Figure 23. S4112T–ON AC PSUs
1 AC PSUs
Figure 24. S4112T–ON DC PSUs
1
DC PSUs
The PSUs have an integrated fan that you cannot replace individually; if the fans integrated in a PSU fail, you must replace the entire PSU.
You can replace the fan trays individually. For fan tray replacement procedures, see Fans.
WARNING
: Prevent exposure and contact with hazardous voltages. Do not attempt to operate this switch with the safety cover
removed.
CAUTION: Remove the power cable from the PSU before removing the PSU. Also, do not connect the power cable before you
insert the PSU in the switch.
NOTE: To comply with the GR-1089 Lightning Criteria for Equipment Interfacing with AC Power Ports, use an external surge
protection device (SPD) at the AC input of the router.
AC power cable clips
After you connect the AC power cable to the switch, attach the metal wire clip to the switch over each AC power cable, as shown.
Power supplies
29
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