6IntroductionProper Care of the BHTEnsure to turn OFF the BHT before cleaning.● BHT terminal, charger terminal dirtPeriodically wipe any dirt from the BHT or battery terminals with a cotton swab andso on.● Housing dirtWipe any dirt from the housing with a dry, softcloth.If excessively dirty, wipe with a soft cloth thathas been soaked in soapy water (always useneutral detergent) and wrung out thoroughly.Never use substances such as benzene oralcohol, as this may cause the housing to bemarred or paint to peel off.● LCD screen dirtNever rub or strike the LCD screen with anything hard, as this may result inscratches on the screen or breakage.● Keypad dirtWhen cleaning the keypad, do not scrub the surface too hard or pull on the keys, asthis may break the keys.● Barcode reading window dirtAny dirt or dust adhering to the clear plate of the barcode reading window willadversely affect reading performance.When using in dusty areas, perform periodic inspections to check whether any dusthas accumulated on the clear plate of the barcode reading window, and if so, firstblow the dust away with an airbrush, and then gently wipe the plate with a cottonswab or similar soft object.If sand or hard particles have accumulated, rubbing the plate will result in scratches.Blow the particles away with an airbrush or wipe with a soft brush.