Caution: The concentrator should have two fans running at all times to cool the unit properly. You should therefore have: (A) a power supply (with
Power Requirements
3Com recommends using a 15 ampere electrical wire (branch circuit) to supply power to the concentrator. This circuit must be grounded to a safety ground (protected earth ground), not to neutral that carries current back to the transformer. Do not use the electrical conduit pipe as the only means of grounding.
Rack Mount Installation Requirements
For rack mount installation of the ONline System Concentrator you need a standard
❑If the rack has an open back and sides:
–the rack must be bolted to the floor
–the top of the rack may need to be braced to the wall
❑the rack must be grounded
❑there must be 10.5" (26.7 cm) (6U) of vertical space in the rack for each
❑the unit location in the rack must be less than 6 feet (2 meters) from the nearest AC outlet
❑patch panels should already be installed in the rack for easier cable management
Installation and Troubleshooting 2 - 5