
14.8
Apply a flow of Oxygen from Anaesthetic Machine of 8 L/min.
Check displayed 'Vt Meas' Rises.
14.9
From Menus select Fresh Gas compensation ON.
Allow 2 minutes for reading to stabilise.
Check displayed 'Vt Meas.' = 600 ml +/- 50 ml.
Observe that the bellows delivers less gas than before
14.10 Press 'Wave Freeze'
Check waveform freezes on display.
Press again to clear.
14.11
Set PEEP to 10cm H2O
Check waveform to see that it displays 10cm H2O of PEEP. (Straight line is good.
Decline of line indicates leak.)
Turn off PEEP.
14.12 Adjust Airway Pressure
Observe changing scale on waveform.
Reset to max.
14.13 Touch waveform screen
Check the following second waveforms are selectable and waveform is displayed.
1. Volume v Time.
2. Pressure v Volume (Compliance Loop).
Reset back to 'None'.
14.14 Check the ventilator is operating smoothly, test lung is inflating, and system pressure is
displayed on both vent and absorber manometer.
15
Airway alarm Tests (every 6 months)
15.1
Set ventilator to default settings and ventilate test lung in 'Volume' mode.
15.2
Disconnect test lung and occlude patient connector.
Ensure 'High Airway Pressure' occurs.
Re-connect test lung and ensure alarm clears.
15.3
Disconnect test lung and open patient connector.
Ensure 'Low Airway Pressure' occurs.
Re-connect test lung
Re-fill bellows and ensure alarm clears.
15.4
Volume cycle vent, adjust Vt Set to achieve a peak airway pressure of greater than 30
cm H2O of water.
15.5
At peak pressure clamp pressure sensing tube.
Displayed waveform should show pressure greater than 30 cm H2O continuously.
Check that 'High Continuous Pressure' alarm is activated.
Unclamp pressure-sensing tube and allow the vent to cycle.
Reset ventilator to default settings.
15.6
Disconnect power supply.
Verify ventilator continues to operate on battery.
SERVICE SCHEDULE
62
Summary of Contents for AV-S
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