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◆◆◆ PRECAUTIONS BEFORE OPERATION ◆◆◆
■ Cautions for high voltage
High voltages from hundreds volts to tens of thousands volts are to be applied to
the electronic equipment such radio and radar devices. You do not face any
danger during normal operation, but sufficient cares are required for maintenance,
inspection and adjustment of their internal components. (Maintenance, check-up
and adjustment of the inside of the equipment are prohibited except by
maintenance specialists.)
High voltages of tens of thousands volts are so dangerous as to bring an
instantaneous death from electric shock, but even voltages of hundred volts may
sometimes lead to a death from electric shock. To prevent such an accident, make
it a rule to turn off the power switch, discharge capacitors with a wire surely
earthed on an end make sure that internal parts are no longer charged before you
touch any parts inside these devices. At the time, wearing dry cotton gloves
ensures you further to prevent such danger. It is also a necessary caution to put
one of your hands in the pocket and not to use your both hands at the same time.
It is also important to select a stable foothold always to prevent additional injuries
once you were shocked by electricity. If you were injured from electric shock,
disinfect the burn sufficiently and get it taken care of promptly.
■ What to do in case of electric shock
When finding a victim of electric shock, turn off the power source and earth the
circuit immediately.
If it is impossible to turn off the circuit, move the victim away promptly using
insulators such as dry wood plate and cloth without touching the victim directly.
In case of electric shock, breathing may stop suddenly if current flows to the
respiration center in the brain. If the shock is not so strong, artificial respiration
may recover breathing. When shocked by electricity, the victim will come to look
very bad with weak pulse or without beating, resulting in unconsciousness and
rigidity. In this case, it is necessary to perform an emergency measure
immediately.
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