HP Z440, Z640, and Z840 Workstation Series - Maintenance and Service Guide
Ensuring proper ventilation
Proper ventilation for the system is important for workstation operation. Follow these guidelines:
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Operate the workstation on a sturdy, level surface.
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Provide at least 15.24 cm (6 inches) of clearance at the front and back of the workstation. (Workstation
models vary.)
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Ensure that the ambient air temperature falls within the environmental specications listed in this
document.
NOTE: The ambient upper limit of 35°C (95°F) is only good up to 1524 m (5000 ft) elevation. There is a
1°C (33.8°F) per 304.8 m (1000 ft) derating above 1524 m (5000 ft). So, at 3,048 m (10,000 ft), the
upper ambient air temperature limit is 30°C (86°F).
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For cabinet installation, ensure adequate cabinet ventilation and ensure that the ambient temperature
within the cabinet does not exceed specied limits.
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Never restrict the incoming or outgoing airow of the workstation by blocking any vents or air intakes,
as shown in the following gure.
22 Chapter 1 Hardware overview