PRELIMINARY SERVICING AND ADJUSTMENT OF EQUIPMENT.

TM5-4120-384-14

4-4.

INSTALLATION

INSTRUCTIONS.-Continued

(7) Remove the condensate drain plug from lower left rear

If air conditioner is mounted in a location

corner of the unit.

where water pouring from this drain will be objectionable or create

The fitting used

a hazard, connect a drain line at this point.

Hose, rigid pipe

must have a male 1/8 - 27 NPT connection to unit.

or tubing can be used to direct drain water to a more desirable

disposal location.

(8) Connect

power

cable

proper

input

power

source

and

air

conditioner.

(9)

Run

operational

checks

accordance

with

paragraph

2-6.

4-5. PRELIMINARY SERVICING AND ADJUSTMENT OF EQUIPMENT.

Lubrication.

General.

The refrigerant compressor and its drive motor are

hermetically sealed in a canister.

The compressor is supplied with

The

a complete charge of oil and requires no lubrication.

evaporator and condenser fan motors also have permanently

lubricated, sealed bearings.

No lubrication of these items is

required.

The only mechanical items which may

Mechanical Lubrication.

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

A few drops of light oil should be

preventive maintenance service.

applied to pivot points, bearing surfaces, and linkages to prevent

Be sure to wipe off all excess

or eliminate stiffness or binding.

These items are in an area of

oil with a cloth or paper towel.

high volume airflow and excess oil will tend to attract and

Graphite may be

accumulate dust particles from the passing air.

used as an alternate lubricant during extreme cold weather

operation.

Change 2

4-19