Replacing A Power Supply Unit - Avaya G450 Installing And Upgrading

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Important:
Replace the fan tray within one minute, to avoid overheating the G450. If the
Important:
G450 exceeds its allowed heat level, it shuts down.
If you remove and replace the fan tray, do not remove it again before waiting at
least five minutes.
Figure 40: Replacing the fan tray
1. To remove the fan tray:
a. Unscrew the two captive screws on the front panel of the fan tray.
b. Grasp the screws and pull the fan tray out of its slot.
2. To insert the fan tray:
a. Insert the fan tray all the way into the slot.
b. Close and tighten the two captive screws on the front panel.
The fans start operating immediately.
c. Wait one minute and then use the show platform fans CLI command to make
sure everything is OK.

Replacing a power supply unit

The G450 provides full redundant, load sharing power supply units (1 + 1). A single power
supply unit provides sufficient power for any G450 configuration. If you choose to install two
power supply units, they operate in a load sharing mode.
The G450 supports hot swap of the power supply unit. Even if you have only one PSU unit
installed, there is no need to power down or reset the G450 when replacing a faulty power unit.
You can install the replacement PSU in the second PWR slot, and it will become the active PSU
once you remove the faulty PSU.
Replacing a power supply unit
Issue 2 June 2008 97