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Battery Operation
Puritan Bennett 540™ Ventilator User’s Manual
6-3
Figure 6-1.
Internal Battery Indicator
•
A loss of external supply alarm is activated.
•
A “beep“ sounds every five (5) minutes to remind the user that the ventilator is being powered
by its internal battery.
If ventilation is
stopped
, the internal battery reserve capacity is displayed as a percentage of battery
charge, as shown in the following graphic.
If the ventilator is
running
, the internal battery reserve is momentarily displayed as a percentage.
Then, after the ventilator calculates the battery time remaining (which takes about two minutes,
Summary of Contents for Puritan Bennett 540
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Page 118: ...Specifications A 18 Puritan Bennett 540 Ventilator User s Manual This page intentionally blank...
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