(1) Usually it is only necessary to wipe or brush the dirt from the louver.
Dry cleaning solvent (Fed Spec P-D-680) used to clean parts is potentially dangerous to personnel
and property. Do not use near open flame or excessive heat. Flash point of solvent is 100° F to 138°F
(38°C to 59°C).
If the louver is extremely dirty, immerse in a detergent solution or dry cleaning solvent (Fed Spec P-
Agitate until dirt is removed, using a soft brush if necessary to loosen caked-on dirt.
Rinse in clear water or clean dry cleaning solvent.
c. Inspect. Check the louver for general condition. Bent louvers can usually be straightened with the
fingers. Refer requirements for further repair or replacement to direct support maintenance.
d. Servicing. Apply a few drops of light oil to all pivot points and bearing surfaces of the louvers. Wipe or
blot up all excess oil with a cloth.
e. Installation. Secure the louver with screws and Iockwashers.
4-21. SCREENS AND GUARDS
The condenser air inlet guard is located on the center rear of the unit. The fresh air ventilation guard is
located on the lower left rear of the unit. (See figure 4-13).