Hitachi WJ-0001S, User Manual

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2-1
Safety Information

Definitions and Symbols

HAZARDOUS HIGH VOLTAGE: Motor control equipment and electronic
controllers are connected to hazardous line voltages. When servicing drives and
electronic controllers, there may be exposed components with housing or protrusions at
or above line potential. Extreme care should be taken to protect against shock. Stand on
an insulating pad and make it a habit to use only one hand when checking components.
Always work with another person in case an emergency occurs. Disconnect power before
checking controllers or performing maintenance. Be sure equipment is properly
grounded. Wear safety glasses whenever working on electronic controllers or rotating
machinery.

WARNING: This equipment should be installed, adjusted, and serviced by qualified
electrical maintenance personnel familiar with the construction and operation of the
equipment and the hazards involved. Failure to observe this precaution could result in
bodily injury.

WARNING: For equipment protection, install a ground leakage type breaker with a
fast response circuit capable of handling large currents. The ground fault protection
circuit is not designed to protect against personal injury.

WARNING: HAZARDOUS OF ELECTRICAL SHOCK. DISCONNECT INCOMING
POWER BEFORE WORKING ON THIS CONTROL.

WARNING: Wait at least five (5) minutes after turning OFF the input power supply
before performing maintenance or an inspection. Otherwise, there is the danger of
electric shock.

CAUTION: Proper grounds, disconnecting devices and other safety devices and
their location are the responsibility of the user and are not provided by Hitachi Industrial
Equipment Systems Co., Ltd.

HIGH VOLTAGE: Dangerous voltage exists until power light is OFF. Wait at least
five (5) minutes after input power is disconnected before performing maintenance