Lenovo 70LU, User Manual And Hardware Maintenance Manual

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Table 3. Limits for particulates and gases
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 contamination 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.
German Ordinance for Work gloss statement
The product is not suitable for use with visual display work place devices according to clause 2 of the
German Ordinance for Work with Visual Display Units.
Das Produkt ist nicht für den Einsatz an Bildschirmarbeitsplätzen im Sinne § 2 der
Bildschirmarbeitsverordnung geeignet.
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ThinkServer TS150 User Guide and Hardware Maintenance Manual