CA-500 Series S/M 2-3 Revised December 2001 8
(c) Probe Rinsing after Sample Aspiration
The probe moves to the Probe Rinse Cup (inside). The Probe Rinse Cup (inside) valve opens to
empty rinse solution from the probe.
Then the probe moves to the Probe Rinse Cup (outside) to remove a drop from the probe tip.
(d) Reagent Aspiration and Dispensing
The probe, which stops for cleaning after sample aspiration, moves to the reagent rack to aspirate,
descends into the reagent vial, detects the liquid surface, and then the volumetric syringe descends
to aspirate the reagent.
At this time, the solenoid valves does not function (closed).
When dispensing, the probe moves to the heated reaction tube, catches that reaction tube, then
moves to the dispensing position, and dispenses the heated reagent into the reaction tube.
After dispensing, the mixing motor mixes the sample and reagent in the tube, and sets it in the
detecting well.
(e) Rinsing after Reagent Dispensing and Mixing
After reagent dispensing and mixing, the probe moves to the Probe Rinse Cup (inside). The Probe
Rinse Cup (inside) valve opens to flow rinse solution out of the probe.
Next, the probe moves to the Probe Rinse Cup (outside), the probe tip touches the liquid, and then a
drop adhering on its tip is removed. The probe then moves to rinse solution and aspirates CACLEAN
I. After aspiration, it moves to the Probe Rinse Cup (inside), and the probe valve opens to feed out
rinse solution. At this time, the syringe piston moves to dispense the rinse solution.
The probe moves to the Probe Rinse Cup (outside), and both the Probe Rinse Cup valve and the
valve on probe open to rinse the probe.
(f) Probe Rinsing
The Rinse Probe key causes the probe to move to Probe Rinse Cup (outside) and detect the syringe
home position. Then the probe moves into the Probe Rinse Cup (inside), and any liquid remaining on
the probe tip is removed. After that, the probe moves to rinse solution and aspirates CACLEAN I.
After aspiration, the probe aspirates rinse solution 2 minutes to clean the its inside.
Now the probe moves to the Probe Rinse Cup (inside) and causes the probe valve to open and feed
out rinse solution. At this time, the syringe piston moves to dispense the rinse solution.
Next, the probe moves to the Probe Rinse Cup (outside), and both the Probe Rinse Cup (outside)
valve and the valve on probe open to rinse the probe.
After rinsing, the probe returns to the home position.
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