Hitachi GR4000 Series Installation Manual page 12

GR4000 Installation Guide Version 1.00 - Preliminary
Do not use a power source or voltage that exceeds the specifications of the GR4000
or GS4000. Observe the instructions on the device chassis.
The current capacity of a distribution panel must be greater than that of the
operating current fed to the circuit breaker. If not, the circuit breaker may not work
properly when a circuit abnormality is detected. This condition could cause a fire.
Because DC power cables are connected using screw terminals instead of plugs,
attaching or removing a DC power cable to or from the device must be done by a
trained maintenance person. Mishandling DC power cables can cause a fire or an
electric shock.
Make sure that the circuit breaker of a power facility is set to OFF before attaching
or removing a DC power cable. Attaching or removing a DC power cable with the
circuit breaker set to ON will cause an electric shock.
When replacing a power supply unit or installing an additional one, remove the
power cable from the power supply unit to be replaced. Even if the power switch is
turned OFF, electricity is still present in the cables connected to the device, which
can cause a fire or electric shock.
When using a DC power cable, attach an insulating sheath at the cable terminal.
Using a unsheathed DC power cable could causes an electric shock.
After attaching a power cable, attach the cover to the terminal plate when using DC
power supply unit. Otherwise one of the power supply unit terminals could short
out or you could receive a shock.
Installing or replacing an optional unit, such as a network interface (NIF) must be
done by a trained maintenance person.
When connecting the device to the DC power supply unit, use the EARTH
(GROUND) terminal to avoid an electric shock or the trouble related to electric
noises.
To measure the voltage at a DC-powered device, the end terminal is attached to the
DC power unit. To avoid a fire or an electric shock, do not insert small pins or paper
clips into the terminal.
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