User`s guide

Troubleshooting
357
and clean the outside of the tube. Ensure there is
no adhesive material or residual sample on the
outside of the tube before inserting it into the
carousel. Touch the Tools button, press Reset in
the menu and answer Yes to the pop-up
question. The instrument will reset itself and
clear the fault. Press the Start button on the
display to start the analyses.
Action: Do not use tubes that are not specifically
identified for use with an automated thermal
desorber. Using other types of tubes may result
in unreliable analysis data or damage to the
instrument.
Fault: Tube Unload Failure
Cause: The ATD could not return the sample tube onto the
carousel.
Action: If you have placed a new tube into the location,
from which a tube was removed by the
instrument, you must remove it. Press Stop and
rotate the carousel to gain access to the tube
location and remove the tube. Touch the Tools
button, press Reset in the menu and answer Ye s
to the pop-up question. The instrument will
reset itself and clear the fault. Press the Start
button on the display to start the analyses.
Cause: If there has been a power failure it is possible that a
tube has slipped in the gripper arm and cannot be re-
capped.
Action: Turn the ATD off and disconnect the power
cord from the AC mains. Slide the tube from the
gripper arm and remove the caps from the
decapping mechanism. Turn on the ATD. You
may need to update the tube range on the Run
tab to exclude the tubes that have already been
run. Press the Start button to continue your
analyses.
Fault: Could Not Index Carousel
Cause: The carousel cannot rotate freely.