OPERATING HINTS
22
F. REGULAR MAINTENANCE CHECKS
You should always test the chlorine levels of your pool before each use.
Daily:
• Test the free chlorine.
• Test the total alkalinity. Adjust if necessary.
• Test the pH of the water. Adjust if necessary.
Weekly:
• Check the pressure gauge on the pool filter to see if backwashing is necessary.
Monthly:
• Test the salt concentration of the pool (see Salt:When And How To Add It).
• Test the chlorine stabilizer reading. Adjust if necessary.
• Test the calcium hardness
• Remove any debris that may have passed through the filter and lodged in the electrode.
Take care not to scratch or bend the electrode (see DuoClear Maintenance).
NOTE: Maintaining constantly high levels of salt and chlorine above recommended range can
contribute to corrosion of the pool equipment. These levels can be reduced by diluting the pool
water with fresh water.
Do not add pool chemicals directly to the skimmer. This may damage the electrode.
G. SPRING START-UP
The output of the electrode is determined by water temperature, salt level and mains voltage. In
the springtime when the water temperature of the pool is below 18°C (65°F) there may be a
reduction in conductivity of the pool water which can cause the Add Salt light to light up and
you will not be able to set the output to maximum. There is no need to add salt if the level is
already at 4000 ppm. When the water is below 18°C (65°F), there is very little algae growth and
it is too cold for swimming so the chlorine does not get used up as much as it would during
normal operating conditions. If this is the case, you can leave the DuoClear at a lower output
setting until the temperature warms up.
WARNING: Never allow the concentration of free chlorine to go below 0.6 ppm. If this is not
possible with the DuoClear system, use a manual application of liquid chlorine (sodium
hypochlorite).