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TM 9-4120-389-14
Table 4-2. UNIT TROUBLESHOOTING-(cont.)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5.
Check to be sure that excessive cold, outside air is not being introduced through the fresh air
damper.
Fully close damper; then, if condition improves, adjust properly.
Step 6.
Check air flow out of evaporator outlet louver. If air flow volume is low:
a.
Adjust conditioned air (evaporator) intake louvers.
b.
Clean and service or replace air filter element. (See para. 4-19).
c.
Clean and service or replace mist eliminator. (See para. 4-20).
d.
Clean evaporator coil and entire evaporator section. (See para. 4-34).
4-55
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