Abstract: An automatic or semi-automatic Clean-In-Place system and method of using same. An automatic or semi-automatic Clean-In-Place system (1;1a;1b) serves for cleaning at least one dispensing line (6a,6b,6c,6d,6e,6f;6a?,6b?,6c?;6a?,6b?,6c?) between a take-off station (2) and a dispensing station (3) with dispensers (5a,5b,5c,5d,5e,5f) at the end of dispensing lines (6a,6b,6c,6d,6e,6f;6a?,6b?,6c?;6a?,6b?,6c?) and is operated by an electronic control system (17). A source of ozonated water (10) provides ozonated water through ozonated water conduit (12) via an ozonated water valve (OWV), and cleaning water (CW) is provide through water conduit (15) via a water valve (WV). A main conduit (14) in turns receives water from the water conduit (15) and ozonated water from the ozonated water conduit (12). The main conduit (14) extends into serially arranged flow distribution units (13;13.2;13.2;13?,13.1?,13.2?;13?,13.1,13.2?), each comprising serially arranged branch conduits (C1,C2;C1.1,C2.1;C1.2;C2.