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31.1.10 Breath Not Detected Alarm
Step 23. Set the
PEEP to 1 mbar.
Remove the test
lung from the flow
sensor.
Occlude the flow
sensor.
After 20 seconds this
should initiate an
audible and visual
Breath Not Detected
alarm.
Refit the test lung to
the flow sensor. The
alarm should self
cancel.
Press the reset button
to clear the
alarm panel of the
alarm notification.
Set the PEEP to 5 mbar.
31.1.11 Leak / Block Alarm
Step 24. Disconnect
the fresh gas tubing
from the ventilator.
This should initiate an
audible and visual
LEAK alarm
indication.
Step 25. Occlude the
fresh gas outlet. This
should initiate an
audible and visual
BLOCK alarm
indication.
Reconnect the tubing, audible and visual alarms
should reset.
Press the reset button to clear the alarm
panel of the alarm notification.
Action: If the “Breath Not Detected” alarm is
not triggered perform the following actions.
After each action retest the ventilator. If the
ventilator successfully passes all these tests
after performing one of these actions go to
Step 24.
• Check patient circuit is set up correctly as
shown in section 12. on page 58: Ventilator
Set-up. Pay close attention to proximal
airway, fresh gas connection and the
expiratory limb.
• Replace the flow sensor cable.
• Replace the flow sensor.
If the fault continues after checking all
possible causes, remove the ventilator from
service and contact an SLE approved
engineer.
Action: If either of these alarms are not
triggered under alarm conditions perform the
following actions. After each action retest the
ventilator. If the ventilator successfully
passes all these tests after performing one of
these actions go to Step 26.
• Check the fresh gas limb of the patient
circuit from the restrictor to the fresh gas
port.
• Check the humidifying chamber and
replace if it is found to be leaking, damaged
or faulty.
If the fault continues after checking all
possible causes remove the ventilator from
service and contact an SLE approved
engineer.
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