作者: Jan Hodgson , Rolf Brück
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摘要: The invention relates to a method for operating device (1) providing liquid additive having at least one suction point (17) removing from tank (2), valve-free conveying line (6) extending the supply unit (3), and displacement pump (4). (4) is configured convey (2) via along wherein has seal (19) of (6), which can be displaced additive. In method, an operation stop determined in step a); b), position (45) inside determined, c), changed if does not correspond intended parking (44).