Environmental Specifications; Ventilation Requirements; Location Requirements - 3Com 4005 Installation And Maintenance Manual

16 C 3: S R
HAPTER ITE EQUIREMENTS AND
Environmental
Specifications
Ventilation
Requirements
Location
Requirements
P S
RODUCT PECIFICATIONS
The site for the Switch 4005 should meet the environmental requirements shown
in Table 2:
Table 2 Environmental Specifications
1
Operating temperature
Operating humidity
Storage temperature
Storage humidity
1 Switch operating temperature is the temperature of the environment in which the switch is installed.
2 Ambient air is room air (more specifically, the air drawn into the switch by installed fans to cool
installed switch components).
The chassis operates with two fan trays. Each fan tray contains two fans. These
fans pull ambient air into the chassis from vents in the module faceplates and
expel hot air through vents in the back of the fan tray.
Although the fan trays provide the majority of the cooling, the power supplies also
contain fans. Each power supply pulls in ambient air through side vents in the
adjacent chassis wall and expels hot air through its vents in the back.
If a power supply overheats, it shuts itself off.
To ensure that adequate ventilation exists for the Switch 4005:
Maintain at least 7 cm (2.76 in.) between the sides of the chassis and the
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nearest wall or other vertical surface.
Maintain at least 8 cm (3 in.) between the front of the chassis and another
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vertical surface (such as a rack door).
Maintain at least 91.4 cm (36 in.) at the back of the chassis.
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CAUTION: Operate a Switch 4005 chassis with all four fans running. If one fan in
a fan tray fails, replace the fan tray as soon as possible.
Install the Switch 4005 in an area that meets the following location requirements:
The surface on which you want to place the Switch 4005 chassis is level.
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The power source is within approximately 2 meters (6.6 feet) of the location
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where you plan to install the Switch 4005.
Each of the power supplies is connected to its own dedicated circuit. Do not
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connect the power supplies to a single power strip.
There is a sufficient amount of space on each side of the Switch 4005 chassis
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to accommodate any cables along the side of the chassis.
There is at least 91.4 cm (36 in.) at the back of the chassis to service power
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supplies and fans.
If the chassis is the first device in your rack, then mount it about 10.2 cm (4 in.)
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above the floor.
2
0 °C to 50 °C ambient
(32 °F to 122 °F)
10% to 90%, noncondensing
-40 °C to 66 °C
(-40 °F to 151 °F)
10% to 90%, noncondensing