81
Troubleshooting and Test Functions
Change Needle
Change Needle
WARNING For needle exchange, the needle arm moves down automatically when
the front cover is removed. To avoid personal injury, keep fingers away
from the needle area during needle movement.
The change-needle/seat function moves the safety flap out of position, and
positions the needle for easy exchange and alignment of the needle and
needle seat.
User Interface
The commands for the ChemStation and Control Module (different names for
the commands in the Control Module are shown in brackets) are:
NOTE The autosampler front cover must be in place when “Start” and “End” are
selected.
Start (Change) Moves the safety flap away from the needle, and positions
the needle approximately 15 mm above the needle seat.
Needle Up (Up
Arrow) Press function key couple of times to move the needle arm
up in 2 mm steps.
Needle Down
(Down Arrow) Press function key couple of times to move the needle arm
down in 2 mm steps. The lowest position (“end position”)
is used to align the needle at the correct position in the
needle seat.
End (Done) Completes the procedure by moving the gripper arm to the
home position, and releasing the safety flap.
Using the Change Needle Function
1 Ensure the front cover is installed.
2 Select “Start” (“Change”) to move the needle arm to the maintenance position.
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