Hoffrichter CARAT II pro, User Manual

Page: 45 / 202

Chapter 4: Commissioning 45
OPERATION WITH INTERNAL BATTERY
The internal battery is exclusively used for power failures bridging and power
supply when changing the power source. It must not be used as primary
power source for ventilation.
To prevent the internal battery from discharging, the device should stay con-
nected to the mains power during standby times.
In order to ensure the full function of the battery, the battery must be main-
tained in accordance with the section "Battery maintenance" on page173 .
With a fully charged battery the device can be operated up to 4 hours on the fac-
tory default settings.
Table 1: Operating time with battery power and factory default settings
Battery power level Time Alarm
100 – 10 % 199 min -
10 – 0 % 39 min Low Internal Battery
0 % – complete power loss 1 min Internal Battery Empty
The internal battery enables operation of at least 1 hour at maximum power con-
sumption. Information about the battery charge level is indicated by the battery
LED and by touching the battery icon.
If the alarm "Low Internal Battery" appears, the ventilator must immediately
be connected to an alternative power source.
The alarm will continue until the battery charge has exceeded 10%.
Recharging a fully discharged battery takes approximately 3.5 hours. The device
is fully functional during recharging.
If the device switched on without having a connection to the mains supply, an audi-
ble alarm will sound, the alarm message "Battery Operation" will appear, and the
alarm LED will flash yellow. The battery LED glows depending on state of charge.