Weinmann VENTIlogic LS Instructions For Use Manual page 76

7.3.2 Precautions
Take the following precautions when calibrating.
1. Shut off the oxygen source.
2. Operate the device for approx. two minutes without an oxygen supply to flush out the
remaining oxygen in the device.
7.3.3 Perform calibration
Proceed as follows for calibration.
7.3.4 Shelf life of the oxygen sensor
The shelf life of the oxygen sensor depends on the concentration of the oxygen supplied,
on ambient temperature, on duration of use and on the device settings. Under normal
conditions (ambient temperature 21 °C, 40 % oxygen concentration) the sensor lasts 6
months.
Note:
The sensor becomes exhausted even if it is not connected.
7.3.5 Change oxygen sensor
Once the oxygen sensor is exhausted, remove it from the device. Connect a new oxygen
sensor as described in "Measure oxygen concentration (only valve ventilation)" on
page 45.
76 EN
Function check
1. Ensure that the oxygen sensor is connected.
2. Operate the device.
3. Press the menu key
Calibrate O sensor.
2
4. Confirm your selection by pressing the dial.
The calibration process is started and remaining
calibration time is displayed.
The device then automatically switches back to the
patient menu.
5. Check the display: the oxygen sensor is working
perfectly if mean oxygen concentration is 21 %.
. The selection bar is on