User's Manual

◆◆◆ 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.