AC or DC power supply replacement
CAUTION:
Disconnect the power cable before uninstalling the power supplies. Also, disconnect all power cables
before servicing.
NOTE:
The PSU slides into the slot smoothly. Do not force a PSU into a slot as this action may damage the PSU or the
Z9432F-ON switch.
NOTE:
If a PSU fails, you must replace the entire unit. There are no field serviceable components in the PSU. To request a
hardware replacement, see
NOTE:
If you use a single PSU, install a blank plate in the other PSU slot to ensure proper airflow for cooling. If you are only
using one power supply, install the power supply in the first slot, PSU1. Install a blank plate in the second slot, PSU2.
1. Disconnect the power cable from the PSU.
2. Use the grab handle to slide the PSU out of the power supply bay.
3. Use the grab handle on the replacement PSU to slide it into the power supply bay.
4. Attach the power cables to the replacement PSU.
NOTE:
The switch powers up when the cables are connected between the power supply and the power source.
DC power connections
Each DC PSU comes with one DC cable. The cable ships in a separate plastic bag.
CAUTION:
This product must be supplied by a DC power source rated -48 Vdc to -60 Vdc, 40 A minimum,
and Tma = 45-degree C minimum. The altitude of operation is 5000 m. The product must be supplied by a
UL-Listed DC power source that is separated from AC mains by double or reinforced insulation when the switch
is connected to DC power. For more information, contact your Dell sales representative.
NOTE:
You need a user-supplied Philips screwdriver to complete this installation.
1. Wiring block
2. DC cable
3. PSU socket
1. Strip a one-half inch section of insulation from each of the power connector wires.
2. Insert each of the bare wire power connector lengths into the wiring block.
The blue wire is -48 V, the black wire is the positive return, and the yellow and green wire is the ground wire, 10 AWG
minimum.
Power supplies
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