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Subject Topic: Water Pump Help Post Reply Post New Topic
PersonPhoenixLager
05/2/2018 at 1:05pm
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Hope someone can shed some light here for me.

I have a 2017 Bailey Pegasus Palermo using the Carver Watermaster Pump.

When I am on EHU the water pump turns itself off when the taps are closed. When running on 12v the pump will not turn off, it continually runs.

What should I be looking for? There are no water leaks, and the pressure switch must be working as the pump shuts off when plugged into the mains.

I know its nothing major, but just a bit annoying having to turn the pump switch off everytime having used the taps!!


PersonRob and Tina
05/2/2018 at 1:15pm
 Location: Royal Forest of Dean
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I think this problems happens when the battery is low.I know you've had the caravan running on mains power but it sounds like the charger isn't working or the battery isn't taking charge properly. Can you check the battery with a multimeter?

Rob


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Personcheckley1973
05/2/2018 at 1:43pm
 Location: Sheffield
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Hello. It’s usual to need to adjust the pressure switch when moving from ehu to battery. It only takes a couple of minutes.


PersonPhoenixLager
05/2/2018 at 1:46pm
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Thanks for your reply Rob.

I have two 110mah batteries connected in parallel because we rally most weekends. Do you think this will be causing the malfunction?

My battery readout on the switch board generally shows 12.8 when fully charged dropping to 11.9 when the pump is running and light, tv etc are on.

Lee


PersonGeoff48
05/2/2018 at 2:19pm
 Location: Bolton
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Have you tried running the pump without the batteries being connected in parallel?


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PersonPhoenixLager
05/2/2018 at 3:59pm
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I am going to try it when I next go to the caravan and will let you know. It has been working fine for 3 months in parallel. Hope I haven't damaged anything if it is that


Personchrisn7
05/2/2018 at 5:11pm
 Location: West Yorkshire
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Find the white pressure switch - it has a wheel on top. When you switch to 12v, turn the wheel down as far as it will go, as in turning off a tap. Now turn the wheel the opposite way until the pump stops running, then a further half turn. You may have to adjust this slightly one way or the other.

This should do while you remain on 12v, but you may have to repeat the process when you switch back to 240v.

The issue is more pronounced if you are off EHU and the battery voltage is lower.


Persontango55
05/2/2018 at 5:23pm
 Location: Lichfield
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Quote: Originally posted by checkley1973 on 05/2/2018
Hello. It’s usual to need to adjust the pressure switch when moving from ehu to battery. It only takes a couple of minutes.


I have had to to do this as well which is quite normal especially if we are on our way to a rally with no electrics and stop overnight at a CL and connect up the mains cable for just one night. When the pump is reliant on just 12 volt power it can create current stability problems which can cause the pump to run so a simple adjustment is all it takes to stabilise it. However, when you connect up to mains electric again it will require a simple reset again which is normal.



PersonPhoenixLager
05/2/2018 at 5:57pm
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Thanks everyone for you input. I'll have a go at the wheel on the switch. Makes sense with the current stability.


Persontango55
05/2/2018 at 9:08pm
 Location: Lichfield
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The following information is just a guideline:
When you turn on the COLD water tap, the pump light illuminates then when turned off it should take around 3-4 seconds for the pump light to extinguish (pump stops delivering). When you turn on the HOT tap it should take a little longer maybe 6-7 seconds because the system takes longer to re-pressurise due to replinishing of the hot water tank. When you turn the dial on top of the pressure switch you need to adjust the COLD water only and watch the pump light, count down the seconds as previous but the shorter time it takes for the cold to switch off the longer it takes the hot so you have to find the right balance as previously stated. I find that if you set the COLD to around 3-4 seconds that's about right as you have no control over the hot, it's just a matter of getting the balance as best as you can.


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PersonPhoenixLager
06/2/2018 at 12:17pm
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Thanks for the information tango55



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