This chapter contains important safety instructions for preventing bodily
injury and/or property damage. You are required to follow them.
Severity of bodily injury and/or property damage, which could result from incorrect
use of the Switching Hub, are explained below.
This symbol indicates a potential hazard
WARNING
that could result in serious injury or death.
This symbol indicates safety instructions.
CAUTION
The following symbols are used to classify and describe the type of instructions to
be observed.
This symbol is used to alert
users to what they must not do.
Deviation from these instructions could lead
to bodily injury and/or property damage.
This symbol is used to alert
users to what they must do.
WARNING
Do not use power supply other than AC 100 - 240 V.
Deviation could lead to fire, electric shock, and/or equipment failure.
Do not handle the power cord with wet hand.
Deviation could lead to electric shock, and/or equipment failure.
Do not handle this Switching Hub and connection cables during a
thunderstorm.
Deviation could lead to electric shock.
Do not disassemble and/or modify this Switching Hub.
Deviation could lead to fire, electric shock, and/or equipment failure.
Do not damage the power cord. Do not bend too tightly, stretch, twist, bundle
with other cord, pinch, put under a heavy object and/or heat it.
Damaged power cord could lead to fire, short, and/or electric shock.
Do not unplug nor plug in the power plug with wet hands.
Deviation could lead to electrical shock, and/or equipment failure.
Do not insert nor drop any foreign objects such as metal or readily combustible
things into the inside through the openings.
Deviation could lead to fire, electrical shock, and/or equipment failure.
Do not store or use the Switching Hub in places where it might get splashed
with liquids such as water, in places with a lot of humidity, in places with
conductive dust, or in places where there are corrosive and combustible gases.
Deviation could lead to fire, electrical shock, and/or equipment failure.
Do not store or use the Switching Hub in places where it will be exposed to
direct sunlight or high temperatures.
The temperature inside will rise, which may cause fire.
Do not store or use the Switching Hub in places where there are lots of
vibrations and impacts, or in unstable areas.
It might fall, which may cause injuries and/or equipment failure.
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WARNING
Do not put the Switching Hub into fire.
Deviation could lead to explosion and/or fire.
Do not insert nor drop any foreign objects such as metal or readily combustible
things into the inside through the openings, twisted pair ports, console ports,
SFP extension slots, or SD card slots.
Deviation could lead to fire, electrical shock, and/or equipment failure.
CAUTION
Handle the Switching Hub carefully so that fingers or hands may not be
damaged by twisted pair port, SFP extension slot, console port, or power
cord hook block.
Do not connect any other devices except for 10BASE-T/100BASE-TX/1000BASE-T
devices to the twisted pair ports.
Deviation could lead to equipment failure.
Do not insert any other modules except for the our optional SFP module
(PN54021K/PN54023K) to the SFP extension slots.
Unplug the power plug when there is a malfunction.
Deviation could lead to fire if the power is allowed to be supplied for extended periods
of time.
Be sure to connect the ground cable.
Otherwise this might cause electrical shocks, misoperations and malfunctions.
Connect the Switching Hub via the supplied power cord to the outlet which is
connected to the ground.
If the outlet is not connected to a ground, connect the ground cable to the ground
terminal screw.
Use the bundled power cord (AC 100 – 240 V specifications).
Deviation could lead to electric shock, malfunction, and/or equipment failure.
Unplug the power cord in case of equipment failure.
Deviation, such as keeping connected for a long time, could lead to fire.
Connect this Switching Hub to ground.
Deviation could lead to electric shock, malfunction, and/or equipment failure.
Connect the power cord firmly to the power port.
Deviation could lead to electric fire, shock, and/or malfunction.
Unplug the power cord if the STATUS LED blinks in orange (system fault).
Deviation, such as keeping connected for a long time, could lead to fire.
4
CAUTION
This Switching Hub is to be periodically serviced in order to maintain its
performance.
Please choose a product administrator, and have them be sure to implement
periodic maintenance. When doing maintenance, check the inspection chart that is
posted on our website which has the requisite items listed on it.
When using this Switching Hub to design systems, use it after applying
appropriate measures such as setting up redundant configurations.
Communications failures might be generated due to causes such as malfunctions or
misoperations while the Switching Hub is being used.
When using this Switching Hub for applications which require extremely high
reliability, be careful to expend all possible means to ensure safety and
reliability.
This Switching Hub was not designed nor manufactured with the intention that it be
used for applications (in use with railways, aviation, and medical care, etc. whereas
the influence rate due to communications failures is extremely high in regard to
systems that directly affect systems and human lives) which require extremely high
reliability.
It is strongly recommended that a lightning arrester (SPD) be installed on the
twisted pair port side and the power supply side of this Switching Hub.
Malfunctions might be caused due to overcurrent and overvoltage due to the effects
of lightning strikes.
It is recommended that this Switching Hub be replaced about five years after it
has been installed.
This may vary depending upon conditions such as utilisation rates and usage
environments, but performance might decrease due to the age-related degradation,
etc. of components.
Be careful in regards to environmental restrictions whereby the Switching Hub
can be used.
Please isolate the business power lines and communications lines. Isolate distribution
lines and other distribution lines, and low current power lines, optical fiber cables,
metallic water conduits, and gas conduits, etc. Noise may be generated in the
communications lines which might cause communications glitches.
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