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Warning
Mode of Failure Priority Probable Cause Criterion for
Set Count or
Time of
Condition
Needs Cal
System needs
(Calibration)
calibration
Over
Internal
Temperature
temperature of
ventilator has
Immediate
exceeded 80°C
Patient
Loss of patient
Disconnect
resistance
detection
2 breaths
delay
Loss of exhaled
volume
Sensor
Blockage,
Disconnect
disconnection or
incorrect
0.5 – 1 second
connection of the
delay
3 tubes --
ventilator enters
Open Loop mode
Mid
Calibrated values
irregularity
High
Cooling vents of
the ventilator are
blocked
High external
heat
Malfunction of
internal cooling
fan
Temperature
sensor failure
High (LT) Patient has been
disconnected
Leak in patient
circuit or in
endotracheal
tube
Improper settings
High
Blockage
tubes
Disconnection or
incorrect
connection of the
3 tubes
164
Corrective Action
Clearing Alarm
qualified
technical
personnel
N/A
Perform full
calibration by
qualified
technician
N/A
Perform Planned
Maintenance
procedures
Verify cooling
vents are clear
and clean
Remove or
protect unit from
external heat
source
Remove unit for
inspection and
servicing by
qualified service
personnel
Reconnection of
Reconnect patient
patient
Correct leak
detected
Correct setting
of
Sensor tubes
Reconnect tubing
detected
Restore normal
(Note: the mode
ventilation mode
must be
Replace patient
manually
circuit
restored if
alarm occurs 3
times in 1
minute)
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