Cleaning and maintenance
English 63
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 double limb adapter (expiratory valve)
Regularly check the double limb adapter for moisture and contaminants. Replace as necessary using the
procedure as described in Fitting the circuit adapter (see page 24).
Servicing
WARNING
Inspection and repair should only be performed by an authorised agent. Under no circumstances
should you attempt to service or repair the device yourself. Failure to do so could void your Astral
device warranty, damage the Astral device or result in possible injury or death.
Note: Retain the original packaging of the Astral device for use when shipping to/from an authorised ResMed Service
Centre.
WARNING
• To prevent the risk of cross-contamination, a bacterial/viral filter, placed on the inspiratory port
is mandatory if the device is to be used on multiple patients as under some fault conditions,
expired gas may be returned through the inspiratory port.
• The expiratory module, internal bacterial/viral
filter, expiratory flow sensor and blue membrane
come into contact with exhaled gases but do not form part of the inspiratory pathway.
Maintenance Timetable
The Astral device should be serviced by an authorised ResMed Service Centre according to the following
schedule. The Astral device is intended to provide safe and reliable operation provided that it is operated
and maintained in accordance with the instructions provided by ResMed. As with all electrical devices, if
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