Prevent Electrical Shock; Prevent Damage To Components - HP D5970A - NetServer - LCII Reference Manual

Chapter 1

Prevent Electrical Shock

WARNING Ensure site electrical circuits have reliable earth grounding.
Never operate products in any rack enclosure with the ground
connector disconnected. Although leakage current from any
one device may be minimal, cumulative leakage current of
equipment mounted in a rack may exceed 5mA, and could
reach 15mA. This level of current can be dangerous, unless a
reliable earth ground is in place. Thus, reliable ground
circuit continuity is vital to safe operation of this system.
WARNING
Prevent shock hazard by disconnecting power and telephone
cords when you service or install components.

Prevent Damage to Components

CAUTION Rack optimized products are sensitive to static electricity
(ESD). When installing components, take precautions against
ESD damage. Wear a wrist-strap and use a static-dissipating
work surface connected to the server chassis when handling
printed circuit boards, memory devices, and processor chips or
modules. Ensure that the metal of the wrist-strap contacts your
skin and that the alligator clip is attached to a static-neutral
surface.
CAUTION
Power up the components one at a time. Turning on an entire
rack at one time may create damaging and dangerous
electrical surges that could trip circuit breakers in the system.
Follow instructions in the section entitled "Power Up
Sequence" at the end of Chapter 3 to minimize current inrush.
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Preparation for Cabling the HP NetServer LC 2000r