Sensor Obstruction; No Blood Detected; Low Voltage - Fresenius Medical Care CRIT-LINE III User Manual

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6.1 Sensor Obstruction

This message appears when the sensor is obstructed or the
blood becomes so dense (e.g. a blood clot) that it absorbs too
much light for a hematocrit measurement in the normal blood
parameter range.
If the patient's hematocrit is below 60 and this warning message appears, the sensor
is probably obstructed with a foreign material that has come between the sensor clip
and the blood chamber.
To correct this problem, remove any foreign materials that could be causing an
obstruction (see Section 8-Cleaning the Sensor Clip).
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6.2 No Blood Detected

This message indicates that an insufficient number of red
blood cells are present in the medium being viewed by the
sensor (e.g., monitoring the saline prime, monitoring when air
bubbles are present in the blood chamber, during a saline
flush etc.) or that the sensor is detached from the CRIT-LINE Blood Chamber.
To correct this condition, make sure that the sensor is firmly locked onto the blood
chamber, and that blood (not saline) is flowing through the blood chamber.
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6.3 Low Voltage

When the Low Voltage message appears, you have two minutes
before the CLM III will automatically shut itself OFF. To
prevent this from happening, immediately attach the CLM III to
a power supply adapter that is plugged into a power outlet.
If the CLM III is running without its power supply adapter, the internal battery
powers the unit. A fully charged battery will operate the CLM III for approximately
two hours before it needs to be recharged (see Section 1-Power Supply).
If the CLM III automatically shuts off after the two minute countdown, it will not
restart with the simple connection of the external power. The power switch must be
turned off for approximately 20 seconds before attempting to turn the unit on again.
This resets the internal electronic battery protection circuitry. If the unit is turned on
with insufficient power at this point, the unit will auto shutdown in two seconds to
protect the battery.
Warning Messages
6-2
ERROR
SENSOR
OBSTRUCTION
ERROR
NO BLOOD
DETECTED
WARNING
LOW VOLTAGE
SHUTDOWN IN
02:00