Page 162
Fit a test lung to the flow sensor.
Press the Return Button (C) twice to return to the
Ventilation Off panel or allow the panel to self
cancel after 30 seconds.
31.1.6 Oxygen Alarm Test
Step 6. In Ventilation
Off mode panel press
the Oxygen Alarm
Test button.
The Oxygen Alarm
Testing window will
now be displayed in
the Mode Panel.
With the Alarm Auto-
Track button set to
ON set the O
2
%
parameter to 45% O
2
.
Once set, press the
Alarm Auto-Track
button. The button will
now read Alarm set to
45.
Increase the
percentage of oxygen
to 53%.The blender
will increase the
percentage of oxygen
to the set value. The High Oxygen Alarm will now be
triggered after one minute.
Return the percentage of Oxygen to 45% and press
the Reset button on the alarm panel.
Decrease the
percentage of oxygen
to 37%. The blender
will reduce the
percentage of Oxygen
to the set value. The
“Low Oxygen” alarm
will now be triggered.
Further decrease the
percentage of Oxygen
to 21% and press the
Return button to
cancel the Oxygen
alarm test.
Step 7. Press the
Mode Select button to
enter the Mode select
panel.
Step 8. From the Mode
Select panel select
CPAP, but DO NOT
press the confirm
button. Advance to
Step 9.
Warning: If the flow sensor is incorrectly
calibrated, i.e. whilst fitted to the patient
circuit or partially occluded, the user must
note that the resistance and compliance
readings in the lung mechanics and
measurement panel will be incorrect.
Measured values in the parameter controls
will also be incorrect and could lead a
condition detrimental to the patient.
Recalibration with the sensor occluded must
be carried out at all times.
Action: If either the high or low Oxygen level
alarm fails to trigger, perform a two point
oxygen sensor calibration (See “Two Point O
2
Calibration” on page 126). If the fault
continues after calibration remove ventilator
from service and contact an SLE approved
engineer.
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