NetComm NCT-1000, User Manual

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NCT-1000/NCT-1020 User Guide 125
YML836 Rev2
Appendix F Replacing the AC/DC power supply
To replace the power supply, the manufacturer, or your service provider should provide the new power supply.
CAUTION: The input power switch is adjustable for high or low AC voltages. To use the power supply, an
appropriate voltage must be selected, to be compatible with your field application. Make sure that the power
switch is set to the correct voltage, before applying your field application. The setup switch is located on the
side of the power supply.
Voltage Setup Switch
Single power supply (no power redundancy)
Before using the new power supply, verify that the power supply voltage setting meets your field application.
1. Disconnect the power.
2. Disconnect the AC power line from the shelf rear panel.
3. Remove the malfunctioning power supply from the power supply shelf.
4. Place the new power supply on the power supply shelf. The voltage of the power supply should be set up
correctly.
5. Assemble it onto the shelf, from the bottom with four screws.
6. Connect the power connectors to the power terminals on the rear-panel of the shelf as follows:
Positive connector:
Connect to the terminal marked
PG
on the rear-panel.
Negative connector:
Connect to the terminal marked
-48V
on the rear-panel.
7. Connect the power connectors to the Power Supply; connect the positive power lead to the positive
terminal marked POS(+) , and connect the negative power lead to the terminal marked NEG(-) .
8. Turn on the power.
Note: The power supply may not vary from the one displayed above.