How do I clean the exterior grille and case of the air conditioner?
Use water and mild detergent when cleaning the grille and case. Do not use bleach or harsh abrasives, as these can deteriorate the appearance by changing the product color or scratching its surface. Always turn the power off and unplug the unit before cleaning. (Page 9)
From the official LG LWG07-Series Window Air Conditioner manual, page 9
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