3Com 1000 User Manual page 116

A-2 A A: S I
PPENDIX AFETY
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 col-
ored 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
terminal which may be marked with the letter
E, or the earth symbol, or colored green/yel-
low.
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.
The unit should never be connected 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.
NFORMATION
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 1000 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.