The power supply to the device is interrupted. This leads to an
immediate functional failure of the Kröber O2!
Countermeasures
The following should be checked:
• Is the power cord securely plugged into the outlet?
• Has a fuse blown? Check fuse and replace if necessary.
• Mains switch defective? - Exchange control board
• Error in the wiring? - Check wiring with device open
Note
If a functional test of the power failure alarm is to be performed, this
can be done as follows:
-Unplug the power cord from the wall outlet.
-Switch on the device.
The alarm works when activated now during the power-on self-test.
NOTE!
If the alarm is triggered again after switching on, the service
department must be notified.
NOTE!
The power failure alarm is powered by an internal,
maintenance-free capacitor.
The Kröber O2 oxygen concentrator is equipped with an innovative
multifunction sensor that monitors the oxygen concentration of the
delivered oxygen.
If this is less than 60%, then an oxygen deficiency alarm is
triggered.
Countermeasures
• check humidifier and hoses (internal and external) for
leaks.
• defect of the valves: replacement of the functional unit
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