Difference between revisions of "AN~URC-32"
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Revision as of 01:13, 13 December 2016
Military HD-347/U Electronic Equipment Air Cooler (Collins Blower 1990-3)
Collins Blower 1990-3, shown in figure 20, is a centrifugal blower capable of delivering 125 cfm of air at a pressure equivalent to 1.83 inches of water. The 1990-3 includes a double-pole, single-throw switch which is actuated by air pressure. The switch contacts are used as interlocks for the primary power to the system. A block diagram of the 1990-3 is shown in figure 21. The unit mounts in a standard 19-inch open-type rack. Cooling air is supplied to the units mounted in the rack through a central air duct, All power and control connections are made through an 8-pin connector located on the top of the 1990-3. Access to components is obtained by removing the front cover and air filter.
Technical characteristics
- VOLTAGE SOURCE
- 115/230 Volts AC, 50 to 60 cps.
- POWER INPUT
- 215 watts at 1.0-in. water gauge pressure.
- OUTPUT CAPACITY
- 125 cfm at 1.83-in. water gauge static pressure.
- DIMENSIONS
- 8-7/8 in. high by 11-1/4 in. deep by 19 in, wide.
- WEIGHT
- 22 pounds.
- REQUIRED RACK SPACE
- 8-7/8 in,