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|  MIL-C-52972A(ME)
tools. Gaskets and gasket sealer shall be nontoxic material. The final filter
shall have a carbon monoxide removal capability and the delivered air shall not
contain more than 10 parts per million carbon monoxide when 50 parts per million
carbon monoxide are introduced into the compressor intake in accordance with air
purity standards found in NAVSEA O994-LP-OO1-9O1O.
3.11 Pressure control valve. A pneumatic pressure control valve shall be
provided to prevent the passage of air through the filter bank at pressures less
than 2000 psi. The unit shall be equipped with a check valve to prevent reverse
air flow of downstream air.
3.12 Control panel. A control panel shall be provided for mounting any
gages, meters, and controls as specified herein. Gages, meters, and controls
shall be clearly identified and shall be mounted so that they will not be damaged
under any condition of compressor operation specified herein. All gages,
controls, and meters necessary for operation shall be accessible and visible to
a single operator standing on one side of the compressor. A schematic airflow
diagram shall be permanently affixed on or near the control panel. Labelling
shall comply with requirements in 3.17.1.
3.12.1 Instrumentation.
Pressure gages shall be provided to indicate filter
system and servicing line pressures. All pressure gages shall be the liquid
fill type mounted on the control panel and shall be isolated from vibration by
shock absorbing mounts. Each gage shall be vibration resistant and provisions
shall be made to prevent freezing of gages under conditions specified.
3.12.2 Filler hose. A filler hose shall be provided to connect the compressor
and diving tanks so that the tanks may be filled. The hose shall be a
commercial type hose, 15 feet or longer in length with a minimum 5000 psi
working pressure. The hose shall have a SCUBA industry standard quick release/
connect, male/female fittings at each end of the hose, an approved military
diving pressure gage, and a SCUBA fill yoke complete with integral fill valve
and bleeder valve.
3.13 Electromagnetic interference. The electromagnetic interference emission
characteristics of the compressor unit shall conform to MIL-STD-461, class III C.
3.14 Lubrication. All surfaces requiring lubrication shall be provided with
a means for lubricating. Only approved lubricants as specified in NAVSEA
O994-LP-OO1-9O1O shall be used on the life support portions of the compressor
unit.
3.14.1 Lubricants. The compressor unit shall operate as specified herein
when lubricated with military lubricants, conforming to MIL-L-17331 (2190 TEP),
normal operations. No substitutions will be allowed.
3.14.2 Lubrication fittings. Nonlife support lubrication fittings shall
conform to SAE J534. Fittings shall be located in a protected position and
shall be accessible to a grease gun conforming to MIL-G-3859 with 10-inch
flexible extension. Accessibility to fittings shall be provided without the
removal or adjustment of accessories or parts. Panels and plates equipped with
hand-operable , quick-disconnect fasteners may be removed to provide accessi-
bility.
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