Bosch BEA 150 Repair Instructions page 10

Procedure:
Using a non-soluble felt pen, write the current date on the
adhesive label 1 689 980 296 and confirm with your signature
(see illustration).
aktuelles Datum
Unterschrift
Stick the completed adhesive labels onto the new GF3 and
GF4 coarse filters.
Install the new GF3 and GF4 coarse filters.
2. Replace the carbon canister AF1 in the zero gas pipe.
3. Check the measuring accuracy of the exhaust-gas analyzer
with calibrating gas.
i Always ensure a flow rate of > 1 l/min when letting gas flow
through the calibrating-gas inlet. Allow a sufficient warm-up
time (min: 5 minutes).
Click on Test functions (Sec. 4.7) and open the menu item
Analysis mode (Sec. 4.7.6).
Automatic zero calibration takes place.
Let test gas no. 4 (sensitivity test) or single gases of the
appropriate concentration in succession flow through the
exhaust-gas analyzer via the calibrating-gas inlet. Note down
the displayed values.
Next, use test gases no. 5 and no. 1 (gas mixture for sag test)
to check linearity, and note down the displayed values.
If the display deviates from the certified calibrating-gas value
during a measurement (sensitivity or linearity) by more than 5
%, replace the measuring bank (Section 10.10).
! If regular calibration is required due to special regulations,
execute the menu Readjustment with test gas (4.7.5) in the
Test functions menu (4.7). This will reset the monitoring
clock.
10
Datum/Date
Unterschrift/Sign
459558/23 Ha