11
SERVICE
CLEANING THE ELECTRONIC AIR CLEANER
The F72 is used to remove a variety of
contaminants from the air. In the process of
cleaning the air, however, parts of the air cleaner
will become dirty and the cleaning efficiency will
be lowered.
In order to maintain a high standard of reliability
and efficiency, it is necessary for the F72 to
receive periodic maintenance. Periodic
maintenance means cleaning the collector cells
and inspecting the electronic air cleaner both
visibly and with instruments. Service will be
required if the air cleaner seems damaged or
appears to be performing at substandard
efficiency.
Air Quality Engineering, Inc., recommends regular
cleaning and the use of an alkaline detergent
solution. The exact scheduling is a matter of
experience since each air cleaning situation
varies. Actual experience may dictate a greater or
lesser period between cleanings.
If, because of excessive buildup of captured
contaminants, the alkaline detergent solution
proves inadequate, the use of physical force (such
as high-pressure air, water or steam) or an acid
detergent solution may be required.
- CAUTION -
1. Be extremely careful when working with the
F72 cells and filters. The edges of the cells,
the filters, the collection plates and the ionizing
wires of the cells may be sharp.
2. When cleaning the cells and filters, be sure to
wear appropriate protective gear, especially
goggles and gloves. Skin contact with either
alkaline or acid detergent solution should be
avoided.
REMOVING THE ELECTRONIC CELLS AND
PREFILTERS
Before the electronic cells and prefilters can be
cleaned, they must be removed from the F72. Be
careful NOT to place a ladder or other heavy item
against the F72 unit, cells or prefilters. Electronic
air cleaners and their components are susceptible
to damage.
CLEANING THE PREFILTERS
The prefilters on an F72 do require cleaning. The
procedure is simple. Remove the prefilter and
shake the accumulated contaminants from it. If
this does not seem adequate, a vacuum can be
used; or the prefilter can be soaked in the alkaline
detergent solution. Do NOT soak the prefilter in
an acid detergent solution. Physical force
methods could also harm the prefilters.
THE ALKALINE DETERGENT SOLUTION
CLEANING METHOD
1. Provide a container large enough to hold the
electronic cells and prefilters to be cleaned.
2. Fill the container with detergent and hot water
sufficient to cover the electronic cell.
NOTE: Be careful to avoid prolonged skin
contact with the solution. Do NOT splash
solution in your eyes.
3. Soak the cells and prefilters in the solution for
about 15 minutes. The solution should be
agitated in some way, such as sloshing the
cells or prefilters or stirring the solution.
FIGURE 11
–
WHEN SOAKING THE CELL,
AGITATE THE WATER.
4. Remove the cells and prefilters from the
alkaline cleaning solution and place them in
another container of hot water (150°F to 170°F
[66°C to 77°C] for rinsing. The cells and
prefilters should be rinsed for 5 to 10 minutes.
