Troubleshooting guide

xxix
grounding could result in electric shock or failures due to electrical noise.
• When the Switch is connected to a DC power supply unit, always connect the ground
terminal for proper grounding. Using the Switch without grounding could result in electric
shock or failures due to electrical noise.
Connecting and disconnecting a DC power cable must be performed by a
trained technician or maintenance personnel.
• Connecting and disconnecting a DC power cable must be performed by a trained
technician or maintenance personnel. Terminal connections are required for connection of
the DC power cable to the power facility. For this reason, incorrect handling of the DC
power cable could result in fire or electric shock.
Set the power supply circuit breaker to OFF before connecting or
disconnecting the DC power cable.
• Set the power supply circuit breaker to OFF before connecting or disconnecting the DC
power cable. Connecting or disconnecting the cable with the circuit breaker set to ON
could result in an electric shock.
Place an insulation cover over the 0 V and -48 V terminals of DC power
cables.
• When using a DC power cable, place an insulation cover over the 0 V and -48 V terminals.
Using the terminals without an insulation cover could result in electric shock.
When using a DC power supply unit, do not use the terminal board with its
cover removed.
• When using a DC power supply unit, place a cover over the terminal board after
connecting the DC power cable. Using the terminal board without a cover could result in
electric shock.
Do not touch the voltage-measuring terminals.
• A power supply unit has voltage-measuring terminals. This terminal is used for a factory
inspection before shipment. Because of this, do not use this terminal. In addition, do not
insert anything with a sharp point, such as a pin or paper clip, into the voltage-measuring
terminals. Doing so could result in fire or electric shock.
Installing and carrying a Switch must be performed by at least three
people.
• The weight of the Switches is as shown in the table below. Installing and carrying a Switch
must be performed by at least three people. If these tasks are performed by fewer than three
people, the Switch might fall, resulting in serious injury.
Number of people required to carry a Switch
Note that the following label is attached to the Switch.
Model Weight Number of people required
AX6604S 45 kg Three or more people
AX6608S 64 kg