6 Checks and maintenance
56 SA-112-0106V1.0-WEM-GB © F. Stephan GmbH
When fitting the new rechargeable battery, take special care to connect it
up to the right poles! Incorrect polarity can damage the electronic
components.
The service life of the fitted oxygen sensor is approx. 150000 %h.
Check the efficiency of the sensor every six months.
To check the sensor, take it out of the device. Disconnect the connection
plug after opening the service flap.
Remove the sensor by unscrewing counter-clockwise.
The basic voltage of the fuel cell can be measured with a multimeter at
the plug of the oxygen sensor.
If the measured basic voltage is < 8.5 V, the cell is depleted and must be
replaced by a new one.
After opening the packaging, the oxygen sensor takes approx. 20 minutes
to achieve its full basic voltage.
Fluctuations in the FiO
2
display are possible during this period.
The oxygen sensor has to be calibrated once it has been fitted in the
device and the service flap has been closed.
To do so, set the option O2 Cal to YES in the A
LIA menu.
Please comply with chapter 3 of the A
LIA operating instructions!
The new values must be saved after calibration!
To this end, set the option SAVE SETs to YES in the A
LIA menu.
The new calibration value is only accepted after leaving the OPTION
menu!
Replace the intake filter of the integrated compressor every six months.
Check calibration of the pressure sensors every six months. Re-
calibration is only necessary if the adjusted pressure values deviate by
more than 3% from the actually achieved pressure values.
Unscrew the left recessed handle to give access to the calibration block
without opening the front housing.
Caution
Oxygen sensor
Caution
Intake filter
Calibrating the
pressure sensors
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