TM 9-4120-360-14
CAUTION
There must be metal-to-metal contact between vertical and horizontal sections of-the RFI gasket
material surrounding the control panel opening.
(3) Cut five pieces of RFI gasket to length, as follows:
(a) Cut two pieces to the height of the control panel opening.
(b) Cut two pieces to the width of the control panel opening plus the additional thickness of the two
pieces cut previously.
(c) Cut one piece to the length of the bottom lip (offset) of the lower panel.
(4) Apply a coating of RFI adhesive to the mating surfaces of both the metal panel and the gasket material.
Let both surfaces air-dry until they are tacky but will not stick to the fingers. Carefully press each piece into firm contact
with the panel.
h. lnstallation. Place the lower lip of the lower panel behind the step in the base plate of the air conditioner. Press
the panel into position so that the panel fastener screws engage the sheet spring nuts on the casing. Tighten the screws.
4.11. CBR Cover (See figure 1-1).
a. Description. The chemical-biological -radiological (CBR) air filter connection to the air conditioner is
located in the upper left corner of the rear surface of the air conditioner. When CBR equipment is not connected. the
opening is closed by a sheetmetal cover, (figure 1-1).
b. Removal. Remove five screws from the rim of the CBR cover, and remove the cover.
c. inspection. Inspect the CBR cover for obvious damage. Repair if damage is minor. Replace if necessary.
d. Installation. Position the CBR cover on the air conditioner, and secure with five screws.
4.12. Fresh Air Screen (See figure 1-1).
a. Description. The fresh air screen is mounted on the upper right corner of the rear surface of the air
conditioner. It encloses the two refrigeration service valves, and screens out leaves and other debris from the fresh air
intake when the fresh air damper is open.
b. Removal. Remove five screws from the rim of the fresh sir screen. and remove the screen.
c. Inspection. Inspect the screen for broken or displaced wires or other damage. Replace the screen if damage is
evident.
d. lnstallation. Position the fresh air screen on the air conditioner, and secure with five screws.
4.13. Condenser Coil Guard (See figure 4-4).
a. Description. The condenser coil guard occupies the bottom one-third of the rear surface of the air
conditioner. It is aluminum fabrication, consisting of a grid of 3/16-inch aluminum rods in a frame of aluminum angle.
The face of the guard is covered with 16-mesh aluminum wire cloth to prevent the entry of leaves and other small debris.
The guard is secured to the casing of the air conditioner with screws and washers.
b. Removal. Remove four screws and flat washers from the top of the condenser coil guard frame. and four
screws, flat washers and lockwashers from the bottom of the frame. Pull the guard outward to remove.
c. Cleaning. Brush or blow loose dirt from the surface of the screen, then agitate the condenser coil guard in
detergent solution or dry cleaning solvent (Fed Spec P-D-680). Blow or wipe dry.
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