Cedex HiRes - Performing a Cleaning Routine; Interrupting;Terminating a Cleaning Routine; The Prescan Function

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Cedex HiRes Analyzer Operator’s Guide
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6.2 Performing a Cleaning Routine
The different cleaning routines always have the same starting procedure. Ensure that there is always a Cedex
Sample Cup attached to the single sample port or a Cedex Sample Cup placed in the DefaultCup position of
the Multi Sample Tray.
Follow the instructions below:
1
Click on the CLEAN button in the Shortcuts area of the Cedex Control Center or select Cleaning Routines
in the Functions menu. The Cleaning dialog box will open.
2
Click on the appropriate button (e.g., FAST CLEAN) to automatically start the cleaning routine.
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The Cedex HiRes Analyzer is blocked during the cleaning routine, and the duration is continuously displayed
in the Estimated Total Time field.
6.3 Interrupting/Terminating a Cleaning Routine
Use the EMERGENCY STOP button to interrupt the cleaning routine immediately if any leaks are detected in
the Liquid Management system, even in the case of an Ultra Fast Clean being carried out automatically.
The Intensive Clean procedure can be interrupted to shorten the long detergent phase in the flow chamber. Click
on the CANCEL button, which is only activated during the long detergent phase, in the Liquid Management
dialog box.
6.4 The Prescan Function
During a measurement, the sample is injected into the chamber, and the cells are allowed to settle to the bottom
of the flow chamber for a specified amount of time (the sedimentation phase). The system checks the flow
chamber for impurities with a separate scan (Prescan) during the sedimentation phase. If the system detects
impurities in the flow chamber, a message, “Dirt or bubbles detected during Prescan!” appears. The measurement
is completed and results calculated even if this message appears. However, no check appears in the Valid
checkbox below the Image area in the Measurement dialog box for that measurement.
If the message appears, check the Prescan at the end of the measurement to see if the quality of the Prescan is
acceptable or not (see “Viewing the Prescan Image”). If the flow chamber appears to have dirt or impurities, then
perform a Standard Clean before performing a new measurement (see “Performing a Cleaning Routine”). If the
Prescan is acceptable, the measurement results can still be used.
Daily Maintenance and Cleaning Routines
Performing a Cleaning Routine