TM 9-4120-403-14
Inspection
(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.
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. Take care to avoid fin damage. Should a leak or major damage be evident, notify your supervisor.
CAUTION
DO NOT USE STEAM TO CLEAN COIL
Steam cleaning of coil may raise the temperature of refrigerant-22 to a degree where resulting pressures
in the refrigeration system could damage refrigeration components.
Follow-on procedures:
Install mist eliminator. (See para 4-24.)
4-148
