TM9-4120-400-14
Solenoid Valve (Coil) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Pressure Cutout Switch (LPCO) Bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connectors (Installation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preparation for Storage or Shipment. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Preparation for Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section I LUBRICATION INSTRUCTIONS
a. General. The refrigerant compressor and its drive motor are hermetically sealed in a canister. The
compressor is supplied with a complete charge of oil and requires no lubrication. The evaporator and
condenser fan motors also have permanently lubricated, sealed bearings. No lubrication of these items is
required.
b. Mechanical Lubrication. The only mechanical items which may require lubrication are the conditioned air
supply and return louvers, the condenser air discharge louver and control linkages and the devices which
operate the fresh air damper door. These points should be checked and lubricated, as necessary, during
preventive maintenance service. A few drops of light oil should be applied to pivot points, bearing
surfaces, and linkages to prevent or eliminate stiffness or binding. Be sure to wipe off all excess oil with a
cloth or paper towel. These items are in an area of high volume airflow and excess oil will tend to attract
and accumulate dust particles from the passing air. Graphite may be used as an alternate lubricant during
extreme cold weather operation.
Section II REPAIR PARTS, SPECIAL TOOLS, TEST MEASUREMENT, AND DIAGNOSTIC
EQUIPMENT (TMDE), AND SUPPORT EQUIPMENT
GENERAL.
a. Repair parts are listed and illustrated in TM9-4120-400-24P. No special tools are required for maintenance
of the equipment. Test, maintenance, and diagnostic equipment (TMDE), and support equipment
include standard electrical test equipment found in any unit maintenance electric shop.
b. For authorized common tools and equipment refer to the Modified Table of Organization and Equipment
(MTOE) applicable to your unit.