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TM 9-4120-389-14
a. Inspection of Installed Coil
(1) Check for accumulated dirt. Clean if an accumulation of dirt is evident.
(2) Check fins for dents, bent edges, or any condition that would block or distort air flow. Straighten
all damaged fins with a plastic fin comb (Item 7, Appendix B).
WARNING
When using compressed air, wear safety glasses or goggles. Dirt can be blown into your eyes.
CAUTION
Compressed air used for cleaning purposes will not exceed 30 psi (2.1 kg/cm2).
CAUTION
Do not steam clean coil. Damage to coil may occur. Take care to avoid fin damage.
b. Cleaning. Clean coil with a soft bristle brush or use compressed air at 30 psi or less from the inside of
the unit to blow the dirt out.
c. Repair/Replacement. Should a leak or major damage be evident, contact your supervisor and Direct
Support Maintenance.
Follow-on procedures: 1. Install mist eliminator (See para. 4-20).
2. Install evaporator outlet louver (See para. 4-17).
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