Structural Maintenance
156
•
Use a soft bristled brush (DO NOT USE A
WIRE BRUSH) and brush the coil going with
the fins, across the tubes. The coil will clean
in a manner similar to the way lint cleans from
the lint trap of a household clothes dryer.
•
A vacuum with a soft attachment can be used
to suck the debris off the face as well as in the
fins and tubes from the air side of the coil.
•
Compressed air can be used and will work
best when blown thru the coil from the non-air
side when possible. Blowing thru from the
airside may imbed debris in the coil that was
only on the surface. It is recommended to start
with one of the first three options before using
compressed air if the non-air side is not
accessible. The angle at which the air should
be directed at the coil should not be less than
75 degrees (see Figure 245).
•
Power water sprayer may be used in pressures
under 600 psi. Water will work best when
blown thru the coil from the non-air side when
possible. Spraying thru from the airside may
imbed debris in the coil that was only on the
surface. It is recommended to start with one of
the first three options before using water if the
non-air side is not accessible. The angle at
which the water should be directed at the coil
should not be less than 75 degrees (see Figure
245).
Chemicals to aid in cleaning WILL VOID
WARRANTY and are NOT RECOMMENDED.
In some instances in may take a combination of
two methods to result in a clean coil. Such as, first
wiping the coil to clean the surface and then using
a vacuum, water or compressed air to clean down
in the fins. This will depend on the type of debris
that needs to be cleaned from the coil.
Be sure not to contact the coil with any hard
vacuum nozzle, air nozzle, or any other tool. This
will damage the tubes of the coil.
Figure 243: Coil Before Cleaning
Figure 244: Coil after Wiping
Right Hand Side with Cloth
