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Old 04-06-2016, 07:27 PM   #1
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Watermaker

I need replace my watermaker, any recommendations for brands etc. or what to avoid appreciated.
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Old 04-06-2016, 08:07 PM   #2
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Check last months Passagemaker. There was a good article in there on Watermakers. Let me know if you don't have it.
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Old 04-06-2016, 08:41 PM   #3
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I have a cruise RO water maker on board 40 gallons per hour.

The thing works great, and the really great thing is that all the parts are available anywhere there's nothing proprietors.

When I had a question about the water flush system on it on a Sunday afternoon, I emailed the company. Within a half an hour the owner of the company himself was emailing me back with an answer.
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Old 04-06-2016, 09:03 PM   #4
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I need replace my watermaker, any recommendations for brands etc. or what to avoid appreciated.
I've used most all of the major brands at one time or another and have had good luck with them all. So my adive is no matter brand you choose, keep it simple when it come to the control systems.

The fully automated ones are very nice when the work but a PITA when the don't and they can be expensive to repair.
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Old 04-06-2016, 09:39 PM   #5
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We have had good luck with Sea Recovery units.
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Old 04-06-2016, 10:24 PM   #6
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I'll second Cruise RO. I know the owner, Rich Boren, and he is universally recognized as having the best customer service in the industry, as well as having no proprietary (read super expensive) parts. We have an old Village Marine Little Wonder that came with the boat, but it hasn't been used for more than 6 or 7 years. IF we replace it with a new one we will more than likely go with Cruise RO.
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Old 04-07-2016, 02:43 AM   #7
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We spend our time in an area where two thirds of the boats have water makers and use them all the time.

Two comments: Keep it simple. Most of the problems come from the automated controls for determining salinity and filter replacement.

The other issue is AC vs DC. AC units are great for product output but require the generator to be running. Two problems. Many boats find they are running the generator longer than needed just to run the AC water maker. 12 volt units can run off the batteries with the batteries recharged a couple of hours into the water making process. The second problem is that AC units require a working generator. This means that if your generator goes down your water maker is out of action. With a 12 volt unit you can continue to make water as long as you can charge your batteries. This has been a problem for a couple of friends who were forced to leave anchorages and relocate to somewhere where water was available.

As with anything on a boat there are compromises to be made. If you spend time at anchor in places where you might spend a week or two getting your generator fixed, you may want to consider a 12 volt unit.
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Old 04-07-2016, 02:54 AM   #8
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The other issue is AC vs DC. AC units are great for product output but require the generator to be running. Two problems. Many boats find they are running the generator longer than needed just to run the AC water maker. 12 volt units can run off the batteries with the batteries recharged a couple of hours into the water making process. The second problem is that AC units require a working generator. This means that if your generator goes down your water maker is out of action. With a 12 volt unit you can continue to make water as long as you can charge your batteries. This has been a problem for a couple of friends who were forced to leave anchorages and relocate to somewhere where water was available.
You could run the AC unit off the inverter.
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Old 04-07-2016, 06:02 AM   #9
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Spectra make good units. Auto flush etc is nice to have, particularly if you don't use it all that much.
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Old 04-07-2016, 06:30 AM   #10
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You could run the AC unit off the inverter.
The smallest Cruise RO unit would draw 105 amps 12 volt DC without taking into account the inverter inefficency. About the same as running a 16,000 BTU air conditioning unit. Doable I guess, but I haven't heard of anyone who does it.
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Old 04-07-2016, 06:34 AM   #11
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Spectra make good units. Auto flush etc is nice to have, particularly if you don't use it all that much.
I have a Spectra automated unit. The autoflush, salinity probe and the pressure sensors for the filter replacement all have been a pain over the years. Would recommend the manual unit or buy the automated unit and learn to operate it in manual when one of these items has failed.

Manual units appear to be well liked by the cruising crowd.
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Old 04-07-2016, 09:55 AM   #12
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The smallest Cruise RO unit would draw 105 amps 12 volt DC without taking into account the inverter inefficency. About the same as running a 16,000 BTU air conditioning unit. Doable I guess, but I haven't heard of anyone who does it.
105 amps! Misprint?

Spectra has a DC unit that draws only 9 amps at 12v while making 6+ gal/hr.
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Old 04-07-2016, 10:11 AM   #13
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Having had and used a 7 gph dc watermaker and also a AC watermaker rated at 40 gph...

We found that with our lifestyle, the 12 volt unit had to run ALL day long, and being a single piston pump you could hear it go thump, thump, thump ALL day long.

With the 40 GPH watermaker I can run it between 1 and 2 hours a day while the generator is running, and the noise is more like a hum... than the annoying thump thump, thump sound of the 12v unit.

We use between 50 and 80 gallons of water per day depending on clothes washer use.
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Old 04-07-2016, 10:16 AM   #14
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Having had several different brands, I am convinced Cruise RO is the way to go. It is a well-thought-out but simple system and none of the parts are proprietary. Some major manufacturers go out of their way to necessitate the use of their parts at a HUGE markup.
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Old 04-08-2016, 12:32 AM   #15
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Has anyone installed a US Watermaker model (Dalles, OR)?
Saw them at the Seattle Boat show as a potential option.
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Old 04-08-2016, 04:09 AM   #16
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105 amps! Misprint?

.
I think I used the correct formula for converting AC (110v) amps to DC amps. The smallest Cruise RO unit draws 9.3 AC amps at 110v, plus 8.3 amps DC at 12 volts for the boost pump.


Several cruisers I know make water with the small Spectra unit powered solely by their wind generator.
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Old 04-08-2016, 08:22 AM   #17
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Amongst cruising sailboats, it is not uncommon to find water-makers with the high pressure pump driven mechanically (clutched belt) from the propulsion engine. Similar could be done from the genset on a trawler?
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Old 04-08-2016, 08:33 AM   #18
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If you are running the gen anyway, why belt the pump to it, just use the AC motor.
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Old 04-08-2016, 09:00 AM   #19
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We love our WaterMakers inc, with auto back flush. Love it. Best additions by far to the boat, that and a big water pump.
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Old 04-08-2016, 09:18 AM   #20
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We love our WaterMakers inc, with auto back flush. Love it. Best additions by far to the boat, that and a big water pump.
+1 here. We have a WaterMakers Inc 700GPD unit. Great solid simple unit!
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