Troubleshooting
Problem/possible
cause
Mask is uncomfortable
Cushion incorrectly
inflated
Technical specifications
Dead space
information
Resistance
Gross dimensions
S,
M, L, LW:
Mask setting
options
Solution
With the air turned off, adjust the straps so that you can
insert two fingers between your cheek and the lower
headgear strap.
The dead space of the mask varies according to cushion
size. It is 185 mL for the Medium size.
Drop in pressure measured (nominal)
at 50 L/min: 0.1 cm H
at 100 L/min: 0.7 cm H
Mask fully assembled – no headgear.
5.55"/141 mm (H) x 3.58"/91 mm (W) x 4.21"/107 mm (D)
6.06"/154 mm (H) x 3.74"/95 mm (W) x 4.6"/117 mm (D)
Select 'Activa' (if available) or 'Standard' as the mask option
when using the Mirage Activa LT with ResMed devices that
have mask setting options.
2
O
2
O
2