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31.1.2 Back-up alarm speaker test
Step 2. Verify that a beep is sounded every time a
parameter control is pressed (O
2
%).
31.1.3 Setting O
2
%
Step 3. In the Ventilation OFF mode
select the O
2
% parameter and
using the arrow keys set the value
to 21%. The ventilator defaults to
21% on start up.The measured
value will be displayed once the O
2
cell has finished its self calibration
routine. When finished, the set value and measured
value should correspond.
31.1.4 Functional Testing without a Flow Sensor
Step 4. If the ventilator
is to be used without a
flow sensor fitted,
then press the
“Continue without
flow” button in the
alarm panel.
If the “Continue without flow” button does not
display when a flow sensor is NOT fitted remove
ventilator from service and contact an SLE
approved engineer
Fit a test lung to the ET manifold.
The user should now advance to section 31.1.6
31.1.5 Calibration of the Flow sensor
Step 5. Make sure that
there is no flow passing
through the sensor. For
this purpose, occlude the
flow sensor by holding it
between two fingers,
closing both ends as
shown in the following
picture.
Press the Options and
Service Data button.
From the services
panel press the Flow
button (A)
With the flow sensor
now occluded press
the Calibrate button
(B). This initiates the
calibration cycle for
the flow sensor. Keep
the sensor occluded
until the words
“Calibration
Complete” appears
above the Calibrate
button.
The sensor has now been calibrated and can be
fitted into the patient circuit.
Action: If the beep fails to sound do not use
the ventilator on a patient. Remove ventilator
from service and contact an SLE approved
engineer.
Action: If the values do not correspond
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.
Note: The functional testing routines have
been written with the flow sensor fitted. The
user will be told to skip a section if it applies
to testing a flow related function.
Action: If the flow sensor fails to calibrate
then perform the following actions in the
order suggested below. If the action involves
replacing a part then perform a re-calibration
after that action. If the flow sensor calibrates
successfully after performing one of these
actions carry on the remainder of this test
from the point where the flow sensor can be
fitted to the patient circuit.
• Replace the flow sensor cable
• Repeat calibration process with both ends
of flow sensor occluded
• Replace the flow sensor
If the fault continues after re-calibration
remove ventilator from service and contact an
SLE approved engineer.
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