624074/07 4-21
4.4.1 High pressure
1. Ensure a 2 l demonstration lung assembly is connected to
the device.
2. Set the device in the P-CMV mode.
3. Set the high Pressure alarm limit to 15 cmH2O above the
measured Ppeak.
4. Squeeze the demonstration lung hard during inspiration
5. Verify that the
High pressure
alarm activates, inspiration
ceases, and pressure falls to the PEEP/CPAP level.
4.4.2 Low minute volume
1. Let the ventilator deliver 10 breaths with no alarms.
2. Adjust the low ExpMinVol alarm limit so it is higher than the
measured value.
3. Verify that the
Low minute volume
alarm activates.
4.4.3 Oxygen supply failed and low oxygen alarms
1. Set the Oxygen control to 50%.
2. Wait for 2 minutes.
3. Disconnect the oxygen supply.
4. Verify that the
Oxygen supply failed
alarm activates
and the Oxygen concentration displayed in the monitoring
window (
1
) decreases. Verify that the
Low oxygen
alarm
activates.
5. Then wait 30 seconds, or until the oxygen concentration
falls below 40%.
6. Reconnect the oxygen supply.
7. Verify that the
Oxygen supply failed
and the
Low
oxygen
alarms reset. The
Low oxygen
alarm resets when
the measured oxygen exceeds 45%.
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