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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 30. Limits for particulates and gases
Contaminant Limits
Particulate
• The room air must be continuously ltered with 40% atmospheric dust spot efciency
(MERV 9) according to ASHRAE Standard 52.2
1
.
• Air that enters a data center must be ltered to 99.97% efciency or greater, using
high-efciency particulate air (HEPA) lters 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 Efciency 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.
Turkish statement of compliance
The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use
of Certain Hazardous Substances in Electrical and Electronic Equipment (EEE).
Battery return program
This product may contain a lithium or lithium ion battery. Consult your user manual or service manual for
specic battery information. The battery must be recycled or disposed of properly. Recycling facilities may
not be available in your area. For information on disposal or batteries outside the United States, go to
http://www.lenovo.com/lenovo/environment or contact your local waste disposal facility.
Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/EC
concerning batteries and accumulators and waste batteries and accumulators. The Directive determines the
framework for the return and recycling of used batteries and accumulators as applicable throughout the
106 ThinkServer Installation and User Guide