How do I Troubleshoot a Pentair 320 Chlorinator?

Written by justin a. mann
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How do I Troubleshoot a Pentair 320 Chlorinator?
Keep your Pentair chlorinator in top working condition to provide a properly sanitised pool. (eau de piscine 2 image by Nathalie P from Fotolia.com)

The Pentair 320 model chlorinator is an in-line chlorinator used to inject chlorine into the water of a swimming pool. Chlorine tablets are placed directly into the chlorinator and dissolved by pool water, which carries the chlorine to the rest of the pool. Chlorinators require regular maintenance and troubleshooting in order to operate at full capacity. To troubleshoot the Pentair 320 chlorinator, the screen at the bottom of the device is cleaned, the check valve is examined for proper flow and the body is bled of air.

Skill level:
Easy

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Things you need

  • Tongs
  • Water hose

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Instructions

  1. 1

    Remove the Pentair 320 chlorinator's lid. Grab any tablets still in the chlorinator with tongs and remove them. Reach your hand down into the chlorinator body or use tongs to retrieve the black screen resting at the bottom of the chlorinator.

  2. 2

    Wash the screen with water to rinse off any debris caught in the screen. To reinstall, apply downward pressure on the screen as it sits inside the chlorinator, until you hear it snap into place.

  3. 3

    Unscrew the small check valve assembly connected to the base of the chlorinator body. Pull the black hose off of the check valve assembly to free it completely. Shake the valve assembly and listen for a clicking noise. A clicking noise at every shake indicates the valve is clean and water is able to flow through it freely. No noise indicates the valve is either clogged or broken and should be replaced or sprayed with a water hose to dislodge any debris stuck in the valve. Reconnect the hose to the valve and screw the valve back into the chlorinator.

  4. 4

    Remove the Pentair 320 chlorinator's lid. Turn the pool system on so that water begins to fill the chlorinator body. When water begins to flow over the top of the chlorinator, screw the lid back onto the chlorinator. This purges air from the chlorinator lines and eliminates the risk of the system becoming vapour-locked.

Tips and warnings

  • Perform routine maintenance and troubleshooting monthly.
  • Wear gloves if you have to remove the chlorine tablets from the chlorinator by hand.

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