ResMed AirFit F40 User Manual page 11

Therapy pressure: 4 to 30 cmH
O
2
Resistance with Anti-Asphyxia Valve closed to atmosphere
Drop in pressure measured (nominal)
at 50 L/min: 0.4 cmH O
2
at 100 L/min: 1.7 cmH O
2
Resistance with Anti-Asphyxia Valve open to atmosphere
Inspiration at 50 L/min: 1.1 cmH O
2
Expiration at 50 L/min: 1.1 cmH O
2
Anti-Asphyxia Valve pressure
open-to-atmosphere (activation): <4 cmH O
2
closed-to-atmosphere (deactivation): <4 cmH O
2
Sound: Declared dual-number noise emission values in accordance with ISO4871:1996
and ISO3744:2010. A-weighted sound power level with uncertainty of 3dBA and
A-weighted pressure level at a distance of 1 m with uncertainty of 3 dBA are shown:
Sound power level (with QuietAir vent ring): 20 dBA
Pressure level (with QuietAir vent ring): 13 dBA
Sound power level (with Multi-hole vent ring): 34 dBA
Pressure level (with Multi-hole vent ring): 26 dBA
Environmental conditions
Operating temperature: 5°C to 40°C
Operating humidity: 15% to 95% RH non-condensing
Storage and transport temperature: -20°C to 60°C
Storage and transport humidity: up to 95% RH non-condensing
International Commission on Non-Ionizing Radiation Protection (ICNIRP)
Magnets used in this mask are within ICNIRP guidelines for general public use. The static
magnetic field strength is less than 400 mT at component surface and less than 0.5 mT at
50 mm distance.
Service life: The service life of the mask system is dependent on the intensity of usage,
maintenance, and environmental conditions to which the mask is used or stored. As this
mask system and its components are modular in nature, it is recommended that the user
maintain and inspect it on a regular basis, and replace the mask system or any
components if deemed necessary or according to the instructions in the 'Cleaning your
mask' section of this guide.
Storage
Ensure that the mask is thoroughly clean and dry before storing it for any length of time.
Store the mask in a dry place out of direct sunlight.
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