3Com 520 User Manual
Page 14
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Do not push any objects into the openings of the
unit. Doing so can cause fire or electric shock by
shorting out internal components.
■
Avoid using a telephone, which is connected to the
unit (other than a cordless type), during an electrical
storm. There may be a remote risk of electric shock
from lightning.
■
Equipment connected to the Voice port must be
located in the same building as the unit.
■
Be sure nothing rests on the unit’s system cables and
that the cables are not located where they can be
stepped on and cause damage to the unit.
■
Keep the unit away from radiators and heat sources.
Allow 25mm (1 inch) around the unit to provide
adequate air circulation.
■
Install the unit in a clean area that is free from dust
or extreme temperatures.
■
The unit has been designed to be a free standing
unit or stacked with other OfficeConnect units. Do
not place anything else on top of the unit’s case.
■
Allow a clearance gap of at least a 150 mm from the
rear panel of the unit, to allow for cable access.
■
This product ostensibly complies with the
electro-magnetic compatibility (EMC) requirements
of EN 55022 Class A and EN 50082 (susceptibility).
However, to fully comply with Class B of EN55022 the
following prerequisites should be observed;
■
the WAN port must be attached to a screened
digital cable.
■
the ISDN cable must be used in conjunction with
a three turn ferrite.
■
This unit contains a lithium battery which is
attached to a microchip on the printed circuit board.
The defective battery must be disposed of safely
in-line with the manufacturers instructions.
■
Interconnecting directly, or by way of other
apparatus, to ports complying with SELV
requirements may produce hazardous conditions on
the network. Advice should be sought from a
competent engineer before such a connection is
made.
Rc.bk : RCATG.FRM Page 4 Thursday, July 10, 1997 9:53 AM