15 68-0137B—2
F50F
SERVICE
REPLACING IONIZER WIRES
Broken or bent ionizer wires can cause an electrical
short to ground, often resulting in visible arcing or spark-
ing. Do not use cell(s) until broken wires are removed.
Cells can be used temporarily with one wire missing, but
replace the wire as soon as possible.
Replacement wires are supplied cut to length with eyelets
on both ends for easy installation. Order part no. 136434AA.
To install:
1. Hook the eyelet on one end of the wire over the
spring connector on one end of the cell. See Fig. 19. Be
careful to avoid damaging the spring connector or other
parts of the cell.
2. Hold the opposite eyelet with a needlenose pliers
and stretch the wire the length of the cell. Depress the
opposite spring connector and hook the eyelet over it.
3. Check the cell for short circuits using an ohmmeter.
Check the resistance between the frame of the cell and both
the ionizer and the collector contacts. In each case, the
resistance should be infinite. See Fig. 20.
Fig. 19—Replacing an ionizer wire.
M1540
IONIZER
WIRE
IONIZER
WIRE
NEEDLENOSE
PLIERS
SPRING
CONNECTORS
PRESS
DOWN
EYELETS
Fig. 20—Use ohmmeter to check electronic
cells for short circuits.
MODIFICATION TO REDUCE OZONE ODOR
WARNING
ELECTRIC SHOCK HAZARD.
CAN CAUSE PERSONAL INJURY.
Always disconnect power and open the access
door before opening the power supply cover.
The electronic air cleaner generates a small amount of
ozone during 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 dulls these edges quickly.
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 rec-
ommend that indoor ozone concentration should not ex-
ceed 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 can-
not fall into the air cleaner.
WARNING
ELECTRIC SHOCK HAZARD.
CAN CAUSE PERSONAL INJURY.
Only a trained service technician should per-
form the following procedure.
!
!
COLLECTOR
TERMINAL
COLLECTOR
TERMINAL
IONIZER
TERMINAL
M6155
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