Agilent Technologies 1220 Infinity II LC User Manual page 89

5
Solvent Delivery System Description
Principles of Operation
Figure 27 Principle of the pump
When turned on, the pump runs through an initialization procedure to
determine the upper dead center of the first plunger. The first plunger moves
slowly upwards into the mechanical stop of chamber, and from there it moves
back a predetermined distance. The controller stores this plunger position in
memory. After this initialization, the pump starts operation with the set
1220 Infinity II LC System User Manual 89