Bayer HealthCare Rapidlab 800 - Manual (Page 299)

4Ć15 Troubleshooting the System
D2 Excessive Drift:
Glu Lac
Problem
Sensor drift is beyond predefined limits during a one-point or a two-point calibration.
Qualifiers: Glu Lac
Solutions
NOTE:ĄĂ If D codes also exist for reagent problems such as D23, D24, D29, or
D50, correct these problems first, then correct this D code.
Check the expiration dates and the levels of the reagents. 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 reagents,
and perform a two-point calibration.
Check that the biosensors are installed in the correct order and are aligned, the
O-rings are in place, and the spring-loaded latch is closed as described in
Removing and Checking the Sensors on page 4-65.
Check the biosensor contacts and measurement block for salt buildup. Check
behind the biosensor for fluid leaks that can come from the reference sensor. If
salt or leaks are present, clean the sensors with reagent water, dry, and perform
a two-point calibration after reinstalling the biosensors.
Perform the Measurement Test for the affected biosensor as described in
Measurement Test, page 4-70.
Check the diverter valve to verify that the valve is working. Perform the Valve
Test as described on page 4-62.
If the glucose or lactate biosensors have been on the system less than 1 day, the
sensors may require additional time to hydrate the membranes.
Replace the glucose or lactate biosensor as described in Replacing the Glucose
and Lactate Biosensors in Section 3.
D2