Chapter 4
Periodic Maintenance
REF 1029568 Rev A BiPAP® Focus™ Ventilator Service Manual © Respironics, Inc. 4-3
Replacing the Air
Inlet Filter(s)
The reusable air inlet filter (gray) must be installed and replaced every year.
An additional ultra-fine disposable filter (white) is also recommended for
enhanced particulate filtering.
CAUTION: Replace any filter that is damaged.
CAUTION: Do not attempt to clean or reuse disposable air inlet filters.
CAUTION: Do not place more than one gray reusable air inlet filters that come with
the ventilator into the device at the same time. One gray reusable air inlet
filter and one white disposable ultra-fine filter may be used.
Replacing the Battery WARNING: To avoid the risk of fire, use only Respironics-approved batteries. All battery
connections are keyed to ensure proper connection. Do not attempt to connect
a battery incorrectly. Only qualified technicians should install the battery.
NOTE: NOTE: If a Low Battery or Battery Depleted alarm occurs during Pre-
Operational Check, then the battery requires charging. If a Batt. Charge
Failure alarm occurs, the battery may be fully depleted. A re-charge is
recommended before proceeding. If the battery does not begin to charge
after one hour and the Batt. Charge Failure persists, contact customer
service for a replacement battery.
NOTE: Battery alarms will sound towards the end of the battery test. Gas delivery
will continue during this time, until the battery is depleted.
If the number of battery powered operations is greater than 220 per year, the
battery should be replaced every six months. If the number of battery
powered operations is less than 220 per year, the battery should be replaced
every year. It is recommended that the battery be tested once per month. A
fully charged battery is designed to operate for 45 minutes at default settings
(See “Power” on page 3-11). If the battery does not continue to deliver gas for
45 minutes at these settings, it should be replaced.
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