Dräger Savina Instructions For Use Manual page 89

If the external battery is discharged or if no DC on-board
voltage is available, the device switches over to the internal
battery and displays the message:
!! Int. battery activated
Acknowledge message = press »Alarm Reset« key.
The following advisory message is displayed:
! Int. battery activated
The operating time with an external battery depends on the
state of charge and type of battery connected:
With a fully charged 24 V battery with 17 Ah, the operating
time is about 7 hours.
Savina detects when the external battery is discharged and
switches over to the internal battery.
When a mains voltage becomes available again, Savina
automatically switches over to mains power supply, charging
the internal battery first and then the external battery.
When the power source is an external battery, the internal
battery is not charged. Only trickle charging takes place.
Immediately reconnect Savina to mains power supply to
fully recharge the internal and external battery again.
Operation with the internal battery
In the event of a mains power failure, if no external battery is
connected or if the external battery is discharged, Savina
seamlessly switches over to the internal battery.
Display:
1 No mains supply: top lamp »
2 No external battery or no DC on-board network: middle
J
lamp »ext. « out
3 Supply from internal battery: bottom lamp »int.
shows green.
When the device automatically switches over to the internal
battery, the following advisory message is displayed:
!! Int. battery activated
Acknowledge message = press »Alarm Reset« key.
The following advisory message is displayed:
! Int. battery activated
N
« out.
J
«
N
1
2
ext. J
3
int. J
Preparation
89