Dell PowerEdge R940 Technical Manual

Also see for EMC PowerEdge R940: Installation and service manual Service Instruction Installation and service manual

Contents

Table 26. Particulate contamination specificationsParticulate contamination SpecificationsAir filtration Data center air filtration as defined by ISO Class 8 per ISO 14644-1 with a95% upper confidence limit.NOTE: This condition applies to data center environments only. Airfiltration requirements do not apply to IT equipment designed to beused outside a data center, in environments such as an office orfactory floor.NOTE: Air entering the data center must have MERV11 or MERV13filtration.Conductive dust Air must be free of conductive dust, zinc whiskers, or other conductiveparticles.NOTE: This condition applies to data center and non-data centerenvironments.Corrosive dust • Air must be free of corrosive dust.• Residual dust present in the air must have a deliquescent point less than60% relative humidity.NOTE: This condition applies to data center and non-data centerenvironments.Table 27. Gaseous contamination specificationsGaseous contamination SpecificationsCopper 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.Standard operating temperatureTable 28. Standard operating temperature specificationsStandard operating temperature SpecificationsContinuous operation (for altitude less than 950 m or 3117ft)10°C to 35°C (50°F to 95°F) with no direct sunlight on the equipment.Humidity percentage range 10% to 80% Relative Humidity with 26°C (78.8°F) maximum dew point.Appendix A. Additional specifications 43