3Com SuperStack II 3000 TX, User Manual

Page: 108 / 144

A-2 A
PPENDIX
A: S
AFETY
I
NFORMATION
■
It is essential that the mains socket outlet is
installed near to the unit and is accessible. You
can only disconnect the unit by removing the
appliance coupler from the unit.
■
If the power supply plug is unsuitable and you
have to replace it, you may find other codings for
the respective connections. Connect the power
supply wires from the unit according to the fol-
lowing scheme:
■
Brown wire to the Live (Line) plug terminal
which may be marked with the letter L or colored
red.
■
Blue wire to the Neutral plug terminal which may
be marked with the letter N or colored black.
■
Yellow/green wire to the Earth (Ground) plug ter-
minal which may be marked with the letter E, or
the earth symbol or colored green/yellow.
■
This unit operates under SELV conditions (Safety
Extra Low Voltage) according to IEC 950, the
conditions of which are maintained only if the
equipment to which it is connected is also opera-
tional under SELV.
■
Under no circumstances should the unit be con-
nected to an A.C. outlet (power supply) without
an Earth (Ground) connection.
■
To comply with European safety standards, a
spare fuse must not be fitted to the appliance
inlet. Only fuses of the same manufacturer,
make and type should be used with the unit.
■
Ensure that the power supply lead is discon-
nected before opening the IEC connector fuse
cover or removing the cover of the unit.
■
France and Peru only:
■
This unit cannot be powered from IT (imped-
ance à la terre) supplies. If your supplies are of
the IT type, this unit should be powered by
230V (2P+T) via an isolation transformer ratio
1:1, with the secondary connection point
labelled Neutral, connected directly to Earth
(Ground).
■
U.K. only:
■
The Switch is covered by Oftel General
Approval, NS/G/12345/J/100003, for indirect
connection to a public telecommunications
system. This can only be achieved using the
console port on the unit and an approved
modem.
■
Do not remove the Plug-in Module or Transceiver
Module blanking plate with the power still con-
nected.