Fujitsu fi-4220C Operator's Manual page 22

Disconnect the power plug from the power outlet
when the scanner is not used for a long period of
time.
When the scanner is not used for a long period of
time, be sure to disconnect the power plug from the
power outlet for safety's sake.
Disconnect the power plug from the power outlet as
soon as you hear thunder.
If lightning strikes nearby, immediately disconnect
the AC cable from the power outlet. Leaving the
scanner turned ON might result in damage to the
scanner.
Do not install the scanner in the direct sunlight.
Do not install the scanner in the direct sunlight or
near heating apparatus. Doing so might cause heat
to build up inside the scanner, causing fire or
scanner trouble. Install the scanner in a well-
ventilated location.
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