How to Install an Automatic Pool Chlorinator


Balancing the chemicals in your pool takes time, testing and patience. Many steps must be repeated several times each week to ensure the water's safety and cleanliness. Many people have turned to automatic chlorinators to make pool maintenance easier and quicker. These systems hold chlorine pellets or sticks and meter out a dose of chlorine as the water passes through the system, helping reduce the time you spend adding chlorine to your pool.

Things You'll Need

  • Flat-head screwdriver
  • Hacksaw
  • PVC pipe (if water lines are PVC)
  • PVC glue (if needed)
  • Turn off and unplug all pool equipment, such as the pump, filter and heater.

  • Search for the water line that leaves your last piece of equipment in the filtration system. Usually this is the filter, but if you have a heater, it will be the last piece of equipment before the water re-enters the pool.

  • Remove the water line where it enters the pool. For in-ground pools, your water lines are probably PVC, so remove the line from the pool and use a hacksaw to cut a piece of this pipe away to fit the chlorinator. Above-ground pool water lines are usually flexible plastic hoses, so use a flat-head screwdriver to remove the hose clamp and loosen the hose.

  • Install the water line just removed from the pool into the intake of the chlorinator.

  • Run the hose included with the chlorinator from the outflow of the chlorinator to the return valve on the pool. For in-ground pools with PVC, run a new pipe from the outflow to the pool and secure the ends with PVC glue.

  • Plug the filtration system back in and turn it on. Adjust the dial on the chlorinator to control the amount of chlorine added to the pool over the next few days. After testing the water with a kit, if the chlorine is under 1 part per million, use a higher setting; if over 2 ppm, use a lower setting.

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