Swimming Pools in France

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Hydrochloric acid?

I am trying to find out where I can get a small amount of hydrochloric acid? I need it to clean the probe on my Chemigem automatic chlor/PH  controller. About 1/2 pint would be enough, but I can't remember seeing it anywhere. I doubt that it's worth looking in a pool shop as when I have asked for sulphuric acid before I have been met with blank stares and asked what it's for. Tell them it's to drop the PH and get the answer that it isn't H2SO4 I need but PHminus! Look on the bidon and it's sulphuric acid Woot! [:-))]

I am also trying to find out what size capacitor I need to connect across the output of my pool pump motor contactor to stop the arching when it's operated? It is causing a spike on the power that the pool controller doesn't like.

Any ideas about either please?

John.

Never forget that you are unique, just like everyone else.
http://johnamandiers.wix.com/johns-w-o-w-1
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Re: Hydrochloric acid?

Hi John,  Almost any Brico stocks hydrochloric acid in 1 litre, 5 litre and some 20 litre, also good for pH- really the pool shop staff know very very little about what they are doing, it's why I intervene when someone says "Go to your local pool shop"

Hmm, interesting with your pump not sure on that one.

Passivpool Energy "A++" rated Swimming Pools, the lowest running costs in the Universe.
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Re: Hydrochloric acid?

Ta TP.

The controller also has an electronic timer for the pool pump, which I use because it's so much easier than the elec/mech rubbish available and it keeps time even if there is a power cut. No need to reset anything. That switches a contactor for the pump and after a phone call to Pool Controles in Aussy this morning the techie made the suggestion of the cap across the contactor. I know of an electric motor place in Carcassonne and they will probably know and have one in stock? All I will have to do is work out what to say, 'cause they don't speak English Woot! [:-))]

Such fun Confused [8-)]

John.

Never forget that you are unique, just like everyone else.
http://johnamandiers.wix.com/johns-w-o-w-1
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Re: Hydrochloric acid?

Yes no problem with the idea just wouldn't know where to start capacitor value wise. I don't use the mechanical timers for the reason you state and they breakdown too frequently (they are cheap) I use the electronic ones as they have a battery backup so no re setting even after 8-9 months over winter close down. If only I were nearer, Carcassonne is such a way down.

Passivpool Energy "A++" rated Swimming Pools, the lowest running costs in the Universe.
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Re: Hydrochloric acid?

My winter prep is pretty straight forward. I unplug the controller and cover the solar tubes. I had a cover made for them. The material is the same as the tauntliner trucks use on thesides of the trailers so should last OK. I had them made just outside Stroud in a place I know quite well. The floating security cover is put on and sometimes I put a light weight winter cover on to stop a load of rubbish getting in too, but not always?

The solar controller has the frost setting enabled and if the temp dropps too far it starts the solar and the pool pump for 5 minutes every so often. so far we had 2 weeks of sub zero temps last year and no problems, so the system certainly works. The hot side of the solar has just water, no anti-freeze. As you know TP, with tubes the only fluid in the hot side is in a manifold and not in the tubes, so there isn't very much fluid to protect and what there is is well insulated.

John.

Never forget that you are unique, just like everyone else.
http://johnamandiers.wix.com/johns-w-o-w-1
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Re: Hydrochloric acid?

Jonz:

I am presuming your electronic timer enables (turns on) a simple electro-mechanical relay switch and it is that is causing the contact arcing?

Therefore what you need is what is called "A Snubber": which is a simple capacitor-resistor network.

See here:

http://www.electronics-tutorials.ws/io/io_5.html

Values? No idea without: pump motor size? Motor type? (i.e. single phase induction? Resistive Start-Induction Run? etc).

Basically the Capacitor must resist both the working voltage and the spikes from back-emf thru the switch relay coil.

For cleaning any corroded metal, I always keep a litre of phosphoric acid.




"Yes, but that apart, Mrs Lincoln, did you enjoy the play?"

Gluestick
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Re: Hydrochloric acid?

That's correct GS. It switches a contactor to a 1100w single ø cap start induction motor. I'll pop into an elect motor place in Carcassonne as soon as I get the chance. They seem pretty well switched on (no pun intended???) in there and will probably have one for the job. All I need to do is to sort out some language to use?

The hydrocloric acid is to dip me probe in Woot! [:-))] and I found some in a local brico so no problems there. Could make me eyes water if I drip it in the wrong place Blush [:$]Blink [blink]

John.

Never forget that you are unique, just like everyone else.
http://johnamandiers.wix.com/johns-w-o-w-1
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Smile [:)]

Re: Hydrochloric acid?

 Jonzjob wrote:
That's correct GS. It switches a contactor to a 1100w single ø cap start induction motor. I'll pop into an elect motor place in Carcassonne as soon as I get the chance. They seem pretty well switched on (no pun intended???) in there and will probably have one for the job. All I need to do is to sort out some language to use?

The hydrocloric acid is to dip me probe in Woot! [:-))] and I found some in a local brico so no problems there. Could make me eyes water if I drip it in the wrong place Blush [:$]Blink [blink]


This should serve, Jonz.

http://www.conrad.com/ce/en/product/503139/RC-snubber----Finder----9902023009

Connect the modular Snubber across the contacts which switch the mains load.

If you contact Conrad, France, they will post quickly. I've used them before on a number of occasions when in France.



"Yes, but that apart, Mrs Lincoln, did you enjoy the play?"

Gluestick
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