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4Ć52
800 Series Operator's Manual
D78 COĆox Module: No (Qualifier)
Problem
Fluid detector 5 (FD5), the CO-ox sample chamber, or both do not detect reagent.
Qualifiers: 7.3 Wash
Solutions
Check the expiration dates and levels of the 7.3/COox Zero and the Wash/Glu
Zero. Ensure that the reagent bottles are installed properly and in the correct
location. If reagents have expired, are low, or are incorrectly installed, replace
the affected reagent. Perform a one-point calibration if the D78 disappears.
Ensure that the CO-ox sample path is connected to the base model. If the
sample connector needs to be inverted, refer to Disconnecting the CO-ox
Sample Path, page 4-92 for instructions.
Check the CO-ox sample path for obstructions. If you see any obstructions,
remove obstructions as described in Removing Obstructions from the CO-ox
Sample Path, page 4-87.
Check the CO-ox sample tubing for leaks or cracks. If you find cracks or leaks,
replace the tubing as described in Replacing the CO-ox Sample Tubing in
Section 3.
Check the gasket in the hemolyzer for cracks and that the gasket is seated
correctly. If necessary, replace or reinstall the gasket as described in Cleaning
the Hemolyzer in Section 3.
Check the CO-ox sample chamber for obstructions and that the gasket is seated
correctly. If necessary, remove obstructions or reinstall the gasket as described
in Cleaning the CO-ox Sample Chamber in Section 3.
Perform a one-point calibration.
Perform the Fluidics Functions Test for the appropriate reagent as described in
Fluidics Functions Test, page 4-56.
Check the CO-ox pump tubing for leaks, flattened areas, or other signs of wear.
Replace the tubing, if necessary, as described in Replacing the CO-ox Pump
Tubing in Section 3.
D78