Bayer HealthCare Rapidlab 800, Operator'S Manual

Page: 321 / 699

The wash did not completely clean the sample path due to low volume or poorly segmented flow.
If a D23 or D24 code also exists, correct these problems first, then
correct the D29.
Perform a wash.
Ensure that the bottle is installed properly. Check the level of Wash/Zero
reagent. If the level is low, replace the reagent as described in Replacing the
Reagent Bottles in Section 3.
Check for cracks or leaks in the sample tubing. If you find cracks or leaks,
replace the sample tubing, as described in Replacing the Sample Tubing in
Section 3.
Check the sample entry components for obstructions and remove them as
described in Removing Obstructions from the Sample Entry Components,
page 4-79.
Check the measurement module for leaks. Check that the sensors are installed
in the correct order and are aligned, the O-rings are in place, and the
spring-loaded latch is closed as described as described in Removing and
Checking the Sensors on page 4-65.
If you see obstructions, remove them as described in Removing Obstructions
from the Measurement Module, page 4-82.
Perform the Valves Test as described on page 4-62 to verify that the wash,
diverter, vent, and wash bypass valves are functioning.
Perform the Pump Functions Test as described on page 4-58.
Check the pump tubing for leaks, flattened areas, or other signs of wear. If
necessary, replace the tubing as described in Replacing the Pump Tubing in
Section 3.
If the D code reappears, contact your Service Representative.