HP 3000/9x9KS Series, Руководство по подготовке площадки и требованиям

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Sources of Electrical Interference
Convenience Wall Outlets
Power outlets for building maintenance equipment (i.e., vacuum cleaners, floor buffers, etc.) must be
wired from circuit breakers on a power panel completely separate from the computer system panel.
The ground connections from these outlets must be connected to a building power distribution panel;
not the computer system ground. Your electrician can verify whether maintenance outlets are on
separate panels and grounds.
NOTE
If a separate power source and ground are not provided, operation of
janitorial equipment can induce electrical noise and cause abnormal
operation of the computer system.
Lightning
In some geographical areas, it may by advisable to install lightning protection for safety of personnel
and to protect computer systems. In the United States (USA), the installation of lightning or surge
arrestors on power and communication lines is described in the National Electrical Code, Article 280.
The principles of lightning protection and personnel safety are outlined in detail in the lightning
protection code contained in the National Fire Protection Association (NFPA) Handbook. The
Hewlett-Packard CE can make lightning protection equipment recommendations.
Vibration
Continuous vibration can cause a degradation of mechanical parts. Vibration can cause data losses on
disc drives. Mechanical connections on printed circuit assemblies, connectors, cables, and backplane
wiring can also be adversely affected by vibration.
If you suspect that vibration may be a problem at your computer site, contact your Hewlett-Packard CE
or local sales office for assistance.