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Figure 3-12.Fluid reclamation system
MAIN CONTROL PANEL

Aviation Boatswains Mate E - Aviation theories and other practices
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The fluid cooler body is a cylindrical steel shell with two flanged ends. The body of the cooler has four equally spaced holes in each end to provide a means of draining and venting the cooler. These holes are normally closed with pipe plugs or vent valves. One end of the cooler has a cooler head assembly that forms a cap for one end of the body and provides an inlet for engine fluid coming from the accumulator. The cooler head assembly is a disc-shaped steel casting with an opening in the center, which is flanged to the fluid inlet piping. A copper annealed gasket is used as a seal between the cooler head and the body to prevent fluid leakage. The head is bolted to the body. The coolant (salt-water) flows through a tube assembly that consists of 107 U-shaped copper tubes supported inside the cooler body by three circular baffle plates. A tube head is bolted to the end of the cooler, opposite of the cooler head. A copper annealed gasket is used as a seal against fluid leakage between the tube head and the cooler body. Cooled fluid passes through the center of the tube head, through piping, to the retract valve. Two kidney-shaped manifolds (one inlet and one outlet manifold for the coolant to flow) are bolted to the outer face of the tube head. Saltwater piping leading to and from the inlet and outlet manifolds has shutoff valves, one intake and one discharge, that are used to throttle the flow of salt water and  maintain  the  desired  fluid  temperature.  Shutoff valves  are  also  provided  in  the  fluid  inlet  and  outlet lines to provide a means of isolating the fluid cooler in the  event  of  cooler  leakage,  and  a  bypass  valve  is provided to direct the fluid from the accumulator to the retract  valve  when  the  cooler  is  isolated.  To  prevent corrosion  within  the  cooler,  replaceable  anodes  are installed    at    both    the    saltwater    inlet    and    outlet manifolds. These anodes are periodically inspected and replaced   according   to   the   applicable   maintenance requirement card (MRC). A fluid temperature indicator is located on the engine control panel. AUXILIARY AIR FLASKS The auxiliary air flask provides a means of storing ship's air at 3,000 psi. In the event of a ship's air system failure,  the  air  stored  in  the  auxiliary  air  flask  can  be used to recharge the arresting engine. The   air   flask   is   a   cylindrical   container   with hemispherical ends. One end of the air flask is provided with a pipe tap for connecting an air line, which is used for charging and venting. A drainage vent is located on the underside of the air flask to drain condensate water. Air can be supplied to the air unit of the arresting engine   from   the   auxiliary   air   flask   by   use   of   the charging valve mounted on the main control panel. 3-16 FROM AIR EXPANSION FLASK FUSED SWITCH BOX TO VENT FROM HIGH-PRESSURE AIR SUPPLY CABLE ANCHOR DAMPER LIGHT BOX FROM AUXILIARY AIR SUPPLY ABEf0314 Figure 3-14.—Engine control panel.







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