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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
4-92. DRAIN AREAS.
This task covers:
a.
Inspection
b.
Service
INITIAL SETUP:
Tools
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Personnel: 1
Materials:
Corrosion preventative (Item 5, Appendix E)
Equipment Conditions:
WARNING
Disconnect input power to the air. conditioner before performing any internal maintenance. Voltages
used can KILL. Shutting the unit off at the control panel does not disconnect unit power.
1.
Disconnect air conditioner input power at source.
2.
Remove left front evaporator panel (para 4-23).
3.
Remove right front evaporator panel (para 4-25).
4.
Remove left front condenser panel (para 4-27).
5.
Remove right front condenser panel (para 4-28).
INSPECTION
1.
Check that drain areas are clean (see Figure 4-92).
2.
Check that drain areas do not contain water.
3.
Check drain pan for rust and corrosion. Apply corrosion preventative as required.
SERVICE
1.
Pour some clean fresh water into drain areas.
2.
If water does not freely flow out of drain tubes or has muddy appearance, insert flexible wire in drain tube.
Agitate until clog and accumulated debris are loose.
3.
Pour additional water in drain area until unrestricted flow of water pours from drain tubes.
4.
If water does not freely flow out of drain tube area, disconnect drain tubes from tee fitting, insert flexible wire in
drain line. Agitate until clog and accumulated debris are loose.
5.
Pour some clean fresh water into drain tube at tee fitting until unrestricted flow of clean water pours from drain
tube.
6.
Connect drain tubes.
4-180
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