•
Follow ESD-prevention procedures to avoid damage to equipment. Damage from static discharge can
cause immediate or intermittent equipment failure.
Locating for Proper Airflow
Ensure that the location of the Cisco ASR 1001-X Router has enough airflow to keep the system operating
within the environmental characteristics, and the air temperature is sufficient to compensate for the heat
dissipated by the system.
Avoid locating the Cisco ASR 1001-X Router in a location in which the chassis air intake vents could draw
in the exhaust air from adjacent equipment. Consider how the air flows through the router. The airflow direction
is front to back with ambient air drawn in from the venting located on the chassis
’
front sides.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage occurs when electronic cards or components are improperly handled
resulting in complete or intermittent failures. Static electricity can harm delicate components inside your
system. To prevent static damage, discharge static electricity from your body before you touch any of your
system components, such as a microprocessor. As you continue to work on your system, periodically touch
an unpainted metal surface on the computer chassis.
The following are guidelines for preventing ESD damage:
•
Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact. Before
removing a card from the chassis, connect the equipment end of the strap to the ESD plug at the bottom
of the chassis below the power entry modules.
•
Handle line cards by faceplates and carrier edges only; avoid touching the card components or connector
pins.
•
When removing a card, place the removed module component-side-up on an antistatic surface or in a
static-shielding bag. If the module id to be returned to the factory, immediately place it in a static-shielding
bag.
•
Avoid contact between the modules and clothing. The wrist strap protects the card from ESD voltages
only on the body; ESD voltages on clothing can still cause damage.
•
When transporting a sensitive component, place it in an antistatic container or packaging.
•
Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads and workbench
pads.
For safety, periodically check the resistance value of the antistatic strap. The measurement should be
between 1 and 10 ohms.
Caution
Always tighten the captive installation screws on all the system components when you are installing them.
These screws prevent accidental removal of the module, provide proper grounding for the system, and
help ensure that the bus connectors are properly seated in the backplane.
Caution
Cisco ASR 1001-X Router Hardware Installation Guide
40
Preparing Your Site for Installation
Preventing Electrostatic Discharge Damage