We have a salt pool, with a Dexton electrolyser.
Unfortunately with health issues this year the pool has been neglected and I’ve just noticed that the terminals are badly salted up, externally and inside the glass tube.
I’d be grateful for advice on what I need to do to clean the unit. Thanks.
Would it be ok to leave it like this for another two weeks? We are heading off for the UK tomorrow and I doubt I’ve time to do anything today.
It needs a good soak in an acid, vinegar or dilute hydrochloric. When they build up like that around the plates and connections it can cause a short circuit and prematurely end the control box’s life. Best switch off for now if you haven’t time to clean it. You could rely on galets whilst away and if possible put the cover on the pool to lessen chemical use.
Update on electrolyser does not make a happy picture.
Managed to clean the salt build up easily - just a tooth brush - salt bone dry and came away easily.
Opening up the electrolyser, found that the plates have been eaten away, so the system has not been working for some considerable time.
@Corona please may I ask?
What would have caused the plates to degrade like this?
(My thoughts) putting too much chlorine in the pool to shock it? Or wiring up the electrolyser the wrong way round?
The system has been in place for more than 15 years. Dexton I believe is Cash Piscine’s brand. Will they be able to sell me replacement plates?
(It does explain why we’ve had so much trouble with the pool in recent years.)
Just answered my own question. These salt systems should be replaced every 5-7 years. Maybe OH was told when it was installed. Who knows!
Sorry Sue, just lost the internet connection due to the rain. Yes about 7 ish years normally but if used heavily less. Cash Piscine should have replacement cells otherwise there are aftermarket cells available. Sometimes if the water is aggressive meaning pH a bit low, alkalinity a bit low and hardness also it can accelerate the corrosion. Some manufacturers recommend a higher stabiliser level to reduce potentially the corrosive effect of chlorine. If yours is installed on a bypass, isolating the cell when shocking can be a good idea.
Thank you. I am somewhat embarrassed to be going into Cash Piscine with the plates in that state! 
It’ll give the staff a laugh, have to admit, that is the worst one I have seen 
They were very gracious. New one ordered. 
