TM 9-4120-402-14
4-51. CONDENSATE DRAIN TRAPS. - continued
Figure 4-52. Condensate Drain Traps
b. Clean.
(1) Pour some clean fresh water into condensate drip pan.
(2) If water does not flow out of the ends of the drain tubes or has a muddy appearance, insert a flexible wire up
the drain tube. Agitate until clog and accumulated debris is loose.
(3) Pour additional water in the drip pan until clean water pours from the ends of the drain tubes.
(4) Flush drains (1) and (2) with clean fresh water until clean. Insert a flexible wire through drain if needed to
remove clog. Be sure ball seats (end of drains where balls are inserted) are clean.
(5) Clean the springs (4) and balls (5).
(6) Clean any adhesive-sealant that may still be on ends of unit drain tubes and drains (1) and (2).
c. Inspect.
(1) Check cotter pins (3), springs (4), balls (5), and drains (1) and (2) for nicks, dents, and wear.
(2) Replace springs (4) if they are worn or no longer applying pressure to balls (5).
(3) Replace balls (5) if they are nicked or have any damage that would keep them from sealing property.
(4) Replace drains (1) and (2) if they are damaged or ball seats (end of drains where balls are inserted) are
nicked or have any damage that would keep them from sealing properly.
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