NEC 140He - Manual (Page 64)

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Do not place the server in the following places. Placing the server in such places may cause malfunctions of the server.
„ Places with drastic changes in temperature (e.g., near a heater, air conditioner, or refrigerator)
„ Places with strong vibration
„ Places where corrosive gases (sulphur dioxide, hydrogen sulphide, nitrogen dioxide, chlorine, ammonia,
ozone, etc) exist.
And also, places where the air (or dust) includes components accelerating corrosion (ex. sulphur, sodium
chloride) or conductive metals.
„ On a non-anti-static carpet
„ Places with possibilities of falling objects
„ Places near a device generating intense magnetic field (such as a TV, radio, broadcast/communication antenna,
power transmission wire, and electromagnetic crane) is placed (If unavoidable, contact your service
representative to request proper shield construction.)
„ Places where a power outlet that shares the ground line with another (especially the one to which a device
with large power consumption is connected) must be used for the server
„ Places near equipment that generates power noise (e.g., contact spark at power-on/power off of commercial
power supply through a relay). If you must install the server close to such equipment, contact your service
representative for separate power cabling or noise filter installation.