CAUTION: Grounding conductors must be made of copper. Do not use aluminum conductors.
NOTE: Coat the one-hole lug with an anti-oxidant compound prior to crimping. Bring any unplated
mating surfaces to a shiny finish, and coat with an anti-oxidant prior to mating. Plated mating
surfaces must be clean and free from contamination.
1. Cut the ground cable to the desired length. The cable length must facilitate the proper operation of
fault interrupt circuits. Dell Networking recommends using the shortest cable route allowable.
2. Attach the one-hole lug to the chassis using an M4x0.7 screw with a captive internal tooth lock
washer, as shown. Torque the screw to 20 in-lbs.
Figure 3. Attach the Ground Cable
3. Attach the other end of the ground cable to a suitable ground point.
Important Points to Remember
The S4810–ON is designed to support two hot-swappable power supplies with integrated fans that
provide cooling for the chassis.
• The PSU slides into the slot smoothly. Do not force the PSU into a slot as this action may damage the
PSU or the S4810–ON chassis.
• The S4810–ON supports AC power supplies with two air-flow directions (I/O to Utility and Utility to
I/O). The S4810–ON does not support mixing PSU types. The fan airflow direction for both the PSUs
must be the same.
WARNING: Although the switch can run on one PSU, Dell Networking highly recommends using
two PSUs for full redundancy and proper cooling. To avoid overheating if the switch needs to run
with only one PSU for a time, Dell Networking recommends using PSU1 (on the left) and covering
the second PSU slot opening with a blank plate.
WARNING: The Utility panel consists of four slots numbered from 1 to 4. Insert PSUs in slots 1 and
4.
WARNING: ESD damage can occur if components are mishandled. Always wear an ESD-
preventive wrist or heel ground strap when handling the S4810–ON and its components.
WARNING: DO NOT mix airflow directions. Both power supplies must use the same airflow
direction (I/O to Utility or Utility to I/O).
WARNING: To prevent electrical shock, ensure the S4810–ON is grounded properly. If you
ground your equipment incorrectly, excessive emissions may result. To ensure the power cables
meet your local electrical requirements, use a qualified electrician.
10
Install the Hardware
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