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Service manual

4.2.3. Adjustment of the positioning of the operating arm

This screen makes it possible to adjust the horizontal positioning (X, Y) of the arm. The arm housing must be

removed to see the position of the needle. Before making the adjustments, visually check the verticality of the

needle. If necessary, carefully straighten it up ensuring you do not damage it. On the screen, select the point

at which you wish to adjust the horizontal positioning. On pressing the Adjust button the arm initialises and

positions itself over said point. The technician has buttons to move the arm step by step over the horizontal

plain (X, Y) and vertically (Z). The arm can also be moved introducing a certain number of absolute movement

steps. These absolute movements of the arm must be made with the needle at its highest position so as not to

damage it (coordinate 0). The technician must lower the needle to the adjustment point and adjust its horizontal

position. When the position is satisfactory, save the current coordinates (X, Y) by pressing the Store button.

Pressing the Cancel button keeps the last adjustment values stored. Pressing the Restore button restores the

initial screen input values. At all times, the screen shows the current coordinates of the arm for the selected

point, the last coordinates stored and the initial screen input coordinates, as additional information for the te-

chnician. The technician may repeat the procedure to adjust the positioning of the arm at the different possible

adjustment points. These points are as follows:

(1) Origin. Vertex of the self-centering plate of the needle.

(2) Rack tray Adjust point located in the right part at rear of the tray

(3) Washing station. Centre of front part of washing station.

(4) Reactions rotor. Dispensing point on the rotor reactions cover.

(5) Zmax (on tray reference) The same point of rack tray

If you select the point of origin, automatic adjustment is possible in this position by pressing an AutoAdjustment

button (the process can take around 3 minutes).

4.2.3.1 Adjustment of X, Y and Z position for reagent and pediatric racks

Note: the pediatric rack is a 15 diameter rack with pediatric adapters and wells

This process is used to adjust each rack individually in the three coordinates, X, Y and Z as much for pediatric

as for reagent racks. For that, each rack of the tray will be adjusted to positions 1 and 12 for pediatric racks

and 1 and 10 for the reagent ones.

biosystems A15 User Manual

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