Instruction manual

5. Expansion, Replacement and Removal
164
5.4 Expansion, Replacement and Removal of Power
Supplies
This section describes the procedures to expand, replace and remove the power supplies in the power redundancy
models.
Power supplied can be added, replaced, and removed while the switch is on.
After a power supply is removed, mount a fan unit. Otherwise, the air flow of the device
is not guaranteed and a failure might occur due to increasing temperatures inside the
device.
When a power supply is replaced while the switch is still on, do not leave the switch on for more
than three minutes without a power supply. Otherwise, a failure might occur due to increasing
temperatures inside the device.
When using only one power supply, insert the power supply into power supply slot 1 and the
fan unit to power supply slot 2.
To install the fan unit, see 5.5 Replacement of Fan Unit.
The figures below show the power supply for AC power supplies.The same procedures are
applicable to the power supply for DC power supplies.