Bayer HealthCare Rapidlab 800, Operator'S Manual

Page: 392 / 699

Sample path is obstructed The fluid flow is insufficient due to obstructions in the
sample path.
1. Check for obstructions in the sample entry
components as described in Removing Obstructions
from the Sample Entry Components, page 4-79.
2. Check for obstructions in the measurement module
as described in Removing Obstructions from the
Measurement Module, page 4-82.
3. Check for obstructions in the measurement module
tubing and waste outlets.
4. Check for obstructions in the CO-ox module as
described in Removing Obstructions from the
CO-ox Sample Path, page 4-87.
5. Inspect all connections and fittings for obstructions
and leaks.
6. Verify that all sensor O-rings and sensors are
correctly aligned with the sample path and that the
O-rings are not deteriorated.
NOTE:
The reference sensor has two O-rings.
7. Test the sample pump flow rate as described in
Pump Functions Test, page 4-58, and verify that the
pump is operating correctly.
Air bubbles in fluid in
sample path 1. Check your sampling technique as described in
Sample Collection Devices and Anticoagulants in
Section 1.
2. Verify that all sensor O-rings and sensors are
correctly aligned with the sample path and that the
O-rings are not deteriorated.
NOTE:
The reference sensor has two O-rings.
3. Check the sample probe and the sample tubing for
damage or incorrect installation.
4. Test the reagent and sample pump flow rates as
described in Pump Functions Test, page 4-58, and
verify that the pumps are operating correctly.