Owners Manual

Table 34. Expanded operating temperature specifications(continued)
Expanded operating
temperature
Specifications
For temperatures between 40°C and 45°C, derate maximum allowable temperature by 1°C per 125 m
(1°F per 228 ft) above 950 m (3.117 ft).
NOTE: When operating in the expanded temperature range, the performance of the system may be impacted.
NOTE: When operating in the expanded temperature range, ambient temperature warnings may be reported on the LCD
panel and in the System Event Log.
Expanded operating range
• The operating temperature is specified for a maximum altitude of 950 m for expanded operating range.
• Do not perform cold start at 5°C or lower, due to hard drive constraints.
• Redundant power supplies are required.
Expanded operating temperature restrictions
For more information about the expanded operating temperature restrictions, see the Installation and Service Manual for the PowerEdge
MX sleds at www.dell.com/poweredgemanuals.
Table 35. Expanded operating temperature restrictions
System C30 C35 C40E45
Dell EMC PowerEdge MX7000
including the fans, Management
Module, and PSUs
No restrictions No restrictions No restrictions
Fabrics A and B modules No restrictions No restrictions The MX9116n is not supported.
Fabric C I/O modules No restrictions No restrictions No restrictions
Particulate and gaseous contamination specifications
The following table defines the limitations that help avoid any damages to the IT equipment and/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. Remediation of environmental conditions is the responsibility of the customer.
Table 36. Particulate contamination specifications
Particulate
contamination
Specifications
Air Filtration
Data center air filtration defines that, 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 nondata 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 nondata center environments.
58 Technical specifications