Chapter 4
4-8
BiPAP Vision Service Manual © Respironics, Inc.
1062788
Periodic Maintenance
4.6 Internal Alarm
Battery
The internal nickel cadmium (NiCAD) battery on the DC board activates the
audible and visual
Vent Inop
alarm indicators if an error occurs. A fully-
charged battery can maintain the audible alarm for up to 20 minutes.
The NiCAD battery can lose its charge if the ventilator is not used for an extend-
ed time. In a typical environment, a fully charged battery can be stored approx-
imately 6 months before losing its charge, but the discharge rate depends
heavily on temperature.
CAUTION:
Prolonged storage of the BiPAP Vision at high temperatures, above 80 ºF
(27 ºC) can result in premature battery failure. Failure to recharge a
battery when in storage for long periods reduces battery life, activates the
Check Vent
alarm, and generates error code 205.
NOTE:
Charge the internal alarm battery before use if it has been stored for over
3 months. If the battery voltage is too low to support the alarm indicators,
the
Check Vent
visual (Eye icon) and audible alarm indicators activate.
Low battery voltage may shorten the time that an audible alarm can
operate.
4.6.1
Low Internal Alarm Battery Error Code
Low battery voltage generates error code 205. Follow these steps to check the
error code:
1. Use the Alarm reset key to silence the audible alarm (the audible
alarm does not sound again).
2. View the Monitoring screen (press the Monitoring hard key if
necessary).
3. Press the Options soft key.
4. On the Options screen, press the Error soft key. Error codes are
displayed in the top line of the Options/Message area.
4.6.2
Recharging the Internal Alarm Battery
There are two methods for recharging the internal alarm battery:
•
Fast charge: use this method if the
Check Vent
indicator lights and
error code 205 occurs.
•
Normal: use this method if the
Check Vent
indicator does
not
light and
error code 205 does
not
occur.
