TM 9-4120-402-14
CHAPTER 3
OPERATOR'S MAINTENANCE INSTRUCTIONS
Paragraph
General......................................................................................................................................................3-1
Use of Troubleshooting Table ....................................................................................................................3-2
General......................................................................................................................................................3-3
Section I LUBRICATION INSTRUCTIONS
3-1.
GENERAL.
The Model F18T-MPI Air Conditioner and its major components are designed so that very little lubrication is required
during the serviceable lifetime. The refrigerant compressor and its drive motor are hermetically sealed in a single
canister; sealed bearings are incorporated in the drive motor and the compressor is supplied with a complete charge of
oil and requires no lubrication. Sealed bearings are incorporated in the evaporator and condenser fan motors. The only
operator lubrication required is that necessary to relieve stiffness or binding of the louver blades in the evaporator intake
and discharge grilles or the turn button fasteners associated with the fabric cover on the back of the cabinet. Sparingly
apply a light machine oil and work it into the joints or pivots involved. Blot up all excess oil with a cloth or paper towel.
Report stiffness or binding of all operational controls to supervisor.
Section II OPERATOR TROUBLESHOOTING
3-2.
USE OF TROUBLESHOOTING TABLE.
Table 3-1 contains troubleshooting information useful to operators in diagnosing and correcting malfunctions or
unsatisfactory operation of the air conditioner.
a.
The table lists the common malfunctions which you may find during the operation or maintenance of the air
conditioner or its components. You should perform the test/inspection and corrective actions in the order listed.
b.
This manual cannot list all malfunctions that may occur, nor all tests or inspections and corrective actions. If
a malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.
3-1
