HP ET115AV HP xw4400 Workstation - Service and Technical Reference Guide - Page 23

System fans, Resetting the power supply, Environmental specifications

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Table 1-17 Example 2 heat dissipation** (continued) Windows Busy Typ (S0) 574 BTU/hr. 564 BTU/hr. 578 BTU/hr. Windows Busy Max (S0) 621 BTU/hr. 611 BTU/hr. 625 BTU/hr. Sleep (S3)* 12.18 BTU/ 9.59 BTU/hr. 13.21 BTU/ 10.58 BTU/ 12.18 BTU/ 9.35 BTU/hr. hr. hr. hr. hr. Power off (S5) 6.11 BTU/hr. 3.48 BTU/hr. 7.13 BTU/hr. 4.54 BTU/hr. 5.97 BTU/hr. 3.41 BTU/hr. * Energy Star low energy mode. ** Heat dissipation is calculated based on the measured watts, assuming the service level is attained for one hour. This product is in compliance with US executive order 13221, WOL (wake on LAN) disabled. NOTE: When you power down your workstation with the power button on the front panel, the power consumption falls below 10 W. To reach zero power consumption, unplug the workstation from the power outlet or use a power strip with a switch. For additional information on power-saving features, see your operating system documentation. System fans The workstation includes a rear system fan, one memory fan, one CPU heatsink fan, one power supply fan, plus an optional front system fan is available for special considerations. Resetting the power supply If an overload triggers the power supply overload protection, all power is immediately disconnected. To reset the power supply unit: 1. Disconnect the power cord. 2. Determine what caused the overload and fix the problem. 3. Reconnect the power cord and reboot the workstation. When you power down the workstation through the operating system, power consumption falls below the low power consumption but does not reach zero. This on/off feature extends the life of the power supply. Environmental specifications This section describes environmental specifications of your workstation. Temperature Humidity Altitude Shock Operating: 5 to 35°C (40 to 95°F) Non-operating: -40 to 60°C (-40 to 140°F) NOTE: Derate by one degree C (1.4 degrees F) for every 305m (1,000 ft.) altitude over 1,524m (5,000 ft.). Operating: 8 to 85% RH, non-condensing Non-operating: 8 to 90% RH, non-condensing Operating: 0 to 3,048m (10,000 ft.) Non-operating: 0 to 9,144m (30,000 ft.) Operating: ½-sine: 40g, 2-3ms ENWW Product specifications 13

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Windows Busy Typ (S0)
574 BTU/hr.
564 BTU/hr.
578 BTU/hr.
Windows Busy Max (S0)
621 BTU/hr.
611 BTU/hr.
625 BTU/hr.
Sleep (S3)*
12.18 BTU/
hr.
9.59 BTU/hr.
13.21 BTU/
hr.
10.58 BTU/
hr.
12.18 BTU/
hr.
9.35 BTU/hr.
Power off (S5)
6.11 BTU/hr.
3.48 BTU/hr.
7.13 BTU/hr.
4.54 BTU/hr.
5.97 BTU/hr.
3.41 BTU/hr.
* Energy Star low energy mode.
** Heat dissipation is calculated based on the measured watts, assuming the service level is attained for one hour.
This product is in compliance with US executive order 13221, WOL (wake on LAN) disabled.
NOTE:
When you power down your workstation with the power button on the front panel, the power
consumption falls below 10 W. To reach zero power consumption, unplug the workstation from the power
outlet or use a power strip with a switch. For additional information on power-saving features, see your
operating system documentation.
System fans
The workstation includes a rear system fan, one memory fan, one CPU heatsink fan, one power supply
fan, plus an optional front system fan is available for special considerations.
Resetting the power supply
If an overload triggers the power supply overload protection, all power is immediately disconnected. To
reset the power supply unit:
1.
Disconnect the power cord.
2.
Determine what caused the overload and fix the problem.
3.
Reconnect the power cord and reboot the workstation.
When you power down the workstation through the operating system, power consumption falls below
the low power consumption but does not reach zero. This on/off feature extends the life of the power
supply.
Environmental specifications
This section describes environmental specifications of your workstation.
Temperature
Operating
: 5 to 35°C (40 to 95°F)
Non-operating
: -40 to 60°C (-40 to 140°F)
NOTE:
Derate by one degree C (1.4 degrees F) for every 305m (1,000 ft.)
altitude over 1,524m (5,000 ft.).
Humidity
Operating
: 8 to 85% RH, non-condensing
Non-operating
: 8 to 90% RH, non-condensing
Altitude
Operating:
0 to 3,048m (10,000 ft.)
Non-operating
: 0 to 9,144m (30,000 ft.)
Shock
Operating
: ½-sine: 40
g
, 2-3ms
Table 1-17
Example 2 heat dissipation** (continued)
ENWW
Product specifications
13