Commissioning
41
OPERATION WITH INTERNAL BATTERY
To prevent the internal battery from discharging, the device should
stay connected to the mains power during standby times.
Charging a completely empty battery takes approximately 4 hours.
If the device is switched on without a connection to the mains power, or the
device is disconnected from the mains power during operation, an alarm
sounds and the message “Battery Operation” appears. To switch off the
alarm sound and delete the message, press the alarm button.
With a fully charged battery, the device can be operated at factory set-
tings for a maximum of 5.5 hours. At maximum power consumption the
internal battery enables an operating time of at least 1 hour. The battery
LED (see page 35) and the battery symbol (see page 59) provide more infor-
mation about the battery’s capacity.
If the alarm “Internal Battery low” appears, the ventilator must imme-
diately be connected to an alternative power source.
POWER FAILURE
During a power failure, the battery capacity display must be moni-
tored and an alternative power source kept ready. For further details
on the display of the battery capacity, please refer to page 35.
If the power supply is interrupted by a power failure, the device is supplied
with power via the internal battery.
Summary of Contents for TRENDvent
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