Cleaning The Printer Case - Epson EPL-1220 Reference Manual

Cleaning the printer case

If the printer's outer case is dirty or dusty, turn off the printer and
clean it with a well-wrung cloth.
c
Caution:
Never use alcohol or thinner to clean the printer cover; these
chemicals can damage the components and the case. Be careful
not to get water on the printer mechanism or any electronic
components.
Chapter 8 Cleaning and Transporting the Printer 149