Foundry Networks M2404F - Manual (Page 36)

Foundry NetIron M2404C/M2404F Metro Access Switches
January 2007 © 2007 Foundry Networks, Inc. 30
Hot-swapping a Power Supply
The switch has two redundant power supplies, and can be operated when only one power supply
is connected and powered on, or with both power supplies active. When both power supplies are
active, you can remove or replace one power supply unit without interrupting the operation of
the switch.
To extract a power-supply unit, release the panel screws on both sides of the unit and draw the
unit out of its slot. Insert the replacement unit in the slot, push it carefully all the way in and
fasten the panel screws.
Figure 16: Extracting a Power-Supply Unit
CAUTION To avoid improper ventilation to the switch’s internal circuitry and units,
never leave an empty slot uncovered. If a removed power supply is not
replaced, insert the supplied blank PSU filler into the slot and fasten it to
the panel with the two screws.
NOTE Before extracting a power supply unit while the switch is running, verify
that the other power supply is properly functioning, as indicated by the
corresponding PSU LEDs on the front panel.
REMEMBER:
Both power-supply fans may function even if only one power supply is
connected, to prevent overheating. A working fan does not indicate that the
power supply on which it is assembled is active.
Panel screws