wMake sure that a fuse or circuit breaker no larger than 120 VAC, 15 A U.S. (240 VAC,
16 A international) is used on all current-carrying conductors on the power system
to which your appliances are connected.
wDo not work alone when working with high voltage components.
wAlways disconnect the appliance from power before removing or installing any
component. When disconnecting power, first shut down the appliance, and then
unplug the power cords of all the power supply units connected to the appliance. As
long as the power cord is plugged in, line voltages can be present in the power
supply, even when the power switch is OFF.
wDo not use mats designed to decrease static electrical discharge as protection from
electrical shock. Instead, use rubber mats that have been specifically designed as
electrical insulators.
wMake sure that the power source can handle the appliance's maximum power
consumption rating with no danger of an overload. Always unplug any appliance
before performing repairs or upgrades.
wDo not overload the wiring in your server cabinet or on your server room rack.
wDuring thunderstorms, or anticipated thunderstorms, avoid performing any hardware
repairs or upgrades until the danger of lightning has passed.
wWhen you dispose of an old appliance or any components, follow any local and
national laws on disposal of electronic waste.
wTo prevent possible explosions, replace expired batteries with the same model or a
manufacturer-recommended substitute and follow the manufacturer’s instructions
for battery replacement.
wNever remove a power supply cover or any sealed part that has the following label:
Appliance Precautions
wDetermine the placement of each component in the rack before you install the rail.
wInstall the heaviest appliance first, at the bottom of the rack, and then work
upward. Distribute the load on the rack evenly. An unbalanced rack is hazardous.
wAllow the power supply units and hard drives to cool before touching them.
wInstall the equipment near an electrical outlet for easy access.
wMount equipment in a rack with sufficient airflow for safe operation.
wFor a closed or multiple-unit rack assembly, the ambient operating temperature of
the rack environment might be greater than the ambient temperature of the room.
Citrix NetScaler Hardware Installation and Setup Guide
73