TM -5-4220-209-12&P CHAPTER I SECTION I. INTRODUCTION AND GENERAL INFORMATION 1-1.   INTRODUCTION.  This manual contains operation and     maintenance     instructions     with     illustrated     parts breakdown for the Type DMC-AA Air Compressor, Model 1C41-RDOW, Part Number 83207.  Leading features of the  unit  are  listed  in  Table  1-1.    Model  IC41-RDOW  air compressor    is    shown    in    Figure    1-1,    and    hereafter referred to as the air compressor unit. 1-2.   GENERAL  INFORMATION.  The air compressor unit  is  a  portable,  skid  mounted,  diesel  engine  driven, reciprocating,    air    compressor.        It    is    designed    for continuous operation at a rated capacity of 20 scfm (0.43 m3/s)  at  pressures  up  to  3,200  psig(22,058  kPa).    The compressed  air  is  filtered  to  a  solid  particle  size  of  10 microns.  Operating temperature  range  of  the  air  compressor  unit  is  -250  to 1200F  (-320  to  430C)  at  altitudes  up  to  5,000  feet  (1.5 Km).    The  air  compressor  unit  is  used  to  produce  air suitable for breathing purposes.  Air volume of 20 cfm at 3200   psi   (22,048   kPa)   is   available   for   air   breathing requirements. The air compressor unit is air transportable and is designed to operate under  extreme climactic conditions. NOTE The front of the air compressor unit contains the control panel.  When the operator is facing the control panel, the right-hand  side  is  to  the  operator’s  right,  the  left-hand side is to the operator’s left.  The rear is the engine end of the air compressor unit. Table 1-1.  Table of Lending Particulars ITEM AIR COMPRESSOR UNIT Specification Type Air volume Air pressure (max.) Power source Operating temperature range Mounting Electrical system Length (OA) Width (OA) Height (OA) Volume Weight (dry) AIR COMPRESSOR ASSEMBLY Type Number of cylinders Cooling DIESEL ENGINE ASSEMBLY Specification Type Number of cylinders Bore and stroke Displacement Operation speed horsepower Combustion Method Cooling Compression ratio PARTICULARS Military Specification MILC-52973 (ME) Reciprocating 20 scfm (0.57 m3/min) 3200 psig (22,048 kPa) Diesel engine -250F to 1200F (-320 to 430C) Frame shock mounted on skid. 12 vdc, neg.  gnd. 60 in.  (2,124 mm) 48 in.  (1,219 mm) 50 in.  (1,270 mm) 144 cu.  ft.  (4.07m3) 1,542 lbs.  (680.4 Kg) 4 stage, radial.  reciprocating 4 Forced air Military Standard MIL-STD-1410 4 stroke-cycle, reciprocating 2 4.20 in.  (108 mm) x 4.33 in.  (1 10 mm) 77.5 cu in.  (1.27 ltr) 2,150 rpm (2, 150 r/min) 25 HP Direct injection Forced air 18:1 1-1