Before the connection is released, the line must be free of pressure, and the area of the retaining element must be free of dirt. Feed or return lines Step 1 Spread the retaining element of the quick connect [...] protective clothing for the high-voltage range. To be observed when assembling the lines The assembly of the lines must be carried out by qualified technicians in accordance with the specifications of this [...] connecting the quick connect system, ensure that the connection contour, especially the bore, is thoroughly checked. The connection contour must be clean and not have any damage or dirt. The O-ring must