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Dessalator D60 Insufficient Pressure
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Azimuth
Hello Fellow Amelians, We just came back to our boat after some time away and de-pickled the watermaker. After hooking up the new filter, we could not get the pump to engage and assumed we had an air lock. We did a bit of research on this page and tried running it at zero pressure, but the problem is that the water maker automatically turns itself off after 1 minute when the pressure is too low (or too high). Then we tried to kickstart the pump by pumping fresh water through and then switching over to salt. That did get the pump working, but still could not get sufficient pressure to make water. Everytime the watermaker got to the "green zone", it automatically shut itself down. We had to have the pressure turned all the way up just to get it to that point, which is not typical. Any ideas?
Thanks, Lisa & Stephen S/V Azimuth Santorin #143 (1997) |
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Michael Winand
Check that there's no restrictions in the water supply to the pump, from the through hulls to the strainers to the hoses. If you have normal water flows, then you should look at the pump. Check the belt, motor. Then the pump could have a build up of deposits on the valves. Easy enough to check and clean up. Michael Nebo sm251 Hello Fellow Amelians, We just came back to our boat after some time away and de-pickled the watermaker. After hooking up the new filter, we could not get the pump to engage and assumed we had an air lock. We did a bit of research on this page and tried running it at zero pressure, but the problem is that the water maker automatically turns itself off after 1 minute when the pressure is too low (or too high). Then we tried to kickstart the pump by pumping fresh water through and then switching over to salt. That did get the pump working, but still could not get sufficient pressure to make water. Everytime the watermaker got to the "green zone", it automatically shut itself down. We had to have the pressure turned all the way up just to get it to that point, which is not typical. Any ideas? |
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Azimuth
Thanks. Our manual doesn’t have any diagram of what is inside the pump housing. We’ve emailed Dessalator but no response yet. Any idea where to find one? Also, as an update, we’ve got it working for a couple of minutes, definitely making water, then automatically shuts down even though in green zone.
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NEVER turn the pressure completely clockwise. The pressure valve is actually a shut-off valve. When the pressure is all the way clockwise you create enough pressure to cause an explosion. The high-pressure hoses will likely be the first to blow up. Bill
Hello Fellow Amelians, We just came back to our boat after some time away and de-pickled the watermaker. After hooking up the new filter, we could not get the pump to engage and assumed we had an air lock. We did a bit of research on this page and tried running it at zero pressure, but the problem is that the water maker automatically turns itself off after 1 minute when the pressure is too low (or too high). Then we tried to kickstart the pump by pumping fresh water through and then switching over to salt. That did get the pump working, but still could not get sufficient pressure to make water. Everytime the watermaker got to the "green zone", it automatically shut itself down. We had to have the pressure turned all the way up just to get it to that point, which is not typical. Any ideas? |
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Michael Winand
I think it is a 277cat pump. Do you have a boost pump? These pumps like to have a positive pressure on the suction side. How does it shut down, does it have a sensor that is shutting the panel down? Michael Nebo Thanks. Our manual doesn’t have any diagram of what is inside the pump housing. We’ve emailed Dessalator but no response yet. Any idea where to find one? Also, as an update, we’ve got it working for a couple of minutes, definitely making water, then automatically shuts down even though in green zone. |
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Azimuth
We do not have a boost pump. It appears to have a sensor that causes the pump to shut down when pressure is either to low or too high.
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Hi, my lady is hull 185, I had the same last year with a 60, I had to change the sense pressure that you see in the attached. It’s in the back of the desal panel in galley , found asking to Dessalator.
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  Stefano N’EVEREST Super Maramu 185 Italy Il giorno 18 mar 2023, alle ore 13:49, Azimuth via groups.io <lisallt2@...> ha scritto:
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Azimuth
Thank you, we will look into that. We have a call in to Dessalator, but probably won't hear anything until Monday.
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Azimuth
Just wanted to update this post with the solution. After several chats with the Dessalator engineer, it turned out we had a faulty breaker that was randomly shutting off the watermaker. Excellent support from Dessalator. We went through several tests before we found the culprit.
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