Dell PowerEdge MX840c EMC PowerEdge MX840c Installation and Service Manual - Page 134

Particulate and gaseous contamination specifications, Table 27. Relative humidity specifications

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Table 27. Relative humidity specifications Relative humidity Storage Operating Specifications 5% to 95% RH with 33°C (91°F) maximum dew point. Atmosphere must be non-condensing at all times. 10% to 80% relative humidity with 29°C (84.2°F) maximum dew point. Table 28. Maximum vibration specifications Maximum vibration Operating Storage Table 29. Maximum shock specifications Maximum shock Operating Storage Specifications 0.26 Grms at 5 Hz to 350 Hz (all operation orientations). 1.88 Grms at 10 Hz to 500 Hz for 15 min (all six sides tested). Specifications Six consecutively executed shock pulses in the positive and negative x, y, and z axes of 6 G for up to 11 ms. Six consecutively executed shock pulses in the positive and negative x, y, and z axes (one pulse on each side of the system) of 71 G for up to 2 ms. Table 30. Maximum altitude specifications Maximum altitude Operating Storage Specifications 30482000 m (10,0006560 ft) 12,000 m (39,370 ft) Table 31. Operating temperature derating specifications Operating temperature derating Specifications Up to 35°C (95°F) Maximum temperature is reduced by 1°C/300 m (1°F/547 ft) above 950 m (3,117 ft). 35°C to 40°C (95°F to 104°F) Maximum temperature is reduced by 1°C/175 m (1°F/319 ft) above 950 m (3,117 ft). 40°C to 45°C (104°F to 113°F) Maximum temperature is reduced by 1°C/125 m (1°F/228 ft) above 950 m (3,117 ft). 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 32. 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. 134 Technical specifications

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Table 27. Relative humidity specifications
Relative humidity
Specifications
Storage
5% to 95% RH with 33°C (91°F) maximum dew point. Atmosphere
must be non-condensing at all times.
Operating
10% to 80% relative humidity with 29°C (84.2°F) maximum dew
point.
Table 28. Maximum vibration specifications
Maximum vibration
Specifications
Operating
0.26 G
rms
at 5 Hz to 350 Hz (all operation orientations).
Storage
1.88 G
rms
at 10 Hz to 500 Hz for 15 min (all six sides tested).
Table 29. Maximum shock specifications
Maximum shock
Specifications
Operating
Six consecutively executed shock pulses in the positive and negative x,
y, and z axes of 6 G for up to 11 ms.
Storage
Six consecutively executed shock pulses in the positive and negative x,
y, and z axes (one pulse on each side of the system) of 71 G for up to
2 ms.
Table 30. Maximum altitude specifications
Maximum altitude
Specifications
Operating
30482000 m (10,0006560 ft)
Storage
12,000 m (39,370 ft)
Table 31. Operating temperature derating specifications
Operating temperature derating
Specifications
Up to 35°C (95°F)
Maximum temperature is reduced by 1°C/300 m (1°F/547 ft) above
950 m (3,117 ft).
35°C to 40°C (95°F to 104°F)
Maximum temperature is reduced by 1°C/175 m (1°F/319 ft) above
950 m (3,117 ft).
40°C to 45°C (104°F to 113°F)
Maximum temperature is reduced by 1°C/125 m (1°F/228 ft) above
950 m (3,117 ft).
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 32. 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.
134
Technical specifications