Ericsson LBI-39001 Návod k obsluze stáhnout pdf (Strana 33)

4.4. PI/MUX CABINET

Specifications for the PI/MUX cabinet are shown below.

Height: 69-1/6”

Width: 24”

Depth: 24”

Weight: ∼350 lb

PI Cabinet Rack Units (RU): PI 4 RU

T1 MUX 11 RU or E1 MUX 6 RU

Power Supply 3 RU _____

18 RU or 13 RU

4.5. MD110 LIM

The MD110 system requires specific environmental conditions to ensure proper operation. The MD110 should not be

installed in a location where water sprinklers are present. As an alternative, Halon is the recommended fire protection system.

If static electricity is generated by the floor covering, the floor should be covered with suitable antistatic material to reduce

the risk of disturbances to the MD110.

The following normal operating and storage limits must be maintained to ensure proper MD110 operation:

Temperature range: 41 to 104°F (5 to 40°C)

Recommended state: 72 ± 2°F (22.2 ± 1.1°C)

Relative humidity range: 20 to 80%

Recommended state: 50 ± 10%

Before power is applied to an MD110 system, the equipment and the ambient room temperature/humidity must be stable

within the operating ranges. Measurements should be taken at least 60 inches above the floor and at least 20 inches from any

heat dissipating object. Typical heat dissipation for MD110 cabinets is 300W. This value recognizes that some of the power

supplied to the system rectifiers is actually dissipated over cabling and external station equipment.

The type of air filtration required for proper operation depends upon the dust and other particulate matter concentrated in

the equipment room. In a high particle-count atmosphere, use of a prefilter and a main filter in the room ventilation intake is

required. If salt air, corrosive gases, or other degrading pollutants are present, special filtering is required. Air in the

equipment room should circulate to prevent hot spots and to exhaust heated air. To be safe, circulation equipment should

change the equipment room air every 5 minutes. The circulating air should contain from 5 to 25% filtered fresh air.

Dimensions of MD110 equipment cabinets are as follows:

Height: 62.1"

Width: 27.1"

Depth: 13.4"

Floor loading is based on a 36-inch deep aisle working space in front of each cabinet and is derived from total cabinet

weight. The maximum weight of a fully loaded LIM cabinet is 440 lb. The cabinet floor loading for MD110/50 cabinets is

approximately 47.3 lb/sq ft.

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Ericsson LBI-39001 Návod k obsluze Strana 33