RACK SYSTEM SAFETY PRECAUTIONS
The rack cabinet must be capable of supporting the total weight of the installed enclosure(s) and the design
should incorporate stabilizing features suitable to prevent the cabinet from tipping or being pushed over during
installation or in normal use.
When loading a rack cabinet with the units, fill from the bottom up and empty it from the top down.
Caution:
To avoid danger of the cabinet toppling over, under no circumstances should more than one
enclosure be drawn out of the cabinet at any one time.
The cabinet design should take into consideration the maximum operating ambient temperature for the unit,
which is 35°C.
The cabinet 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. When addressing these concerns,
consider the electrical power consumption rating shown on the product.
The electrical distribution system must provide a reliable ground for each unit and for the cabinet.
The power Supply Unit has a ground leakage current of 3.5mA. The design of the electrical distribution system
must take into consideration the total ground leakage current from all the power supplies in all the units.
When configured, the cabinet must meet the safety requirements of IEC 60950-1 2nd edition.
RACK INSTALLATION PRE-REQUISITES
The 4big Rack Office enclosure is designed for installation into an industry standard 19 inch rack cabinet subject
to the following requirements:
There must be a minimum depth of 430mm (16.9 inches) from rack posts to maximum extremity of enclosure
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(excluding rear cabling).
The rack must be able to support enclosures weighing up to 9.5kg (21lb).
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There must be a minimum gap of 25mm (1 inch) between the rack cover and front of the enclosure
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There must be a minimum gap of 50mm (2 inches) between the rear of the enclosure and the rear of the rack
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in order to maintain the correct air flow around the enclosure.
Use in a fully enclosed rack installation is not recommended.
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The rack design should take into consideration the maximum operating ambient temperature for the unit,
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which is 35°C.
The system must be operated with low pressure rear exhaust installation. The back pressure created by rack
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doors and obstacles must not exceed 5 pascals (0.5mm water gauge).
The top cover on the enclosure provides access to the RAM, hard drives, and riser card slot in the motherboard.
Caution:
Operation of the enclosure system with ANY modules missing will disrupt the airflow and the
system will not receive sufficient cooling. It is ESSENTIAL that all drives and other components are installed
before operating the unit.
Caution:
The top cover should be removed only when the unit has been turned off and allowed to cool down.
Potential hazards include rotating fans and hot surfaces.
LaCie
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