Yuwell Breathwear Series, User Manual

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12
Resistance Drop in Pressure measured
at 50 L/min: ≤ 0.5 cmH
2
O
at 100 L/min: ≤ 1.5 cmH
2
O
Sound
DECLARED DUAL-NUMBER NOISE EMIS-
SION VALUES in accordance with ISO 4871.
The A-weighted sound power level of the
mask is less than 38 dBA, with uncertain-
ty 3 dBA. The A-weighted sound pressure
level of the mask at a distance of 1 m is
less than 30 dBA, with uncertainty 3 dBA.
Environmental Conditions Operating temperature: +5°C to +40°C
(41°F to 104°F)
Operating humidity: 10% ～ 90%
relative humidity non-condensing
Storage and transport: -20°C to +60°C (-
4°F to 140°F)
Storage and transport humidity: 10% ～ 90%
relative humidity non-condensing
Note: The mask system does not contain natural rubber latex, PVC or DEHP
materials.
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.
The mask does not contain any hazardous substances and may be disposed
of with your normal household refuse.
Disposal
Storage