Covidien Puritan Bennett 540, User Manual, Page: 88 / 141

Internal Battery
6-2
Puritan Bennett 540™ Ventilator User’s Manual
6.2 Battery Operation
Note:
Speaker and battery alarms may occur when the unti is first powered on after the internal battery has been
completely drained. Connect to an AC power source and recycle power.
In the event of AC power interruption or disconnection of the external AC or DC power supply, the
ventilator automatically switches to its internal battery and the following events occur:
•
The Battery symbol is displayed at the top on the general information line.
•
Battery reserve capacity is displayed on the right of the symbol.
•
The “
INTERNAL BAT
“ indicator at the top left of the ventilator’s front panel is continuously lit
( Figure 6-1 ).
Table 6-1. Internal Battery Reserve Capacity
Displayed Values Average Operating Time on Internal Battery Power
a
a. Average durations shown are with a fully charged battery having less than 50 charge/recharge cycles.
Vt
=
200 ml (± 5 ml)
PIP
=
10 cmH
2
O (± 2 cmH
2
O)
Rtot
=
20 bpm
11 hours (–10%)
Vt
=
300ml (± 5 ml)
PIP
=
20 cmH
2
O (± 2 cmH
2
O)
Rtot
=
15 bpm
9 hours (–10%)
Vt
=
500 ml (± 5 ml)
PIP
=
30 cmH
2
O (± 2 cmH
2
O)
Rtot
=
15 bpm
6.5 hours (–10%)
Vt
=
750 ml (± 5ml)
PIP
=
45 cmH
2
O (± 2 cmH
2
O)
Rtot
=
20 bpm
(Maximum Ventilation Parameters)
4.5 hours (–10%)
Caution
Before operating the ventilator on its internal battery, ensure that the battery is fully charged and that the charge
holds (see section
6.4, “Recharging the Battery,” on page 6-4 ).