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The Norfolk Broads Forum / Broads Boat Owners Q & A / Domestic water pump issues
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Posted By Discussion Topic: Domestic water pump issues

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ruby
Apr-29-2021 @ 5:24 PM                           Permalink
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Hi all

Having re commissioned our boat a few weeks ago I have noticed that there is a regular blip from the water pump for no apparent reason.

I have checked the accumulator pressure and seems ok at about 40. The pump runs fine when the taps and shower are on but when all is turned off the pump comes on for less than a second every 20 seconds or so . No water comes out of the Taps on these occasions.
  When I leave the boat with the water off and come back an hour or so later  the pump runs for  about 30 seconds before the system is primed.

I assume I have a small leak somewhere but all visible connections and pipework are dry .

Before I start ripping things apart does anyone have any suggestions or ideas that may help .

Many thanks

Graham

aboattime
Apr-29-2021 @ 5:48 PM                           Permalink
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Sounds like the first stages of the pump being on its last legs,i may be wrong,but we had similar trouble with ours that ended up needing to be replaced.

kindest regards

Kevin Cook

Regulo
Apr-29-2021 @ 7:05 PM                           Permalink
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The pump pressure switch is detecting a loss of pressure on the outlet side of the pump. If there's no sign of leaks, the pump is letting water back through itself. Do you have a non-return valve?

Regards, Ray.

This message was edited by Regulo on Apr-29-21 @ 7:08 PM

ADI
Apr-29-2021 @ 7:53 PM                           Permalink
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I had exactly the same problem a few years ago, sure enough after living with it for a few months and having to turn off the water at night I found a small leak on a tap connector, ptfe on the joint and tighten up that was the problem sorted, start looking  Smile

Regards

Adrian  Michelle

Beck  Braydon and Mere.

ruby
Jun-04-2021 @ 11:43 AM                           Permalink
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Thanks everyone, a new pump has solved the issue.

I am relieved I have not had to hunt for a minor weeping in the largely hidden system.  

Only downside is the jabesco 2.9 has been discontinued and replaced with the more expensive 3. £75 against £100.

Graham

Gordon
Jun-04-2021 @ 8:19 PM                           Permalink
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I had a similar experience. It was due to a hairline crack in the pump seal between between two parts of the moulding. A smear of bathroom sealant cured it. I also came across a similar issue but in this case the pump would only prime when the tank was full. Hairline crack in the body, same cure. Possibly frost damage in both cases

Gordon

"There is nothing - absolutely nothing- half so much worth doing as simply messing about in boats" Ratty in Wind in the Willows


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