Honeywell F57A Original Manual page 15

3. Check the cell for short circuits using an ohmmeter.
See Fig. 16. Check the resistance between the frame
of the cell and both the ionizer and the collector con-
tacts. In each case, the resistance should be infinite.
REPLACING AN IONIZER WIRE.
SPRING
CONNECTORS
PRESS
DOWN
IONIZER
WIRE
1 TWO EYELETS HOLD IONIZER WIRE TO CELL.
Fig. 15. Install new ionizer wire by hooking eyelets over
spring connectors.
Fig. 16. Use an ohmmeter to check the cells for short
circuits.
IONIZER
EYELETS
WIRE
1
NEEDLENOSE
PLIERS
M1540B
COLLECTOR
TERMINAL
IONIZER
TERMINAL
COLLECTOR
TERMINAL
M6155
F57A,B FLUSH-MOUNT COMMERCIAL ELECTRONIC AIR CLEANER
Modification to Reduce Ozone Odor
The electronic air cleaner generates a trace 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.
However, normal use and the first wash quickly dull the
edges.
The average person can detect the odor of ozone indoors 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 ranges from 0.020 ppm to 0.040 ppm
and even higher.
However, if desired, the ozone generated by the air cleaner
can be reduced in one of two ways:
1. Install the optional activated carbon filter.
2. Open the grille and move the electronic air cleaner
performance switch to the low setting. Close and
relatch the grille. The cleaning efficiency is now
reduced 5 to 15 percent, depending on airflow.
NOTE: Be sure the switch is set to either high or low
position, not between or the unit may not
run. Be careful not to reset the switch when
closing the cover.
ELECTRICAL
TROUBLESHOOTING
WARNING
Electrical Shock Hazard
Can cause personal injury or equipment damage.
The following procedures expose hazardous live
parts. Disconnect power supply between checks
and proceed carefully.
CAUTION
The following instructions are for use by only
qualified personnel.
Tools and Equipment
Troubleshooting the electronic air cleaner requires:
• Needlenose pliers for stringing ionizer wires and
inserting edge connectors.
• Test meter with 15 kV dc probe.
Troubleshooting Procedure
The electronic air cleaner Troubleshooting chart, Fig. 17
shows how to quickly isolate a problem in the air cleaner.
See Fig. 18 to 22 for electrical schematics.
15 68-0083—07