Problem / possible cause Solution
Ears are sore
Swift FX Bella headgear is not
fitted correctly.
Readjust the straps to ensure they
are not overtightened or twisted.
If problem persists talk to your
clinician.
Swift FX Bella headgear is not
suited for your ear type.
Replace the Swift FX Bella
headgear with the supplied Swift
FX for Her headgear.
Technical specifications
Pressure–flow
curve
The mask contains passive venting to protect against
rebreathing. As a result of manufacturing variations, the
vent flow rate may vary.
Vent flow rate (L/min)
0
10
20
30
40
50
60
4 6 8 10 12 14 16 18 20
Pressure
(cm H
2
O)
Flow
(L/min)
4 20
8 29
12 37
16 43
20 49
Mask pressure (cm H
2
O)
Dead space
information
Physical dead space is the empty volume of the mask
to the end of the swivel. Using the large cushions it is
106 mL.
Therapy pressure 4 to 20 cm H
2
O
Resistance Drop in pressure measured (nominal)
at 50 L/min: 0.4 cm H
2
O
at 100 L/min: 1.4 cm H
2
O
Environmental
conditions
Operating temperature: +5°C to +40°C
Operating humidity: 15% to 95% relative humidity
non-condensing
Storage and transport temperature: -20°C to +60°C
Storage and transport humidity: up to 95% relative
humidity non-condensing
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