Manual

F300 ELECTRONIC AIR CLEANER
15 68-0240EF—06
Fig. 16. Use ohmmeter to check electronic cells for short
circuits.
Modification to Reduce Ozone Odor
CAUTION
Electric Shock Hazard.
Can cause personal injury.
Always disconnect power and open access door before
opening power supply cover.
The electronic air cleaner generates a small amount of ozone
in normal operation. During the first week or two of operation,
the amount may be higher because of sharp edges on some of
the new high voltage metal parts. Normal use quickly dulls
these edges.
The average person can detect the odor of ozone in
concentrations as low as 0.003 to 0.010 parts per million
(ppm). The electronic air cleaner contributes 0.005 to 0.010
ppm of ozone to the indoor air. The U.S. Food and Drug
Administration and Health and Welfare Canada recommend
that indoor ozone concentration should not exceed 0.050 ppm.
As a comparison, the outdoor ozone level in major cities is
sometimes as high 0.100 ppm.
However, if desired, the ozone generated by the air cleaner
can be reduced in one of two ways:
1. Install an activated carbon filter downstream from the air
cleaner. Make sure particles from the air filter cannot fall
into the air cleaner.
WARNING
Electric Shock Hazard.
Can cause personal injury.
Only a trained service technician should perform the
following procedure.
2. Move J5 shorting bar. This will reduce ozone production
about 20 to 25 percent and reduce efficiency about
seven to ten percent, depending on actual airflow deliv-
ered by the furnace blower.
a. Unplug or disconnect power supply to the air cleaner.
b. Open the access door.
c. Remove the power box cover. See Fig.17.
Fig. 17. Remove power box from air cleaner and remove cover.
COLLECTOR
TERMINAL
COLLECTOR
TERMINAL
IONIZER
TERMINAL
M6155
4
M20807
3
1
2
REMOVE POWER BOX FROM AIR CLEANER AND REMOVE THE COVER.