Stacking Units; Spot Checks - 3Com 3C510510B User Manual

Positioning Hub TR
The Hub TR is capable of supporting up to 20 units in a single managed
stack, however, when deciding where to set up the Hub TR be sure to
consider the following:
It is accessible and cables can be connected easily.
Cabling is away from:
Sources of electrical noise such as radios, transmitters and
broadband amplifiers.
Power lines and fluorescent lighting fixtures.
Water or moisture cannot enter the case of the unit.
Air flow around the unit and through the vents in the side of the
case is not restricted (3Com recommend that you provide a
minimum of 25mm (1 inch) clearance).
To prolong the operational life of your units:
Never stack units more than eight high if free standing.
Do not place objects on top of any unit or stack.
Do not obstruct any vents at the sides of the case.
Do not mount units on the floor. (Nicht als Boden-Standgerät
Geeignet)
Rack Mounting
The Hub TR can be mounted in a standard 19-inch equipment rack.
Please refer to the Rack Mounting Kit instructions before mounting units.
Power Up
Proceed with the following steps to power up the Hub TR.
Check the network connections and cables. See item 14 or 15.
Check the cascade cables if in a stack. See item 18.
Connect the power supply cable to the appropriate power socket
on the rear panel of the unit, see item 12 or 13.
Connect the AC plug into a three-pronged grounded AC power
source.
For use with RPS — Connect the RPS power cord to the RPS port.
See Item 13.
WARNING:
Do not connect the AC power cable in this
configuration. When the Hub TR is powered up, the Power LED
on the front panel should be lit green.

Spot Checks

At frequent intervals you should visually check the Hub TR. Regular
checks can give you an early warning of a possible failure; any problems
can then be attended to when there will be least effect on users. Check
the following:
Cabling Check that all external cabling connections are
secure and that no cables are pulled taut.
Cooling fans Check that the cooling fans are operating and
are not obstructed. The fans are fitted to the
right hand side of the unit when viewed from
the front.
Add-in Modules Check that the add-in modules (Network
Management Module or Ring in/Ring Out
module) are connected securely. Refer to the
guide provided with the each module.
Rack or Wall Mounting
The Hub TR can be mounted in a 19 inch equipment rack or else
wall-mounted using the SuperStack II Rack Mounting Kit. See Rack
Mounting Kit Instructions overleaf.

Stacking Units

The Hub TR can be linked to other Hub TR units to form a stack, or can
be part of a mixed stack, including the following products:
LinkBuilder FMS TR (12-port) (#3C510500)
LinkBuilder FMS TR (24-port) (#3C510501)
LinkBuilder FMS TR 12 (#3C510510)
LinkBuilder FMS TR 24 (#3C510511)
Managing with an Network Management Module
For rack mounted stacks
For free standing stacks
What To Do Next?
If the Hub TR fails to operate successfully, contact your supplier with the
following information before returning the unit:
Product number
Serial number
A brief description of the fault
When returning any equipment to your supplier make sure the
equipment is packed suitably for transit.
The module can be fitted to an Hub TR at
any position in the stack.
The module can be fitted to an Hub TR at
any position in the stack.