haier HK1000TXVE/ME - Manual (Page 7)

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4. Clean the filter Cleaning methods (once a month)
1) Push out the outer cover (Fig. 1);
2)Screw out filter by turning counterclockwise (Fig. 2);
3) Flash clean with running water;
4) Replace the filter by turning clockwise and remount the
cover.
Caution: The filter must be in place, or it may lead to
leakage.
Fig1 Fig2
Fig3