HP Visualize J5000 - Workstation Manual page 25

or combustible dust.
Airborne Contaminants
Airborne contaminants and particles of a certain size and hardness can
damage your computer system, particularly its disk drives. Corrosive
gases and/or solvent vapors such as those from liquid spirit duplicating
equipment and wet-process photo copiers can also cause damage. Some
of the most common contaminants are dust, clay dust, smoke, ash, eraser
debris, food crumbs, and salty air.
The Hewlett-Packard CE can assist you in determining whether or not
you need be concerned about airborne contamination. If contamination is
known or suspected, Hewlett-Packard will be available for consultation.
Temperature and Humidity
The temperature and humidity specifications for the J Class
workstations are contained in Appendix B of this manual. A good rule of
thumb is to avoid extremes of either temperature or humidity at your
computer site.
Temperature - The computer is air-cooled by fans which bring cool air
into the equipment, circulating it, and then exhausting whatever heat is
generated into the room. To ensure that airflow is not impeded, do not
place the workstation closer than three feet from walls or obstructions.
The computer system operates most reliably if room temperature is
maintained between 68 and 77˚ Fahrenheit (20 and 25˚ Celsius).
Table 2-2 lists the maximum heat dissipation for the J5xxx and the
J7xxx workstation. Appendix A of this manual contains heat
dissipation worksheets to assist you in determining your air conditioning
requirements. The Hewlett-Packard CE can assist you in determining
the heat dissipation of recommended system peripherals.
Table 2-2
Humidity - The computer humidity specifications are contained in
Appendix B of this manual. High humidity levels can cause improper
Chapter 2
Maximum Heat Dissipation
J5xxx
4163.61 BTU/hr
1050.06 KCAL/hr
Site Preparation Guidelines
Preparing for Installation
J7xxx
6577.89 BTU/hr
1658.94 KCAL/hr
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