Fujitsu FI-5900C Operator's Manual page 13

Do not install the device in locations subject to oil smoke, steam,
humidity, and dust.
Do not install the scanner in locations subject to oil smoke, steam, humidity, and dust.
Doing so might cause fire or electric shock.
Do not use the scanner if you smell a strange odor coming from the
scanner.
If you detect heat coming from the device or detect other problems such as smoke,
strange smells or noises, immediately turn off the scanner and disconnect its power plug.
Make sure that the smoking has stopped, and then contact the store where you
purchased the scanner or an authorized FUJITSU scanner service provider.
Turn the scanner OFF if it is damaged.
If the scanner is damaged for any reason, turn off the scanner and unplug the AC cable
before contacting the store where you purchased the scanner.
Do not put liquids inside the scanner.
Do not insert or drop metal objects into the scanner. Do not scan wet documents or
documents with paper clips or staples. Do not splash or allow the scanner to get wet.
If foreign objects (water, small metal objects, liquids, etc.) get inside the scanner,
immediately turn off the scanner and disconnect the power plug from the power outlet,
contact the store where you purchased the scanner or the Maintenance Service Center.
Pay particular attention to this warning in households where there are small children.
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