INSPECTION - TM-9-4120-425-14-P0180

TM 9-4120-425-14&P

EVAPORATOR COIL UNIT SERVICE - Continued

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INSPECTION

Check to be sure power is disconnected.

Check for accumulated dirt. Clean if an accumulation of dirt is evident.

Check fins for dents, bent edges, or any condition that would block or distort airflow. Straighten all damaged fins.

WARNING

Compressed air used for cleaning purposes shall not exceed 30 psi (2.1 kg/ cm2).

CAUTION

Do not use steam to clean coil.

CLEANING

NOTE

Evaporator coils encounter extremely dirty and muddy conditions that may require washing with a

water hose and/or some chemical cleaner. Several types of foaming spray can coil cleaners that are

commercially available may be used.

Clean coil with a soft bristle brush, vacuum cleaner and brush attachment, 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. When using compressed air, wear safety glasses

or goggles. Dirt can be blown into your eyes.

END OF TASK

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