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14.2.7 Patient Leak Alarm
The user can modify
the percentage at
which the patient leak
alarm is triggered or
turn off the alarm all
together.
The increments are in 5% steps with a minimum
value of 10% and a maximum value of 50%.
Continuing beyond 50% turns the alarm OFF.
14.2.8 Reset Contamination Alarm
The ventilator monitors the flow sensor continually
to ensure that it has not become contaminated.
Contamination is regarded as the build up of
secretions on the sensor wires, or flooding of the
sensor with liquid, or the flow sensor becoming
saturated with increased flow.
When the Reset
Contamination
Alarm is
generated it is
always in
conjunction with
the Clean Flow
Sensor alarm message.
To clear the alarm the following steps should be
followed.
Step 1. Remove the flow sensor from the ET tube
and connect the ET manifold directly to the ET tube.
Step 2. Examine the sensor.
Step 3. Press the Reset Contamination Alarm
button.
Step 4. The alarm message will now read Calibrate
Flow Sensor. Press the Adjust button and then
calibrate the flow sensor.
Step 5. Insert the flow sensor back into the circuit.
Step 6. If the Clean Flow Sensor is triggered again
the flow sensor is contaminated with fluid or
secretions and must be replaced with a clean
sensor.
If the No Current Alarms message is displayed, the
sensor was saturated with high flow for 3.5 seconds
due to ET tube disconnection.
Note: If a patient leak alarm is triggered the
user can reach the Patient Leak Alarm Limit
panel in one action by pressing Adjust button
in the alarm panel.
Note: The patient leak alarm is not reset when
changing between modes.
Note: The Clean flow sensor alarm will not be
triggered under the following conditions in
conventional ventilation: the measured PEEP is
less than or equal to the set. In High frequency
ventilation: the measured mean is less than or
equal to the set.
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