Epson EF21 - Cleaning the Projector Case; Air Filter and Vent Maintenance

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• To remove stubborn smudges, moisten a soft, lint-free cloth with lens cleaner and gently wipe the
lens. Do not spray any liquid directly on the lens.
Warning: Do not use a lens cleaner that contains flammable gas. The high heat generated by the
projector may cause a fire. If the lens is dusty, blow off dust using a blower, and then wipe the lens.
Caution: Do not wipe the lens immediately after turning off the projector; otherwise, the lens could be
damaged. Do not use glass cleaner or harsh materials to clean the lens and do not subject the lens to
any impacts; otherwise, you may damage the lens. Do not use canned air to clean the lens; the gases
may leave a residue. Avoid touching the lens with your bare hands to prevent fingerprints on or
damage to the lens surface. Do not use cleaning products that contain ammonia; the protective
coating on the lens could be damaged.
Parent topic: Projector Maintenance
Cleaning the Projector Case
Before cleaning the projector case, turn off the projector and unplug the power cord.
• To remove dust or dirt, use a soft, dry, lint-free cloth.
• To remove stubborn dirt, use a soft cloth moistened with water and mild soap. Do not spray liquid
directly on the projector.
Caution: Do not use wax, alcohol, benzine, paint thinner, or other chemicals to clean the projector
case. These can damage the case. Do not use canned air, or the gases may leave a flammable
residue.
Parent topic: Projector Maintenance
Air Filter and Vent Maintenance
Regular filter maintenance is important to maintain your projector. Clean the air filter when a message
appears telling you the temperature inside the projector has reached a high level. It is recommended that
you clean these parts about once every year. Clean them more often than this if you use the projector in
an environment that is dustier than expected. (Assuming the projector is used in an atmosphere in which
airborne particulate matter is less than 0.04 to 0.2mg/m3.)
Cleaning the Air Vents
Parent topic: Maintaining and Transporting the Projector