Watermakers

ccscott49

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I'm in the market for a watermaker, I have a pur 80E onboard, which is just not enough output, although it's a fine unit.
I want a 70-80 litre/hr unit, preferably modular, with auto fresh wash. I've been looking at a few, but would like advice, prefer 24volt and of course a reasonable price. I could also buy in the states and have a mate (Hoo), bring it back to UK for me on his boat. So any help is appreciated.
Colin. /forums/images/graemlins/grin.gif
 
A

Anonymous

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As we have discussed before, we have a Spectra (US made). 24V is available. The principal feature of a Spectra is very high conversion efficiency - our model is rated to give 60 litres per hour with a current of about 20A at 12V. We actually get closer to 40 but the membrane is pretty old. Do compare efficiencies - we can make all our water from solar.
 

Stingo

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How much of a rush are you in?

My new boat is being launch mid-May and I've put in a 220v watermaker that runs off the engine in the same way that an alternator does. There is a magnetic clutch - same as a car air-conditioner switch which drives a twin-belt thingie to the watermaker pump. The theory is that at 1800 rpm (cruising revs) I should be producing 80 litres per hour.

Will be testing it in late May so will be in a position to donate an opinion on smart/dumb purchase then.
 

Tradewinds

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I had a Village Marine Tec Little Wonder 12v unit that worked on a daily basis when on my travels & I was very pleased with it. Circa the mid 90s VMT had a very good reputation among the American cruisers - don't know if this is still the case.

They do modular versions 12/24vdc as well as AC. The LWM400 is a 24vdc modular unit producing 62 litres per hour for 13amps. It doesn't have auto fresh water flush though.

More details here
 

ean_p

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Hi Colin
I've details of a DIY unit with list of parts suppliers that I could send you in three weeks or so if interested. can't just yet as in Azerbaijan and out of reach of my saved e-mails......let me know if you want a copy though you may have one as I received it from a fellow forumite some months ago......the name slips me just now!. The unit is very modular and seems high spec and simple enough to assemble ....

regards

Ian P
 

ccscott49

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THanks all, will get more info, I do like the spectra system, which is very good, although very expensive, I'll await more details, thanks all so far.
 

KellysEye

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Take care that the watermaker you buy is made from off the shelf components. Some manufacturers (Spectra was one and may still be) use non-standard parts and you are locked into their spares, their inflated prices and their limited distribution.
 

ccscott49

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I am a mechanicle engineer, with many years of filed work behind me, not many things daunt me. A simple pump, valves, filters, pressure vessels and thru hulls certainly not! So I would be interested in building my own, as long as I can get the parts needed easily enough I'll DIY it! It would have been much easier in UK, as I know where to get manifolds, pipewrok, piping etc, made and supplied. Si maybe it would be the cheapest and easiest way to go.

Sorry a bit pissed so excuse spelling!!
 

cliff

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[ QUOTE ]
[ QUOTE ]
I have a copy HERE. It's a 2.3 Mb Word file so may take a while to download.

[/ QUOTE ]

5 seconds !

[/ QUOTE ]Jeez - that was slow! /forums/images/graemlins/grin.gif
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"Artificial intelligence is no match for natural stupidity"
sailroom <span style="color:red">The place to auction your previously loved boatie bits</span>
 

Allan

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I've worked with all the parts mentioned and they are all quite robust. The CAT pumps are also easy to rebuild if required, they sell kits of all the parts needed. A customer has just bought a pump direct from CAT for about £450. I've used membrane tubes from KOCH (not the SW units) and they are robust but need to be looked after if not being used. Although I like the simple, manual, design it would not be too difficult to automate some of the proccesses, like the rinsing.
Allan
PS please excuse the spelling, I am sober!
 
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