B.
TROUBLE SHOOTING ELECTRONIC AIR CLEANERS
CAUTION:
During repair procedures dangerous line voltage circuits are
exposed; use care to avoid the hazard of electrical shock or possible damage
to the unit.
The following examples are used to aid the serviceman in trouble shooting any malfunction in the
Electronic Air Cleaner quickly and properly.
TEST EQUIPMENT NEEDED
1.
Multimeter with 15 KVDC Probe and 5 KVAC Scale.
2.
Neon Test Lamp for Line Voltage.
3.
Long, Insulated Screwdriver.
Refer to electrical schematics for LA-1400S and 2000S.
Measure appropriate voltage at the indicated number of test points.
INDICATOR LIGHT DOES NOT WORK
1.
Check fuse.
2.
Plug power supply into the proper receptacle.
3.
Measure line voltage at power source (120V depending on unit).
4.
Replace light.
COLLECTOR CELL MALFUNCTION
1.
2.
3.
Remove electronic cell and inspect for bent collector plates. Make sure cell is
thoroughly clean and
dry.
Return electronic cell to air cleaner cabinet. Do not install prefilter screen at
this time.
Turn air cleaner on and use a long, insulated screw driver to generate an arc
between the collector cell
plates; or, use the high voltage DC probe, measure
4,800 at the collector plates.
FAN MOTOR DOES NOT RUN
1.
Check power source and fuse.
2.
Measure line voltage at two speed switch.
3.
Measure line voltage at fan motor.
4.
Replace fan motor.
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