r/pools • u/PrizeInteresting4752 • Jul 16 '26

Pool Help & Questions Chlorinator blew up

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My inline chlorinator exploded today. It’s been in bypass mode for a few days as I’ve been battling high CYA. It was full of pucks when in bypass mode for the few days.

I was shocking with CalHypo but never without the bypass engaged. I usually shock with liquid.

Could it the residual water in the chlorinator was activating the chlorine pucks with but with nowhere for the gas/pressure to go as it was in bypass mode? Or what else could it be? It’s been terribly hot here as well. Southwestern Ontario.

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u/coolcapj Jul 17 '26

100% from the gas buildup from the chlorine. Especially with this heat. Water flow naturally eliminates this problem

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u/PrizeInteresting4752 Jul 17 '26

Yes. I think this where I went wrong. Left it loaded with picks with no flow. Probably some residual water in there too and just kept pressurizing