Switch zl Internal Power Supplies Installation Guide 2010-01

Safety Information

Grounding

These are safety class I products and have protective earthing terminals. There

must be an unin

terruptible safety earth ground from the main power source

to the product's input wiring terminals, power cord, or supplied power cord

set. Whenever it is likely that the protection has been impaired, disconnect

the power cord until the ground has been restored.

For LAN cable grounding:

■ If your LAN covers an area served by more than one power

distribution system, be sure their safety grounds are securely

interconnected.

■ LAN cables may occasionally be subject to hazardous transient

voltages (such as lightning or disturbances in the electrical utilities

power grid). Handle exposed metal components of the network with

caution.

Servicing

There are no user-serviceable parts inside these products. Any servicing,

dju

stment, maintenance, or repair must be performed only by service-trained

personnel.

These products do not have a power switch; they are powered on when the

power

cord is plugged in.

Documentation reference symbol. If the product is marked with this

symbol, refer to the product documentation to get more information

about the product.

WARNING A WARNING in the man

ual denotes a hazard that can cause injury

or death.

Caution A Caution in the manual denotes a hazard that can damage equip-

ment.

Do not proceed beyond a WARNI

NG or Caution notice until you

have understood the hazardous conditions and have taken appro-

priate steps.