Carrier 31KAX - Manual (Page 9)

A89420
Fig. 17—Final Assembly Detail
5. Check to see if operation light is glowing. This indicates
proper power to the cells.
NOTE: Leave these Installation Instructions with the owner to
enable the owner to perform maintenance and routine
service.
STEP 5. MAINTENANCE AND ROUTINE SERVICE
Your new electronic air cleaner requires periodic maintenance
for optimum performance. You may perform this service or have
your serviceman handle it for you.
Cleaning of the cell assembly and prefilter is required two or
three times a year. Frequency will depend on size of home, num­
ber of occupants, smoking habits, etc.
The odor of ozone may be noticeable during operation of an
electronic air cleaner. A somewhat higher ozone generation rate
during the first week or two of operation may be caused by sharp
edges on some of the new high-voltage parts. Normal use dulls
these sharp edges in a short time.
The odor of ozone is detectable by an average person at levels as
low as 0.003 to 0.010 parts per million (PPM). The concentra­
tion of ozone produced in a home by an electronic air cleaner
ranges from 0.006 to 0.020 PPM. Average concentrations of
ozone in the air of major cities range from 0.020 to 0.040 PPM
and even higher. This is well above the level produced by an
electronic air cleaner.
Because normal maintenance (cleaning) is so simple, most
homeowners will choose to personally perform the necessary
operations.
Clean the unit where dust from air cleaner cells will not soil car­
pets or the floor.
A CAUTION
Before removing the electronic cells, be sure to deenergize
the system fan to avoid any possibility of circulating un­
filtered air back into the system.
To gain access to the prefilter and air cleaner cells, simply push
power switch to OFF position and remove the power door. Lay it
to one side. Pull out the first-stage prefilters and vacuum from
entering-air side, or wash in detergent and water. Let dry thor­
oughly. Reinstall. Do not spray prefilters with any filter
coatings.
A. Cleaning the Cell
For optimum performance, the electronic cells must be washed
regularly to remove the dirt cleaned from the air. The required
frequency of cell washing varies from one environment to an­
other, depending on a large number of variables. In nearly all
cases, the correct period is between 1 and 6 months. Where
building infiltration and internal generation of dust is low, as in
a smaller home, washing every 5 or 6 months may be adequate.
Where there is considerable infiltration, cooking, dust, tobacco
smoking, more frequent washing will be required. If a very
heavy buildup of dirt is found on the collector plates, or the cell
is not clean after washing, it should be cleaned more often. If
there is only light dirt on collector plates, the period between
washings can probably be lengthened. The electronic plate cells
may be washed a number of different ways, depending on home-
owner preference.
1. Automatic Dishwasher Washing —The easiest and most
convenient way to remove the accumulated dirt from the
plate-t 5 q>e electronic cells is to wash them in an automatic
dishwasher.
a. Place electronic cells on sides with ionizer section
down (airflow arrows pointing up) on lower rack of
dishwasher.
A CAUTION
Use care to avoid damage to the collector plates when plac­
ing the cells in the dishwasher.
NOTE: For some dishwashers with a center spray arm, it may
be necessary to remove the top basket to fit one or both cells
inside.
b. Use detergent in accordance with dishwasher manufac­
turer’s instructions.
c. Allow dishwasher to run through its complete wash cy­
cle. You may also allow it to run through its complete
dry cycle, although this is not necessary.
A CAUTION
The electronic cell will be very hot at the end of the dish­
washer’s cycle. Allow it to cool before handling. Hot water
may accumulate in the tubes supporting the collector
plates. Tip the cells so that these tubes will drain.
d. Dry ceils completely before turning on power to air
cleaner. This can be done by replacing cells in cabinet
and letting fan on system furnace or air handler run ap­
proximately 30 minutes before turning on power to air
cleaner.
e. With some dishwashers it may be necessary to rerun
complete cycle or rinse cycle after cells are removed if
homeowner notices dirt stains or residue inside
dishwasher.
2. Manual Washing —The electronic cells may be washed
manually by soaking them in a solution of automatic dish­
washer detergent.
Provide suitable container large enough to hold one or
both cells.
Select automatic dishwasher detergent that dissolves
readily in hot water. Depending on local water condi­
tions, some brands may form a precipitation or scum. If
a noticeable scum floats to surface, try another brand.
The brand the homeowner finds gives the best results
in his dishwasher will probably give best results wash­
ing the electronic cells.
a.
b.