1. To remove the front panel, pull it out as directed by the manufacturer.
2. Clean the front panel with a soft dry cloth or vacuum cleaner. In case of more difficult dirt removal, use a damp cloth and mild soap.
Do not use chemicals or water directly on the panel. If there is water coming in, grounding may be impaired, causing sparking with danger of fire or electric shock.
3. Reassemble and close the front panel by pushing it down as indicated by the manufacturer.