UNIT MAINTENANCE AIR CONDITIONER, HORIZONTAL, COMPACT

TM 9-4120-428-14

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UNIT MAINTENANCE

AIR CONDITIONER, HORIZONTAL, COMPACT

(NSN 4120-01-502-1319)

LUBRICATION INSTRUCTIONS

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 have permanently lubricated,

sealed bearings. No lubrication of these items is required.

MECHANICAL LUBRICATION

The only mechanical items that require lubrication are the conditioned air supply and return louvers, the condenser air

discharge louver and control linkages, and the devices that operate the fresh air damper door. These points should be checked

and lubricated as necessary, during preventative 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. 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 conditions.

END OF WORK PACKAGE

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