Dell PowerEdge R650 EMC Technical Specifications - Page 21

Table 26. Particulate contamination specifications (continued) Particulate contamination Specifications NOTE: This condition applies to data center environments only. Air filtration requirements do not apply to IT equipment designed to be used outside a data center, in environments such as an office or factory floor. NOTE: Air entering the data center must have MERV11 or MERV13 filtration. NOTE: Air filtering can also be accomplished by filtering room air with MERV8 filter per ANSI/ASHRAE Standard 127 Conductive dust Air must be free of conductive dust, zinc whiskers, or other conductive particles. NOTE: This condition applies to data center and non-data center environments. NOTE: Common sources of conductive dust include manufacturing processes, and zinc whiskers from the plating on the bottom of raised floor tiles Corrosive dust ● Air must be free of corrosive dust. ● Residual dust present in the air must have a deliquescent point less than 60% relative humidity. NOTE: This condition applies to data center and non-data center environments. Table 27. Gaseous contamination specifications Gaseous contamination Copper Coupon Corrosion rate Silver Coupon Corrosion rate Specifications