Epson EPL-5000 Guide De L'utilisateur page 735

Caution:
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Place the printer where you can easily unplug the power
cord.
Avoid using or storing the printer in places subject to
rapid changes in temperature and humidity. Also keep it
away from direct sunlight, strong light, heat sources,
humidifiers, or dust.
Avoid using an electrical outlet that is controlled by wall
switches or automatic timers. Accidental disruption of
power can wipe out valuable information in your
computer's and printer's memory.
Avoid using outlets on the same circuit with large motors
or other appliances that might disturb the power supply.
Keep the entire computer and printer system away from
potential sources of interference, such as loudspeakers or
the base units of cordless telephones.