P/N 53063-30, Manual revision: B
3-5
Ensuring Safe Operation and Patient Care
Inspecting for twists and kinks in the tubing
A careful inspection of the installed harness should be carried out to ensure
that each section is correct installed on the CS5+ device and that all tubes
are free of twists or kinks. It is particularly important that no occlusions are
present in the tube between the bowl and the reinfusion bag when blood is
being pumped out of the bowl. Working the pump against a severe flow
restriction is likely to result in high levels of hemolysis with high levels of
plasma hemoglobin.
Avoiding bowl misalignment
An improperly installed disposable bowl can become misaligned as it spins.
This can create excessive friction, and consequently overheat the bowl
contents. The operator should verify the alignment of the bowl at the time of
installation.
Warning: The operator must not use any bowl which cannot be properly
seated in the centrifuge chuck. Overheating can occur, subsequently lead
to hemolysis and make any blood being processed unsafe for reinfusion.
During operation the operator should interrupt the procedure if an abnor-
mality or noise appears, related to the spinning bowl.
Controlling for overheating
Overheating of the centrifuge can occur as a result of a mechanical or main-
tenance related problem such as defective bearings and might cause
damage to the red blood cells. It is recommended that the operator touch
the centrifuge well to detect any evidence of overheating each time a bowl
is removed at the end of a procedure. If any portion of the upper surface of
the centrifuge chuck is found to be above 37° C (98.6° F), the CS5+ device
should be serviced before further use.
Warning: If during a procedure it is discovered that any portion of the
equipment within proximity of the blood has been significantly overheated,
the processed red blood cells should be regarded as unsafe for reinfusion.
