Hisense HRBM503S User's Operation Manual page 12

Safety and warning information
Caution! Care and cleaning
Before maintenance, switch off the appliance and
disconnect the mains plug from the mains socket.
Do not clean the appliance with metal objects, steam
cleaner, ethereal oils, organic solvents or abrasive
cleansers.
Do not use sharp objects to remove frost from the
appliance. Use a plastic scraper.
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