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English
Technical specifications
Note: The mask system does not contain latex, PVC or DEHP materials.
Pressure–Flow
Curve
Note: The mask contains passive venting to protect against
rebreathing. As a result of manufacturing variations, the vent
flow rate may vary.
Pressure
(cm H
2
O)
Flow
(L/min)
4 21
8 28
12 33
16 38
20 42
Vent Flow Rate (L/min)
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 this is 94 mL.
Therapy
Pressure
4 to 20 cm H
2
O.
Resistance Drop in pressure measured (nominal)
at 50 L/min: 0.54 cm H
2
O and at 100 L/min: 1.95 cm H
2
O.
Sound DECLARED DUAL-NUMBER NOISE EMISSION VALUES in
accordance with ISO 4871. The A-weighted sound power
level of the mask is 25 dBA, with uncertainty 3 dBA. The
A-weighted sound pressure level of the mask at a distance of
1 m is 17 dBA, with uncertainty 3 dBA.
Environmental
Conditions
Operating temperature: +41°F to 104°F (+5°C to +40°C)
Operating humidity: up to 95% non-condensing
Storage and transport temperature: -4°F to 140°F (-20°C to
+60°C)
Storage and transport humidity: up to 95% non-condensing.
Gross
Dimensions
380 mm (H) x 57 mm (W) x 62 mm (D). Mask fully assembled
with short tube assembly – no headgear.
Note: The manufacturer reserves the right to change these specifications
without notice.
Symbols
Caution, consult accompanying documents;
Lot number;
Part
number; Temperature limitation; Humidity limitation; Does not
contain latex; Indicates a Warning or Caution and alerts you to a possible
injury or explains special measures for the safe and effective use of the device.
0
10
20
30
40
50
4 6 8 10 12 14 16 18 20
Troubleshooting
Possible reason Solution
Pillows won’t seal properly, are uncomfortable or cause red marks.
Pillows may have
been fitted incorrectly,
incorrectly adjusted, or
the headgear is too tight.
Carefully follow instructions in “Fitting your Swift LT”.
Check headgear is not over-tightened.
Check ResMed logo on top of pillows is facing
outwards.
Inner wall position of one/
both pillows is incorrect.
Squeeze pillow sides to release inner wall. The
correct position in shown in “Reassembling your
Swift LT”.
Pillows are wrong size. Talk to your clinician.
Pillows may be dirty. Clean pillows according to instructions in “Cleaning
your Swift LT in the Home”.
Nasal pillows system is too noisy
System is assembled
incorrectly.
Reassemble the Swift LT. Make sure the pillows are
fully inserted into the frame.
Before using your Swift LT for Her
WARNINGS
The vent holes must be kept clear. •
The mask should not be used unless the CPAP system is turned on and •
operating properly.
Follow all precautions when using supplemental oxygen. •
Oxygen flow must be turned off when the flow generator is not operating, •
so that unused oxygen does not accumulate within the flow generator
enclosure and create a risk of fire.
At a fixed flow rate of supplemental oxygen flow, the inhaled oxygen •
concentration varies, depending on the pressure settings, patient breathing
pattern, mask, point of application and leak rate.
The technical specifications of the mask are provided for your clinician to •
check that they are compatible with the flow generator. If used outside
specification or if used with incompatible devices, the seal and comfort of
the mask may not be effective, optimum therapy may not be achieved, and
leak, or variation in the rate of leak, may affect the flow generator function.
Discontinue using the Swift LT if you have ANY adverse reaction to the use •
of the mask, and consult your physician or sleep therapist.
As with all masks, some rebreathing may occur at low CPAP pressures. •
Refer to your flow generator manual for details on settings and operational •
information.
Remove all packaging before using the mask. •
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