Dell PowerEdge R340 EMC PowerEdge R340 Installation and Service Manual - Page 109

Table 35. Particulate contamination specifications, or MERV13 filtration.

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Table 35. Particulate contamination specifications Particulate contamination Air filtration Conductive dust Corrosive dust Specifications Data center air filtration as defined by ISO Class 8 per ISO 14644-1 with a 95% upper confidence limit. 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. Air must be free of conductive dust, zinc whiskers, or other conductive particles. NOTE: This condition applies to data center and nondata center environments. • 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 nondata center environments. Table 36. Gaseous contamination specifications Gaseous contamination Copper Coupon Corrosion Silver Coupon Corrosion Specifications

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Table 35. Particulate contamination specifications
Particulate contamination
Specifications
Air filtration
Data center air filtration as defined by ISO Class 8 per ISO 14644-1
with a 95% upper confidence limit.
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.
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.
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 36. Gaseous contamination specifications
Gaseous contamination
Specifications
Copper Coupon Corrosion
<300 Å/month per Class G1 as defined by ANSI/ISA71.04-1985.
Silver Coupon Corrosion
<200 Å/month as defined by AHSRAE TC9.9.
NOTE:
Maximum corrosive contaminant levels measured at ≤50% relative humidity.
Technical specifications
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