6. Unplug both lines. See Fig. 3.
7. Loosen the screws on the small box (the screws are connected to the
inside of the liner and can be screwed out from the inside of the liner). See
Fig. 4a & 4b.
8. On the right side of the box, you can see two screws, screw out the two
screws and open the small cover of the box. See Fig. 5a & 5b.
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