IBM 1269-3S2, Инструкция по установке, обслуживанию и эксплуатации

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IBM System Storage DCS9900 1269-3S2 Storage Expansion Unit Installation, Service, and User Guide
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Rack System Precautions
The following safety requirements must be considered when the product is mounted in a rack:
• The rack design should incorporate stabilizing features suitable to prevent the rack from tipping or
being pushed over during installation or in normal use.
• When loading a rack with the units, fill the rack from the bottom up and empty from the top down.
• System must be operated with low pressure rear exhaust installation. (Back pressure created by rack
doors and obstacles should not exceed 5 pascals [0.5mm Water gauge].)
• The rack design should take into consideration the maximum operating ambient temperature for the
unit, which is 32°C.
• The rack should have a safe electrical distribution system. It must provide overcurrent protection for
the unit and must not be overloaded by the total number of units installed in the rack. Consideration
of the electrical power consumption rating shown on the nameplate should be used when addressing
these concerns.
• The electrical distribution system must provide a reliable earth grounding for each unit and the rack.
• Each power supply in each unit has an earth leakage current of 1.8mA. The design of the electrical
distribution system must take into consideration the total earth leakage current from all the power
supplies in all the units. The rack will require labelling with “HIGH LEAKAGE CURRENT. Earth
connection essential before connecting supply”.
• The rack when configured with the units must meet the safety requirements of UL 60950 and IEC
60950.
ESD Precautions
Caution ! It is recommended that you wear a working (examine before wearing) anti-static wrist or
ankle strap and observe all conventional ESD precautions when handling Chassis slug-in
modules and components. Avoid contact with backplane components, module connectors,
etc.
Do not slide more than one product enclosure chassis out of the
rack at a time, to avoid the rack from toppling over. !
Warning