V-0-02-EN
Impala User manual
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Alarm system
Alarm system
Alarm
Cause/Ventilator Response
Corrective Action
High rate Adjustment of Max the total of
breath per minute too low
Re-adjust Max the total of breath per minute
Adjustment of the inspiratory sensi-
tivity level too low
Adjust trigger sensitivity according to the pa-
tient
Patient hyperventilating
Silence the alarm and call for a medical team if
the symptoms persist
Check for auto-cycling and adjust inspiratory
sensitivity, manage leaks or drain condensation
from patient circuit
Defective flow sensor
Have a qualified technician replace the defective
component(s) and call your customer service
representative
Low rate
Adjustment of Max the total of
breath per minute too high
Re-adjust Max the total of breath per minute
Adjustment of the inspiratory sensi-
tivity level too high
Adjust trigger sensitivity according to the pa-
tient
Defective flow sensor
Have a qualified technician replace the defective
component(s) and call your customer service
representative
High Vti
Adjustment of the Max Vti level too
low (for PSV, CPAP, A/C PC, SIMV
PC, SIMV VC modes).
Note: Always consult the clinical before chang-
ing PEEP, FiO2, pressure, volume or rate set-
tings.
Modify the Max Vti level
Flow sensor not calibrated properly
Calibrate the flow sensor
Low Vti
Adjustment of Min Vti too high or f
pressure level not enough to reach
the volume required (for PSV, CPAP,
A/C PC, SIMV VC, SIMV PC modes)
Modify the Min Vti level or the pressure level ac-
cording to the physician’s prescription
Patient circuit obstructed or discon-
nected
Clean, unblock, and/or re-connect the patient
circuit
Flow sensor not calibrated properly
Calibrate the flow sensor
Low FiO2 Not enough oxygen delivered by the
ventilator
Check oxygen source.
Replace oxygen tank if it’s empty.
High FiO2 Oxygen sensor not calibrated prop-
erly
Calibrate the oxygen sensor
The Impala Ventilator will generate visual and audible alarm signals to notify you of
alarm conditions detected.
An alarm condition is indicated by:
• Audible alarm tone
•
Visual alarm indicator (flashing parameter button and power button)
In order to verify the operation of auditory and visual alarms, perform the following
procedure:
1. On the main screen, disconnect flow sensor and start ventilation
2. Check pressure audible alarm sounds
Alarm system test
Alarm silence
Audible alarms may be suspended, while visual alarms may not. The alarm silence
button is used to temporarily silence audible alarms for 2 minutes. When this but-
ton is pressed, its color turns red indicating audible alarms are silenced. The alarm
sounds are can be restored by press the button again.
List of alarms
Alarm
Cause/Ventilator Response
Corrective Action
Low battery
The AC (mains) power source
cut-off
and internal battery capacity is
less than 30%.
Reconnect the device to an AC power outlet
High pressure
Adjustment of Max PIP too
low (only for A/C VC, SIMV VC
modes)
Note: Always consult the clinical before
changing PEEP, FiO2, pressure, volume or
rate settings. Increase the Max PIP threshold
Airway obstruction
Check patient’s trachea and clear the ob-
struction. If the filter is obstructed, replace
the filter
Coughing or other high-flow
exhalation efforts
Treat patient’s cough. Silence the alarm, if
necessary
Patient inspiratory resistance or
compliance changes
Have physician determine if ventilator set-
tings are appropriate for the patient.