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5 Maintenance
5.2.4 Preparation
An adjustment always requires time. Leave yourself plenty of time
to prepare the necessary steps of the procedure.
● Have all necessary tools available.
● Let the device run for several minutes to guarantee that the
temperature is correct, for example.
Note:
When adjusting the gas-sensitive semiconductor (Inspection
above ground and House/Spaces groups) a conditioner must
be applied.
● SEWERIN recommends applying separate conditioners for
methane CH
4
on the one hand and propane C
3
H
8
/
butane C
4
H
10
on the other.
● The conditioner must already be connected during the run-
ning-in period.
5.2.5 Performing the adjustment
The zero point and sensitivity are adjusted following the same
procedure for all gases. The adjustment of oxygen is an excep-
tion. For this reason it is described separately (see Section 5.2.6).
You can nd detailed information on the adjustment
of various gases (for example, test gas concentration,
installation date of the sensor, date of last adjustment)
under Information.
The symbol appears after the corresponding Adjust-
ment… menu item has been selected.
5.2.5.1 Adjusting the zero point
For all gases except oxygen O
2
, the zero point is adjusted follow-
ing the same procedure.
1. Make sure that only fresh air is being drawn in.
2. Open Settings.
3. Select Adjustment menu item.
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