructions (plastic,steel, cast iron or stoneware), drop inheight = 12 mm.£ Continue subbase (e. g. sand) overpipe upper edge.
