Instruction manual

Safety Information
Safety-13
When the power supply unit or the fan unit is replaced with the Switch turned
on, keep the time limit.
 When performing any of the following replacements with the switch turned on, do not
leave the switch for more than three minutes without a power supply unit or a fan unit.
Otherwise, a failure might occur due to increasing temperatures inside the Switch.
- When replacing a power supply unit or fan unit of redundant power models
(AX3630S and AX3640S)
- When replacing a fan unit of redundant power models (AX3650S)
 When the power supply unit or the fan unit is replaced with the main Switch turned on,
do not leave the Switch more than one minute without the power supply unit and the
fan unit. Otherwise, a failure might occur due to increasing temperatures inside the
Switch.
- When replacing a fan unit of redundant power models (AX3830S)
Turn off the power before installing or removing a power supply module.
 Before installing or removing a power supply module, turn off its power. Installing or
removing the module with the power supply module turned on causes a (Switch)
failure. The following label is attached to the EPU.
Turn off the power of the power supply modules before turning on the main
power switch of an EPU.
 Before setting the main power switch of the EPU to ON, you must set the power
switches of the installed power supply modules to OFF.
Do not turn off the main power switch of an EPU if the standby power supply
unit is used for the Switch.
 Turning off the main power switch of an EPU stops the supply of all standby power to
the Switch. Do not turn off the main power switch if a standby power supply unit is
being used for the Switch.