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31. Functional Testing
Functional testing is designed to ensure the
ventilator performs safely and consistently.
A full functional test should be performed as part of
the annual service and a further three times a year
at three-monthly intervals
When the ventilator is in regular use the Quick Set-
up is normally sufficient to test the ventilator prior to
use.
If the ventilator has not been used for a period of 40
days or more, then a full functional test should be
carried out prior to returning the ventilator to service.
These functional test procedures may also be used
as part of the troubleshooting process.
Carry out the “Ventilator Set-up” on page 58 before
commencing with the following tests.
31.1 Functional testing
31.1.1 Complete Power Fail Alarm Test.
Step 1. The ventilator has a complete power fail
alarm. This alarm is activated when both mains
power and back-up battery power fail. This alarm is
a high pitched, continuous tone emitted by the
ventilator in the event of a complete power failure.
Turn ON the ventilator allow the start up screen to
clear and wait for it to enter the Ventilation Off
mode.
Calibrate Flow Sensor (for this calibration there is
no need to occlude the flow sensor).
Turn OFF the
mains power by
switching off the
supply at the
wall socket or by
removing the
plug from the
socket.
This will trigger
the Mains
Power Fail
alarm.
Depress and
hold down the
power switch for
2 seconds. The
ventilator will
power down and
the “Complete
Power Fail
Alarm” will be
active.
To cancel the
alarm depress the power switch again but do not
hold down.
Re-connect mains power.
Turn ON the ventilator and wait for it to enter the
Ventilation OFF mode.
Note: If the ventilator has not been used for
40 days or more it should have its batteries
disconnected. Please refer the ventilator to a
Qualified technician for re-connection of the
batteries.
Note: If the ventilator is in use on a patient,
the user can postpone the functional testing
to a time when the ventilator is not in use.
Warning: The settings used in the functional
testing of the ventilator do not bear any
relation to settings for ventilation of a patient.
Do not use functional test ventilation
parameters to ventilate a patient.
Warning: The ventilator must not be
connected to the patient during these
procedures.
Action: If the alarm fails to sound do not use
the ventilator on a patient. Remove ventilator
from service and contact an SLE approved
engineer.
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