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TM 9-4120-430-14
UNIT MAINTENANCE
AIR CONDITIONER, COMPACT, HORIZONTAL
CONDENSATE DRAIN TUBE ASSEMBLY MAINTENANCE
REMOVAL, INSPECTION, CLEANING, AND INSTALLATION
INITIAL SETUP:
Tools and Special Tools
Tool Kit, General Mechanics (Item 1, Table 2, WP 0067 00)
Materials/Parts
Water, warm soapy
Wire, soft 10-12 gage
Bleach and water solution, mild
Personnel Required
One
Equipment Condition
Top cover removed (WP 0018 00)
Evaporator inlet louver removed (WP 0020 00)
Mist eliminator removed (WP 0022 00)
WARNING
Ensure power source is disconnected.
REMOVAL
1. Detach the drain tubing (1 and 2) from the two condensate drains of the evaporator discharge compartment. See
figure 1.
2. Detach the drain tubing (3) from the condensate drain pipe (4) at the rear of the evaporator inlet compartment.
2. Remove drain tube assembly from inside evaporator inlet compartment.
INSPECTION AND CLEANING
1. Clean tubing using warm soapy water or replace. Rinse with mild solution of bleach and water. Replace tubing if
defective.
2. Clear obstructions from drains at bottom of evaporator compartment using soft wire. Rinse area with bleach solution.
3. Clear obstructions from drain outlets using soft wire. Insert wire from evaporator drain openings.
4. Replace damaged tubing, tee (7), or elbows (8 and 9) as necessary.
INSTALLATION
1. Reassemble tubing (1, 2, 3, 5, and 6) to elbows (8 and 9) and tee (7).
2. Install drain tube assembly by attaching tubing onto evaporator drains and rear drain pipe. Ensure tubing assembly
slopes to outlet drain without trapping condensate.
0024 00-1

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