Biomed
Functions
Section 4: Biomed Functions
47
Upstream Sensor On/O
e Upstream Occlusion Sensor screen can be set to On or O. If this
screen is set to On, and an upstream occlusion (between pump and uid
container) is detected, an alarm will sound, delivery will stop, and the
display will show “Upstream Occlusion.”
WARNING: When the Upstream Occlusion Sensor is turned o, the
pump will not detect occlusions upstream (between pump and uid
container). Periodically inspect the uid container for decreasing
volume, inspect the uid path for kinks, a closed clamp, or other up-
stream occlusions. Upstream occlusions could result in under- or non-
delivery of medications. If undetected, these occlusions could result in
death or serious injury to the patient.
1. With the pump stopped and in LL0, access Biomed Functions.
(Refer to the beginning of the Biomed Functions section for instruc-
tions on how to access Biomed Functions.)
2. Press
„
until “Upstream Sensor” appears.
3. Press
´
or
Î
to select O or On.
4. Press
¤
to enter the change.
e Upstream Occlusion Sensor will also detect a partial occlusion. If the
partial occlusion, or restriction in ow is sucient to activate the sensor, and
then clears, the pump will show a brief screen message “Upstream Occlu-
sion” and the pump will beep to coincide with the screen message. An insis-
tent alarm will not occur if the occlusion clears itself. Continued restriction
in ow causing repeated “Upstream Occlusion” messages that subsequently
clear themselves can lead to under-delivery of medication, which could be
up to 10% of the set delivery rate. e Upstream Occlusion events will be
recorded in the pump event history as “Upstream Occlusion” and “Alarm
Complete” when the occlusion is cleared.
e soware automatically turns o the Upstream Occlusion Sensor dur-
ing the last 6% of the reservoir volume. is is to take into account the ± 6%
system delivery accuracy and avoid nuisance alarms.
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