Attaching a bacterial/viral filter
The use of a bacterial/viral filter may be recommended by your clinician. One bacterial/viral filter—product
code 24966—can be purchased separately from ResMed.
Regularly check the filter for entry of moisture or other contaminants. The filter must be replaced according
to the manufacturer's specifications.
Note: ResMed recommends using a filter with a low impedance (less than 2 cm H
PALL BB 50 filter).
WARNING
•
Do not use the bacterial/viral filter (product code 24966) with the H4i.
•
Regularly check the bacterial/viral filter for signs of moisture or other contaminants, particularly
during humidification. Failure to do so could result in increased breathing system resistance.
•
Only use bacterial/viral filters that comply with the relevant safety standards, including
ISO 23328-1 and ISO 23328-2.
1. Fit the bacterial/viral filter to the air outlet of the device.
2. Attach the air tubing to the other side of the filter.
3. Attach the mask system to the free end of the air tubing.
4. Perform the Learn Circuit function (refer to Setup menu: Options (see page 19)). From the Setup menu,
select Options. This enables the device to compensate for the impedance introduced by the filters.
Using water traps
When using a water trap, check the air circuit regularly for accumulated water. Follow the manufacturer's
recommendations for frequency of inspection of water traps.
12
O at 60 L/min, eg,
2