PART III
IMPORTANT PARTS - POWER SUPPLY AND TRANSFORMER
E-25
Adjust the power supply high voltage output
Electronic cell generates a small amount of ozone, about 0.005 to 0.010 parts per million (ppm). The average person can
detect the odor of ozone in concentrations as low as 0.003 to 0.010 ppm. 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 is sometimes higher than 0.100 ppm. If desired, the ozone generated by the air purifier can
be reduced by cleaning the cell, replacing the carbon filter or adjusting the high voltage power supply to produce a lower high
voltage output. However, the adjustment of the power supply will reduce ozone production but will also reduce air cleaning
efficiency.
The transformer provides power to the power supply. If the transformer has problem, it cannot provide power to the power
supply so the red check and green working light will not illuminate and the CHECK indicator light on the control panel will flash.
In other words, if the power supply check light flashes, the transformer is OK.
Adjust the high voltage output
by rotating the adjustor with
plastic screwdriver.
The transformer is connected between power supply and main circuit board.
The input voltage from main circuit board is 110-120V ac and output voltage to
the power supply is 18V ac.
( - ) Counter clockwise to
decrease high voltage
( + ) Clockwise to
increase high
1. Open the bottom plate.
2. Rotate the bolt on the blue color adjustor with flat screwdriver. To avoid electrical shock, you can unplug the power cord.
3. To decrease the high voltage output to the cell, rotate the bolt in counter clockwise direction. To increase the high voltage
output, rotate it in clock wise direction.
POWER SUPPLY TRANSFORMER
Input:110V ac
Ouput:18V ac
Power supply
Main circuit board
ENGLISH
