624074/07 10-19
Exhalation
obstructed
High priority.
Proximal airway pressure does
not drop during exhalation.
Observe the patient.
Inspect the expiratory limb
for occlusion.
Inspect the expiratory valve
membrane and cover.
Replace the expiratory valve
membrane and cover.
Inspect the flow sensor
tubes for occlusion.
Adjust breath timing con-
trols to increase the expira-
tory time.
Low
ExpMinVol
alarm off
Low priority.
The operator-adjustable low Exp-
MinVol alarm is set to off.
For information only.
Expiratory
valve cali-
bration
needed
Low priority.
The ventilator does not have cor-
rect expiratory valve calibration
data
Have the ventilator ser-
viced.
External
battery
empty
Low priority.
The extended battery pack is
depleted. The device is running
on its internal battery.
If desired, replace depleted
battery pack with a spare,
charged battery pack. Oth-
erwise, wait for extended
battery pack to charge.
If extended battery pack is
not fully charged after 7
hours, install new extended
battery pack.
FiO
2
oscilla-
tion
Medium priority. Large up and
down changes of FiO
2
in a short
period of time.
Check patient.
Set PEEP and oxygen to
manual control.
Flow Sensor
calibration
canceled
Operator Message. The user can-
celed the flow sensor calibration.
No action required.
Table 10-2. Alarms and other messages
Alarm Definition Complete these actions
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