Requirement for batteries containing perchlorate
The following statement applies to users in the state of California, U.S.A.
California Perchlorate Information:
Products containing manganese dioxide lithium coin cell batteries may contain perchlorate.
Perchlorate Material - special handling may apply, See
www.dtsc.ca.gov/hazardouswaste/perchlorate
Particulate contamination
Attention:
Airborne particulates (including metal flakes or particles) and reactive gases acting alone or in
combination with other environmental factors such as humidity or temperature might pose a risk to the
server that is described in this document. Risks that are posed by the presence of excessive particulate
levels or concentrations of harmful gases include damage that might cause the server to malfunction or
cease functioning altogether. This specification sets forth limits for particulates and gases that are intended
to avoid such damage. The limits must not be viewed or used as definitive limits, because numerous
other factors, such as temperature or moisture content of the air, can influence the impact of particulates
or environmental corrosives and gaseous contaminant transfer. In the absence of specific limits that are
set forth in this document, you must implement practices that maintain particulate and gas levels that are
consistent with the protection of human health and safety. If Lenovo determines that the levels of particulates
or gases in your environment have caused damage to the server, Lenovo may condition provision of repair
or replacement of servers or parts on implementation of appropriate remedial measures to mitigate such
environmental contamination. Implementation of such remedial measures is a customer responsibility.
Table 1. 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.
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