LG WAW73JW2RP Owner's And Operator's Manual page 22

How to clean
Wipe the surface of the tank with soft cloth.
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Do not use any chemical or detergent. If chemical or
detergent is not drained completely, this may be
harmful to the human body.
Rinse the storage tank thoroughly with the generated purified water,
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and then drain the water completely.
Put the cover of the storage tank and use the locking device.
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22
※ Close the spot using the marked
Cover of the storage tank until a
"click" sound is heard.
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Cover of the storage tank