12-12
CELL-DYN
3000 System Operator’s Manual
9140240E — May 1995
Sample Loader
Chapter 12
CAUTION: If a fault occurs which requires or causes the
Sample Loader to be reinitialized, the operator must remove the
samples that have been processed to avoid accidentally repeating
a sample. Whenever the Sample Loader reinitializes, the tube
rack which was under the tower when the Sample Loader
stopped moves back to the starting position. Processing,
therefore, starts again with the tube in position number one of
that rack.
The operator must pay careful attention to the rack number and tube
position of each sample being processed, particularly when not using bar
code labels and when using the work list. For a complete explanation of
the
Chapter 5, Operating Instructions
Function Sequence
The following sequence is a basic description of the events which occur
from the time that the Sample Loader power is turned ON through the
complete processing cycle. During the cycle, the position of the tube
racks is monitored by a sensor in each corner of the Sample Loader tray.
A fifth sensor detects the non-reflective black label on the end rack.
1.
Each time the Sample Loader is switched ON it completes an
initialization cycle.
2.
When the Sample Loader is initialized and ready, the START key
on the Sample Loader Keyboard flashes and the message AUTO
SAMPLER READY appears in the Data Station bulletin line.
3.
When the START key is pressed, the Sample Loader begins
moving the right rear rack under the tower. As the rack advances,
the sensor at Station 1 searches for a tube. When the sensor detects
a tube, the plunger moves forward to position the tube so the
stopper is pierced near the center. The vent needle punctures the
tube to equilibrate the tube to atmospheric pressure. The rack
advances to Station 2. The second tube in the rack is positioned at
Station 1.
4.
The mixing head moves down until the height sensor senses the
tube at Station 2. Mixing begins and the bar code label is read
simultaneously. If no bar code label is present, the sample is
identified by rack number and tube position or by a work list entry.
(Refer to
Chapter 5, Operating Instructions
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