PSU Installation Guidelines• The C9010 requires the use of at least one power supply for normal operation. Dell Networkingrecommends using additional power supplies for redundancy depending on the maximum systempower that is required and the local power grid voltage (100~120Vac/200~240Vac).• C9010 power supplies do not support a combination of power grid types. For example, all PSUs in aC9010 should be powered either by 200~240Vac or 100~120Vac, but not both. Do not mix utilityinput.• To protect against high-voltage shock, install a power supply blank in all unused power supply slots.• Connect the AC power supply to the appropriate branch circuit protection as defined by your localelectrical codes.• Verify that the remote power source complies with the system input power specifications.WARNING: Use only the AC power cord supplied with the AC power supply. Do not supply powerto your system until you install the power supplies, fan tray, route process modules (RPMs) andlinecards.WARNING: The C9010 relies on the building's installation for short-circuit (overcurrent)protection. Dell Networking recommends using a fuse or circuit breaker of 120 VAC, 20 A U.S.(240 VAC, 20 A international) for AC input on each power supply to ensure its maximum powercapacity.WARNING: The C9010 does not have a main disconnect device. You must provide a suitabledisconnecting device in the building installation. Ensure you locate and install the device near theequipment and that it is easily accessible.WARNING: The C9010 operates in either of two voltage ranges. The following lists the differentpower supply configuration the C9010 supports. As a safety precaution, do not install more thanthe recommended maximum number of PSUs, as this causes high leakage current. Install blankpanels in all unused PSU slots.PSU Installation Procedure1. Verify that the PSU switch is in the OFF (down) position.2. Slide the first power supply into the left-most power supply slot (PSU 0) until the latch (item 1 inFigure 22) snaps in place. Refer to C9010 Hardware Description for the location of PSU slot numbers.3. Plug an AC power cord into the front of the power supply.4. Plug the power cord into an AC power outlet.5. Repeat Steps 1 to 4 to install additional AC power supplies of the same wattage. Install eachadditional power supply in the left-most available PSU slot; for example, install the second powersupply in PSU slot 1, the third power supply in PSU slot 2, and the fourth power supply in PSU slot 3.6. Install a blank to cover any open PSU slot.Installing the Hardware 29REGULATORY DRAFT 11-4-14