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Old 24-08-2014, 20:04   #1
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Join Date: Dec 2009
Location: Philippines
Boat: Norman Cross 46
Posts: 181
Echotec watermaker inability to build up pressure

I am in the Philippines now, ready to go in a rally to Indonesia in one week from now ... I am checking all systems before the departure and I just got a problem with my 260 DML-1 watermaker

I ran it last week for 3 hours ... no problem (after I changed the pump oil and cleaned it well). Pressure ran 900 and water quality was good.
Today I ran it fine for about 1 hour when I suddenly saw the pressure be at only 200. No turning of the handle made any difference.

I tried using the alternate pickup in a bucket in case there was a problem with the sea water intake but that made no difference ... I tried running fresh water pressure as intake (like to flush the system) ... but that does not bring the pressure over 150-200 ...

In the manual it says that "discharge valve chamber may have air trapped within it " and " to allow more time to prime and ensure that there are no air suction leaks". How do one does that???

Anyone has any idea of what to do ??? (yes, I just emailed Echotec themselves also ... but some cruiser might have some great ideas also ... more brains .. more solutions
"Condemnation without investigation is the height of ignorance" Albert Einstein
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Old 25-08-2014, 01:24   #2
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Location: Full time cruising. Currently in the Med.
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Re: Echotec watermaker inability to build up pressure

Sorry to hear about your problem.

I did have a very similar problem on a watermaker many years ago and the overwhelming diagnosis with a sudden failure like this was a failed membrane rather than any problem with HP pump.

I replaced the whole watermaker rather than the membrane so I don't know if the diagnosis was correct.

I am sure someone like Tellie with real knowledge about these things will be along shortly to give a better answer.
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