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Troubleshooting (Qualified Servicer Only)
The following procedures will expose hazardous live parts. Disconnect power before proceeding and between
checks. Failure to do so could result in severe personal injury or death. Exercise the usual precautions when
working with high voltage.
When the circuit has been de-energized, always discharge any residual current in the secondary with an insulated handle
screwdriver. Always ground power supply and ionizing-collecting cell when bench testing.
The EAC6 is equipped with an input LED light (green) and a cell energized LED light (red) for indicating proper unit
operation. When the unit is in normal operation (system fan running, access door in place, control switch in the "ON"
position), and the green light is not lit, there is a problem in the primary circuit. If the red light is not lit, then the problem
is a shorted secondary. Although failure of the indicating lights should not be overlooked, these conditions are unusual
and rather remote. The lights are LED (Light Emitting Diodes) and are very reliable.
WARNING
PERSONAL INJURY HAZARD
RECOMMENDED SERVICE TOOLS
8" Screwdriver with insulated handle.
Phillips #1 and #2 screwdriver
Needle nose pliers.
Fluke #8021B multimeter or equivalent
Fluke #80k-40 high voltage probe or equivalent
LED Readings
BL
W
2
1
4
5
Figure 16
14
1. Safety Interlock Switch
2. ON/OFF Rocker Switch
3. 50 VA Stepdown Transformer
4. High Frequency Power Supply
5. Electronic Air Flow Sensor
6. Ionizing-Collector Cells
7. Contact Board Assembly
3
R
7
7
6
6
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