Casio HK1223 - Manual (Page 9)

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Potentially Explosive Atmospheres
Turn off your ruggedized laptop prior to entering any area with a potentially explosive
atmosphere. Do not remove, install, or charge batteries in such areas. Sparks in a
potentially explosive atmosphere can cause an explosion or fire resulting in bodily injury
or even death.
The areas with potentially explosive atmospheres referred to above include fuelling areas
such as below decks on boats, fuel or chemical transfer or storage facilities, areas where
the air contains chemicals or particles, such as grain, dust or metal powders. Areas with
potentially explosive atmospheres are often but not always posted.
Blasting Caps and Areas
To avoid possible interference with blasting operations, turn off your ruggedized laptop
when you are near electrical blasting caps, in a blasting area, or in areas posted: "Turn off
two-way radio". Obey all signs and instructions.
Operational Cautions
Antennas
Do not use the integrated radios of any ruggedized laptop that has a damaged antenna. If a
damaged antenna comes into contact with your skin, a minor burn can result.
Batteries
All batteries can cause property damage and/or bodily injury such as burns if conductive
materials such as jewelry, keys, or beaded chains touch exposed terminals. The
conductive material may complete an electrical circuit (short circuit) and become quite
hot. Exercise care in handling any charged battery, particularly when placing it inside a
pocket, purse, or other container with metal objects.