Particulate
and gaseous contamination specifications
The following
table defines the limitations that help avoid any equipment damage
or failure from particulates and gaseous contamination. If the levels
of particulates or gaseous pollution exceed the specified limitations
and result in equipment damage or failure, you may need to rectify
the environmental conditions. Re-mediation of environmental conditions
is the responsibility of the customer.
Table 1. Particulate
contamination specificationsAir filtration specification: Data center air filtration as
defined by ISO Class 8 per ISO 14644-1 shpuld have a 95% upper confidence
limit. Note: This condition applies only to data center environments.
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 specification: 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 specification: 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.
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 2. Gaseous contamination
specificationsThe copper coupon corrosion rate is <300 Å/month per Class
G1 as defined by ANSI/ISA71.04-1985. The silver coupon corrosion rate
is <200 Å/month as defined by AHSRAE TC9.9.
Gaseous contamination
Specifications
Copper coupon corrosion rate
<300 Å/month per Class G1 as defined by ANSI/ISA71.04-1985.
Silver coupon corrosion rate
<200 Å/month as defined by AHSRAE TC9.9.
NOTE: Maximum
corrosive contaminant levels measured at ≤50% relative humidity.