Brocade Communications Systems 53-1002373-02 Removing Brocade MLXe-32 router DC power supplies

Installing a Brocade MLXe-32 router 2

CAUTION

For the NEBS-compliant installation of 32-slot routers with AC and DC systems, use a ground wire of at least 2 American Wire Gauge (AWG). The ground wire should have an agency-approved crimped connector (provided with the device) attached to one end, with the other end attached to building ground. The connector must be crimped with the proper tool, allowing it to be connected to both ground screws on the enclosure. Before crimping the ground wire into the provided ground lug, ensure the bare copper wire has been cleaned and antioxidant is applied to the bare wire.

CAUTION

To ensure adequate bonding when attaching the ground lug, a minimum of 20 PSI of torque is required to be applied to the mounting hardware used to attach the ground lug.

FIGURE 104 Crimping the power supply wire in the lug

		2
1	2	1
1 AWG power supply wire:		2 Power lug
for 2400W power supply, use#4 AWG
for 3000W power supply, use #2 AWG

4.Reconnect the power lugs to the power supply unit.

5.Connect the -48V wire to the negative terminal and the 0V wire to the positive terminal.

NOTE

DC return must be isolated from the router ground (DC-I) when making connections to the connections to the power supply.

6.Replace the safety cover. Refer to Figure .

This equipment installation must meet NEC/CEC code requirements. Consult local authorities for regulations.

Removing Brocade MLXe-32 router DC power supplies

Follow these steps to remove a 2400W DC power supply in a Brocade MLXe-32 router:

1.Ensure the main DC power breaker is OFF.

2.Use a #1 Phillips screwdriver to remove screw that secures the safety cover, as shown in Figure 102 on page 138. Remove the safety cover.

3.Use a #2 Phillips screwdriver to remove the screws securing the power lugs. Refer to Figure 103 on page 138.

4.Pull down on handle to remove power supply. Refer to Figure 100 on page 136.

Brocade MLX Series and Brocade NetIron XMR Hardware Installation Guide	139
53-1002373-02