TM 9-4120-402-14
4-5.
INSTALLATION INSTRUCTIONS. - continued
Figure 4-6. Fabric Cover Removal
(4)
The blast damper, when supplied, is designed to close and keep contaminated air from being drawn in
through the fresh air intake after a distant nuclear blast shock wave. It will also close if wind gusts go above 79 mph.
When installations using blast dampers have more than one air conditioner, fresh air covers should be installed on units
not equipped with blast dampers. For inspection, testing, adjustment, disassembly, repair, and reassembly, notify
supervisor. (See paragraph 5-34.)
(a)
Installation - blast damper
1
Using screwdriver, remove five pan head screws and flat washers and four flat head
screws from fresh air (inlet) screen. (See figure 4-8.)
2
Remove fresh air inlet screen. Store in safe place.
3
Remove fresh air filter. Store in safe place.
4
Using screwdriver, install blast damper assembly using same hardware that was removed
from fresh air (inlet) screen.
4-15
