Water pump cuts in and out
Submitted: Friday, Jun 03, 2011 at 17:54
ThreadID:
86737
Views:
9235
Replies:
7
FollowUps:
4
This Thread has been Archived
Tina G
We have a 2008 Jayco Sterling and are having problems with the water pump. It keeps cutting in/on even when we aren't using water. Is there an air lock? How can we fix it?
One friend suggested releasing the water in the HWS with the relief valve and it may release the bubble of air, if that's the cause. Doesn't seem to have helped. Should we turn on all taps (no water, just air) and maybe that would help?
Any other suggestions?
Thanks in anticipation.
Tina
Reply By: Member - Bruce C (NSW) - Friday, Jun 03, 2011 at 18:23
Friday, Jun 03, 2011 at 18:23
Hi Tina,
When pumps cycle like that it usually means you have run out of water or there is air in the line.
If low or no water is not the problem then it will happen if the pin hole to the pressure sensor in the pump is partially blocked, provided it has one.
I would go online and download a copy of the diagram of the pump internals just to see what the internals are like and whether that will provide any clues.
Is it a Shureflow or perhaps a Flojet??
Cheers, Bruce.
| At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.Lifetime Member
My Profile Send Message |
AnswerID:
456287
Reply By: Bushranger1 - Friday, Jun 03, 2011 at 18:53
Friday, Jun 03, 2011 at 18:53
G'day Tina,
On demand pressure pumps have a non return valve in the line before the pump. If this valve is leaking the pump will continiue to cycle even when your not using water. The valve return spring could have rusted away or some dirt could be stuck under the sealing face of the valve. Probably best to replace this valve.
Hope this helps
Cheers
Stu
AnswerID:
456293
Follow Up By: Member-George (WA) - Saturday, Jun 04, 2011 at 12:39
Saturday, Jun 04, 2011 at 12:39
I agree with Stu, I did have that problem recently and it was the non return valve causing it. The valve had a build up calcium on the valve
seat. Once I cleaned it off the problem with the pump cutting in and out was solved. Cheers
FollowupID:
729400
Follow Up By: member - mazcan - Saturday, Jun 04, 2011 at 13:25
Saturday, Jun 04, 2011 at 13:25
hi tina g
i agree with stu and george
thats exactly what i have found
i used one of these for many years for
farm spraying and quiet often didnt have pure clean water
and each time this problem occurred i;d pull it to bits and clean everything out with positive results no more on/off cycling
a leaking connection/pipe will also cause cycling due to constant drop in standby pressure
if using water from travel supplys and out of streams /wells etc it pays to draw the water though an inline filter
i used one of those 12mm that fit into garden retric systems easy to install inline and very easy to undo and clean when ever
can get then at the bunnings stores or any retric supplier
cheers barry
FollowupID:
729405
Reply By: Member - Jim - Friday, Jun 03, 2011 at 19:42
Friday, Jun 03, 2011 at 19:42
Tina,
The other thing that has not been mentioned yet is that there is a slight leak at one of the hose joins after the pump causing the drop in pressure and the cycling of the pump.
The next most worthy thing of doing once these things are sorted is to put a accumulator in after the pump, this holds a volume of water at pressure in the line and prevents the pump from switching on/off when doing things like cleaning your teeth.
Regards,
Jim
AnswerID:
456301
Follow Up By: Tina G - Friday, Jun 03, 2011 at 19:55
Friday, Jun 03, 2011 at 19:55
Thanks fellas, great suggestions up to date which we will
check out tomorrow when its light.
FollowupID:
729323
Follow Up By: Not so grey nomads - Friday, Jun 03, 2011 at 20:26
Friday, Jun 03, 2011 at 20:26
Yes, I would have a look at your joins for a minor leak. If you find one leaking, the hose may not be in place properly (about 27mm), the end may not be a clean cut, or the hose end may be chewed up a bit by being pulled on/ poor fit etc.
FollowupID:
729332
Reply By: Paul and Mel - Friday, Jun 03, 2011 at 20:10
Friday, Jun 03, 2011 at 20:10
the jaycos have a cheapo plastic non return valve in them, i bet thats faulty. ours did the same and it was a leaking NRV.
AnswerID:
456307
Reply By: Member - Old Girl (QLD) - Friday, Jun 03, 2011 at 22:21
Friday, Jun 03, 2011 at 22:21
Great timing Tina, Ill print this off for my Father, he has the same problem only he has a
Roma.
AnswerID:
456323
Reply By: MEMBER - Darian, SA - Saturday, Jun 04, 2011 at 09:39
Saturday, Jun 04, 2011 at 09:39
Agreed that it sounds like a leak - our pump required a tweak soon after our van was delivered though - they are quite sensitive to the line pressure of course, and settings do 'settle in' (oh and correct re air - all lines in the van need to be purged of air). Once you have the unit's technical details, you'll see that the pump has an adjustable pressure switch for the 'turn on' part. Our was turning on for short bursts at times (no taps in use - no leaks apparent) - a tweak of that pressure switch fixed it.
AnswerID:
456336
Reply By: Member - Bruce C (NSW) - Monday, Jun 06, 2011 at 18:55
Monday, Jun 06, 2011 at 18:55
Hi Tina,
I was looking at a website and came across this bit of relevant information.
This is a link to the site where you can buy the same sorts of pumps but also has this valuable information.
If this link does not work merely cut and past it into your browsers address line (URL).
http://www.escapinoutdoors.com.au/pressure-switch-test-ezp-3.html
Cheers, Bruce.
| At home and at ease on a track that I know not and
restless and lost on a track that I know. HL.Lifetime Member
My Profile Send Message |
AnswerID:
456623