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TM 9-4120-425-14&P
EVAPORATOR COIL UNIT SERVICE - Continued
0040-00
INSPECTION
1.
Check to be sure power is disconnected.
2.
Check for accumulated dirt. Clean if an accumulation of dirt is evident.
3.
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
0040-00-2

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