NEC Express 5800/140Rb-4, Service Manual

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Fans
WARNING
To avoid injury do not contact moving fan blades.
Electrostatic Discharge (ESD)
CAUTION
Perform the procedures in this chapter only at an electrostatic discharge
(ESD) workstation, because the server components can be extremely
sensitive to ESD. If no such station is available, you can reduce the risk of
electrostatic discharge ESD damage by doing the following:
•
Wear an antistatic wrist strap and attach it to a metal part of the server.
•
Touch the metal on the server chassis before touching the server components.
•
Keep part of your body in contact with the metal server chassis to dissipate
the static charge while handling the components.
•
Avoid moving around unnecessarily.
•
Hold the server components (especially boards) only by the edges.
•
Place the server components on a grounded, static-free surface. Use a
conductive foam pad if available but not the component wrapper.
•
Do not slide the components over any surface.
Cooling and Airflow
CAUTION
For proper cooling and airflow, always install all access covers before
turning on the system. Operating the system for longer than five minutes
without the covers in place can cause overheating and damage to system
components.
Lifting and Moving
CAUTION
Do not attempt to lift or move the server by the handles on the power
supplies.
Equipment Rack Precautions
Follow the rack manufacturer’s safety and installation instructions for proper rack installation. The
following additional rack safety installation measures shall be considered: