Beckman Coulter UniCel DxC 600, Instructions For Use Manual, Page: 330 / 498

A13914AF
9-94
Maintenance
As-Needed/As-Required Maintenance
14
Reinstall the ISE module cover.
15
Calibrate the ISE chemistries.
Clean the ISE Flow Cell Using Clenz Solution
The Flow Cell Cleaning procedure helps to maintain the performance of the ISE chemistries. The
procedure should be performed if one or more of the following conditions is seen:
•
A yellow discoloration at, or above, the Flow Cell CO
2
Acid port.
•
A white coating throughout the flow cell.
•
Continuous "CAL REF DRIFT"s which generate suppressed results.
•
Low recovery for successive NA or K results.
•
Excessive calibration failures due to range or span errors.
•
Under extreme situations, control and sample recoveries vary, due to inaccurate calibrations.
•
As instructed by Hotline or Service Engineer.
IMPORTANT
System does not autoprime in maintenance move. After completion a maintenance procedure,
or if a procedure is aborted, exit the Maintenance menu to resume autoprime and return the system to
Standby .
A calibration of ALL flow cell chemistries is required after completion of the cleaning procedure.
Materials Required:
•
Diluted Clenz Solution freshly prepared by adding 10 drops of Clenz Solution Concentrate (PN
664090) to 5 mL Saline.
•
One 5 mL syringe.
•
Flow cell cleaning kit (PN 473181) - optional.
Completely fill the syringe with diluted Clenz Solution. Tap syringe gently to remove any air
bubbles.