60 Agilent 7697A Troubleshooting
5 Vial Handling
How the Headspace Sampler Handles Vials
How the HS handles vials is important for understanding
error messages and entries made in the sequence log and
event logs.
In the 12 vial model, the tray (carousel) rotates for loading
samples and when moving sample vials into position. The
sample probe lifter raises and lowers the current vial into
the single- vial oven, and to and from the sampling probe.
In the 111 vial model, the tray resides on top of the unit.
To move a sample vial, the HS uses the gantry, z- axis
assembly, gripper assembly and gripper, shutter, and vial
lifters. See Figure 12.
• The gantry, z- axis assembly, gripper assembly and gripper
are used to move sample vials to and from the barcode
reader and to and from the tray lifter.
• The shutter opens and closes when the HS transfers a vial
to and from the vial oven.
• The lifters inside the HS move vials from the tray and
onto the sampling probe.
• The oven stores vials in a carousel.
Figure 12 Moving parts in the tray
Vial shown
on shutter
Gantry
Z-axis assembly
Gripper inside
Z-axis assembly
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