HP (Hewlett-Packard) 354 User Manual

Page of 140
Chapter 8 
Rack Mounting the HP Netserver (4-Post)  
74 
Safety Precautions 
Always keep the following safety and environmental issues in mind, especially if 
you install the HP Netserver in a non-HP rack environment: 
•  Optimum Operating Environment The optimum operating conditions for 
the HP Netserver is in an environmental controlled computer room with a 
temperature range of 20 to 22
° C (68 to 72° F) at 40 to 60% relative 
humidity. 
•  Maximum Ambient Temperature - Ensure the maximum ambient 
temperature does not exceed 35
° C (95° F). 
•  Elevated Operating Ambient Temperature - The ambient operating 
temperature within a closed or multi-unit rack assembly is likely to exceed 
the room's ambient temperature. Ensure the temperature within the rack itself 
does not exceed 35
° C (95° F). 
•  Reduced Air Flow - As you mount equipment in the rack, ensure you allow 
enough air flow for safe operation of the equipment. The Netserver's fans 
will only operate correctly if both front and rear doors of the rack allow free 
air flow (perforated openings), or are removed. 
•  Mechanical Loading - Uneven mechanical loading within the rack can cause 
hazardous conditions. To prevent uneven loading plan to place the heaviest 
components in the bottom of the rack, mounting all components as low in the 
rack as possible. 
•  Circuit Overloading - Ensure the total configuration of equipment in the 
rack does not overload the supply circuit. To this end, check the nameplate 
ratings on all equipment. Consider the effect of circuit overloading on 
overcurrent protection and supply wiring.  
•  Reliable Earth Grounding - Maintain reliable earth grounding of 
rack-mounted equipment. Give particular attention to supply connections that 
are not direct connections to the branch circuit: for example, using non-HP 
power strips.