Agilent Technologies Varian CP-8400 Operator's Manual page 21

To start the Vial 0 (or Vial 1) calibration, make certain a vial with the
same form factor and cap as the ones you will be using for your analyses
is placed in the 0 position of the carrousel (or the Vial 1 position of the
CP-8410). Press the Start Calib. softkey located in the lower left corner
of the display. Use the cursor keys located at the upper right corner of
the CP-3800 keypad to highlight an action associated with one of the
AutoSampler components (tower, syringe or carrousel). Once the
appropriate action is highlighted, pressing the Move softkey will cause
the selected action to be completed for the associated component.
NOTE: One basic rule associated with this calibration concerns rotation
of the tower and carrousel; to assure consistent operation, always
approach the final calibration position with clockwise movements. To
help facilitate this rule, the carrousel will backup 10 steps when a
counterclockwise action is selected but will move one step per Move
softkey action when a clockwise tower rotation is selected.
Calibrating the Vial 0 (or Vial 1) position involves manipulating the
positions of three different components. The object of the calibration is to
position the syringe exactly over the center of the sampling target area of
the vial. Upon starting the calibration procedure, the CP-8400/8410 will
rotate the tower, rotate the carrousel, and lower the syringe sled to the
approximate location of Vial 0 (or Vial 1 if CP-8410). After the
CP-8400/8410 has found the approximate Vial 0 (or Vial 1) position,
visually check that the syringe sled is not resting on the vial top. If it is,
scroll down to the Syringe selection and highlight the Up action. Press
the Move softkey until the syringe sled is clear of the vial top by
approximately 1 mm. Start the calibration process by adjusting the tower
position
Next, for CP-8400 users, set the carrousel position. You may have to
switch back and forth between the tower and carrousel one or more
times to determine the optimum rotational positions. Finally, scroll to the
Syringe selection and adjust the syringe sled height so that the needle is
just barely above the vial cap (You should be able to see about a paper's
thickness of space between the syringe sled needle guide and the top of
the vial cap. The penetration depth into the vial is measured from the
bottom of the needle guide, so this height will give you optimum
penetration depth.)
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