Owners Manual

Table 12. Particulate Contamination
NOTE: This section defines the limits to help avoid IT equipment damage and/or failure from particulates and gaseous
contamination. If it is determined that levels of particulates or gaseous pollution are beyond the limits specified below and
are the reason for the damage and/or failures to your equipment, it may be necessary for you to re-mediate the
environmental conditions that are causing the damage and/or failures. Re-mediation of environmental conditions will be
the responsibility of the customer.
Air Filtration
NOTE: 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.
Data center air filtration as defined by ISO Class 8 per ISO 14644-1
with a 95% upper confidence limit.
NOTE: Air entering the data center must have MERV11 or
MERV13 filtration.
Conductive Dust
NOTE: Applies to data center and non-data
center environments.
Air must be free of conductive dust, zinc whiskers, or other
conductive particles.
Corrosive Dust
NOTE: Applies to data center and non-data
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.
Table 12. Particulate Contamination
Gaseous Contamination
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
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.
38 Technical Specifications