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 25. Limits for particulates and gases
• The room air must be continuously filtered with 40% atmospheric dust spot efficiency
• Air that enters a data center must be filtered to 99.97% efficiency or greater, using
• The deliquescent relative humidity of the particulate contamination must be more than 60%
• The room must be free of conductive contamination such as zinc whiskers.
• Copper: Class G1 as per ANSI/ISA 71.04-1985
• Silver: Corrosion rate of less than 300 Å in 30 days
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.
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.
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
specific 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.
US & Canada Only
ThinkServer TD230 Installation and User Guide
(MERV 9) according to ASHRAE Standard 52.2
high-efficiency particulate air (HEPA) filters that meet MIL-STD-282.