Figure 1-8(1). Conditioned Air System (Sheet 1 of 2). (TS 6115-590-12/1-81)

TM 5-6115-590-12 TS 6115-590-12/1-8(1) Figure 1-8(1). Conditioned Air System (Sheet 1 of 2). (TS 6115-590-12/1-8¹) cleaner ejector flows continually to scavenge dust and foreign material separated from the intake air by the engine air cleaner during engine operation. Compressed air to heat the water tank compartment is controlled by a thermostatic switch in the water tank compartment and a solenoid valve in the compressed air line. Compressed air to the vacuum system eductor and to the external pneumatic fitting is controlled by manually operated valves. g. Vacuum System (fig. 1-10 and 1-14). The vacuum system provides suction for use in other elements of the MUST hospital. The suction or partial vacuum is created by flowing compressed air through an eductor which creates a partial vacuum when air is passed through a venturi shaped section. The compressed air is exhausted from the eductor through a sound attenuated exhaust duct at the top of the power unit enclosure. The vacuum system is controlled by a manually operated valve in the compressed air line to the eductor The vacuum system consists of an eductor, manual control valve, a sound attenuated exhaust duct, and interconnecting ducts and fittings. h. Enclosure (fig. 1-1 and 1-2). The enclosure provides support and protection for the various systems and components of the power unit. The enclosure consists of a welded aluminum alloy frame with access doors and removable panels to provide access to controls and instrument panels and to all internal Change 6 1-15