Full Product Manual

Page 23
J.) RC-50 Control Box Features (Continued)
LCD Contrast Adjust Screen (Continued)
2) Next dial in 035, and wait 2 seconds
3) Next dial in 020, and wait 2 seconds
The display will now look like the picture to the right. The LCD display's
contrast can now be adjusted. Adjustments will make the display easier to read
in different light levels. After nine seconds of inactivity on the control knob the
RC-50 will return to the main screen. After the screen switches back the new
LCD contrast level will be recorded in the control unit and will then always
return to this new level when powering up. Of course, the operator can always
change it again if needed.
K.) Troubleshooting
Cloudy Water or Algae Present
If algae is present, you must take steps to solve the reason it formed. First, brush the algae then add chlorine to
the pool to oxidize. Check filtering system and backwash or clean filter. Check water chemistry – especially
pH. Make sure ion level is in range. You may need to oxidize more frequently if problems persist.
If cloudy water is a problem, add chlorine to clear it up. Again, make sure all readings are in the proper range
and filter is clean. Usually cloudy water is from a poor filtering system. Make sure you oxidize on a timely
basis. Never add granular chlorine without dissolving it first or pouring it directly into the skimmer.
Can't Obtain the Proper Copper-Ion Level
If you are unable to obtain the proper ion level, check all of the following factors to solve the problem:
1.) High algae growth and cloudy water / Ion level too low. A high algae growth or cloudy water will use
up all available copper and silver ions in the water that the unit can produce. This would result in a low ion
level. Make sure the pool water is balanced (see the rest of this section) and turn up the control knob to a higher
reading. Oxidize the water with chlorine.
2.) Correct sizing of the pool. If the pool is larger than 50,000 gallons, you may need a stronger system.
3.) Scaled, dirty or worn electrodes / check electrode scroll comes on. A blue-greenish coating around the
electrodes is normal. However, a build up of scale, dirt or debris around the electrodes can prevent the unit
from producing ions. Simply unscrew the electrodes and clean the buildup using an old toothbrush and use a
lemon juice or muriatic acid/water solution. See details in section H, page 18.
4.) Can't get a high reading on the display/ TDS is too low. If your pool has brand new water in it, and you
are unable to obtain a desirable reading on the control unit, chances are the TDS level is too low. See detailed
section on page 13, and pages 22-23 under “Improper installation” and “TDS too low”.