Fujitsu fi-4340C Operator's Manual page 12

Do not use the equipment in areas with high levels of oil smoke,
steam, humidity, or dust.
Do not use the equipment if an abnormal smell is apparent.
Ensure that water or foreign matter does not enter the
equipment.
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Installation in areas with high levels of oil smoke, steam, humidity,
or dust may result in fire or electric shock.
If the equipment overheats, emits smoke or abnormal smells, or
makes abnormal noises, switch power OFF immediately and
remove the power plug from the socket.
Check that smoke is no longer emitted, and call your dealer or
maintenance service center. Do not attempt to repair the equipment
yourself under any circumstances.
Do not insert or drop metal objects or combustible objects into
openings (eg. ventilation openings).
Ensure that liquids (eg. coffee) and metal objects (eg. paper clips)
do not enter the equipment.
Do not spill or leak water onto the equipment.
If foreign matter (eg. water, other liquids, metal objects) enters the
equipment, switch power OFF immediately and remove the power
plug from the socket, and call your dealer or maintenance service
center. Particular care is required if children are in the vicinity.