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9Working with other optional accessories
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Connecting a sensor
1 Connect the air tubing to the T-piece adapter.
2 Connect the FiO
2
monitoring sensor to the T-piece adapter.
3 Connect the adapter to the air outlet of the device.
4 Connect one end of the cable to the FiO
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monitoring sensor.
5 Connect the other end of the cable to the rear of the device.
6 Start calibration (see “Setup menu: Options” on page 16). This should be repeated
periodically at the recommendation of
your clinician.
Attaching an antibacterial filter
The use of an antibacterial filter may be recommended by your clinician. One antibacterial
filter—product code 24966—can be purchased separately from ResMed.
Regularly check the filter for entry of m
oisture or other contaminants. The filter must be
replaced according to the manufacturer‘s specifications.
Note: R
esMed recommends using a filter with a low impedance (less than 2 cm H
2
O at
60 L/min, eg, PALL BB 50 filter).
WARNING
Do not use the antibacterial filter (product code 24966) with the H4i.
1 Fit the antibacterial 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 (see “Setup menu: Options” on page 16). From the
Setup menu
, select Options. This enables the device to compensate for the impedance
introduced by the filters.
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