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Warning
Mode of Failure Priority Probable Cause Criterion for
Set Count or
Time of
Condition
Patient Circuit
Insufficient
Failed
resistance from
one way valve
10 breath
delay
Low Heart
The heart rate is
Rate
below the rate
limit
2 breaths
delay
Low O
Oxygen
2
concentration is
15 breath
below alarm
delay
setting
Low O
External oxygen
2
Pressure*
supply pressure
is low or
10 seconds
disconnected
after the
detection of O
2
inlet pressure
below 10 PSI
* While "Low O2 Pressure" alarm condition is active the FiO2 field on the Main screen flashes red
and instead of the set FiO2, the measured FiO2 value is displayed.
High
One way valve
has been
removed from
patient circuit or
has deteriorated
(ripped or torn or
missing
membrane)
High
Clinical Condition Heart rate
High (LT) Alarm
set
too
high
No or low oxygen
flow to system
Calibration
required
High variability in
patient breathing
High (LT) Oxygen supply is
disconnected
Low oxygen
pressure
Nebulizer is
activated without
Oxygen supply.
162
Corrective Action
Clearing Alarm
Substitute one
Replace patient
way valve with
circuit
new one
(disposable) or
replace and/or
service one way
valve (re-useable)
Check the patient
exceeds the
condition.
lower alarm
limit for 1
breath
F
O
is higher
Check oxygen
i
2
than alarm
supply
setting for 2
Verify delivered
breaths
O
concentration
2
with an external
analyzer
Refer unit to
qualified service
technician for
calibration
Decrease alarm
settings
Change from
Adaptive Flow™
to fixed manual
flow
N/A
Reconnect or
replace oxygen
Adequate O
2
supply source
pressure is
detected
Ensure proper
regulation of
external oxygen
pressure
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