IBM BNT RackSwitch G8124DC, Installation Manual

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50
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BNT RackSwitch G8124 Installation Guide
replacement of devices or parts on implementation of appropriate remedial measures to mitigate
such environmental contamination. Implementation of such remedial measures is a customer
responsibility.
Documentation Format
The publications for this product are in Adobe Portable Document Format (PDF) and should be
compliant with accessibility standards. If you experience difficulties when you use the PDF files
and want to request a web-based format or accessible PDF document for a publication, direct your
mail to the following address:
Information Development
IBM Corporation
205/A015
3039 E. Cornwallis Road
P.O. Box 12195
Research Triangle Park, North Carolina 27709-2195
U.S.A.
Contaminant Limits
Particulate
„
The room air must be continuously filtered with 40% atmospheric
dust spot efficiency (MERV 9) according to ASHRAE Standard
52.2
1
.
„
Air that enters a data center must be filtered to 99.97% efficiency
or greater, using high-efficiency particulate air (HEPA) filters that
meet MIL-STD-282.
„
The deliquescent relative humidity of the particulate contamina-
tion must be more than 60%
2
.
„
The room must be free of conductive contamination such as zinc
whiskers.
Gaseous
„
Copper: Class G1 as per ANSI/ISA 71.04-1985
3
„
Silver: Corrosion rate of less than 300 Å in 30 days
1
ASHRAE 52.2-2008 - Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency
by Particle Size . Atlanta: American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
2
The deliquescent relative humidity of particulate contamination is the relative humidity at which the dust
absorbs enough water to become wet and promote ionic conduction.
3
ANSI/ISA-71.04-1985. Environmental conditions for process measurement and control systems: Airborne
contaminants . Instrument Society of America, Research Triangle Park, North Carolina, U.S.A.