PS1202A REPLACEMENT POWER SUPPLY KIT FOR ELECTRONIC AIR CLEANER
69-1136EF—01
6
Modification To Reduce Ozone
Odor
WARNING
ELECTRIC SHOCK HAZARD.
Can Cause Personal Injury
Always disconnect power before opening power
supply cover.
The electronic air cleaner generates a small amount of
ozone in normal operation. During the first or second
week 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 does not
exceed 0.050 ppm. As a comparison, the outdoor ozone
level in major cities is sometimes as high as 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.
To reduce ozone production about 20 to 25 percent
and reduce efficiency about seven to ten percent,
depending on actual airflow delivered by the fur-
nace blower:
a. Unplug or disconnect power supply to the air
cleaner.
b. Open the access door.
c. Remove the power box cover. See Fig. 1.
d. Locate J8 shorting bar on the power supply. See
Fig. 8. Remove the shorting bar and reinstall on
only one pin.
NOTE: The ozone will be reduced, and the short-
ing bar is available for reinstallation, if
needed.
e. Replace the power supply cover and access
door. Turn on the power.
f. Repeat the checkout procedure before leaving
the job.
Fig. 8. Move J8 shorting bar to reduce ozone
production about 20 to 25 percent.
M33490
5
P4
P1
P2
J3
J4
J8
P3
2.1mA
1.65mA
1.29mA
1.05mA
0.9mA
0.25mA
P5
T1
U4
8150V
7500V
P8
E6
E4
E5
E3
E1
E2
J1
J8 SHUNT IN OZONE
REDUCED POSITION
J8 SHUNT IN
NORMAL POSITION
J8
J8
J4
J4
J4 SHUNT IN
POSITION TO DISABLE
NEON LIGHT OUTPUT
J4 SHUNT IN POSITION
TO ENABLE NEON
LIGHT OUTPUT
