Cleaning and maintenance
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Replacing components
Replacing the air filter
Inspect the condition of the air filter and check whether it is blocked by dirt or dust. With normal use, the
air filter needs to be replaced every six months (or more often in a dusty environment).
CAUTION
Do not wash the air filter. The air filter is not washable or reusable.
To remove and replace the air filter
1. Unlock the air filter cover by turning in an anti-clockwise direction.
2. Pull the air filter cover from the device.
3. Pull the air filter from the cover and discard.
4. Insert a new filter into the cover.
5. Insert the air filter and cover back into the device.
6. Turn in a clockwise direction to secure in place.
Replacing the expiratory flow sensor and antibacterial filter (Astral 150 only)
CAUTION
• Regularly check the double limb adapter (expiratory valve) for moisture and contaminants.
Particular care should be taken when using nebulisers or humidifiers.
• When replacing the expiratory flow sensor and antibacterial filter also replace the blue
membrane and adapter.
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