Page 271 of 292
28.7 Gas supplies
Note: The ventilator requires the gas input pressures to be between 4-5bar.
The ventilator can operate with the gas pressures at 3-4bar, but when there
is a high demand for gas, No O
2
Supply or No Air Supply alarms can be
triggered. This is due to the supply regulators becoming unbalanced as
demand for one gas exceeds its ability to supply. The imbalance is
recognized by the ventilator as being the absence of one of the gases.
28.7.1 Oxygen supply
The ventilator requires a supply of pure oxygen between 4 to 5 bar.
28.7.2 Air supply
The ventilator requires a supply of medical grade compressed air to ISO8573.1
Class 1.4.1 (minimum level of filtration) between 4 to 5 bar. Recommended level
of filtration is class 1.1.1.
Description of Class 1.4.1
1= particle size of 0.1 microns. 4 = Pressure dewpoint of +3ºC. 1= oil content
0.01Mg/m3
Description of Class 1.1.1
1= particle size of 0.1 microns. 1 = Pressure dewpoint of -70ºC. 1= oil content
0.01Mg/m3
If the compressed air supply is found to fall below the ISO8573.1 standard then
in-line filtration of the air is required.
28.7.3 Flows
Fresh Gas Flow: 8 litres/minute
Maximum gas flow: 60 litres/minute
To Next Page
Loading...
