1 - 2 4TM 9-2350-267-20LOCATION AND DESCRIPTION OF MAJOR COMPONENTS AND SYSTEMS (CONTINUED)NBC VENTILATED FACE PIECE SYSTEMThe ventilated face piece system provides clean, filtered air forthe crew and personnel under NBC situations.The system is comprised of one air precleaner/particulate filterunit with four outlets, four M3 air heaters, four outlet connectorsand one NBC power control box.The air pre&aner/particulate filter is located in the lower leftrear of the crew compartment. The air heaters are mounted for-ward from the precleaned. The NBC power control box is attachedto the vehicle ceiling in the crew compartment on the left side.When not in use, hoses are connected to outlet connectors whichfunction as one-way valves allowing system air to escape, andpreventing contaminated air from entering through backflow.When in use, outlet connecting hoses are disconnected fromoutlet connectors and inserted in the canister packs of the facemasks used with the system.Each of the four filtered air outlets has an M3 air heaterconnected in line to allow air temperature to be individuallycontrolled by the user.
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