3. Open the filter using a suitable screwdriver. You can also use a coin (2 Euro) or a
pliers.
4. Pull out the filter with cover.
Fig. 32
5. Remove the old filter tube and place the new filter on the filter cover.
Fig. 33
6. Check the seal for cracks. If they are damaged, replace the seals.
7. Reinstall the filter tube with cover.
8. Repeat steps 3. – 7. for the second filter
9. Screw on the cover.
10. Perform a self-test.
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