whale pump pulsing

Jaffa571 · Oct 2, 2016

Hello all I'm very new to this world and just got back from our first weekend away in our new to us caravan its and old coachman Genesis and we love it. However ! The whale water pump a has started pulsing when the taps are not on I've adjust the pressure but when I stop it pulsing it brings the pump on all the time it seems as if the pumps getting a live feed from somewhere. It's an old van I'm new to this game I'm hooked but need assistance please

WoodlandsCamper · Oct 2, 2016

Try turning the pressure adjusting knob in the other direction.

Jaffa571 · Oct 2, 2016

I have tired everything woodlands camper I've had the adjustment screw all the way out and it stops the pulsing but brings the pump on all time I've tired if the other way and no change. Thanks for reply I've tried both ways but no difference

Jaffa571 · Oct 2, 2016

Are you any where Harrogate !!

Sproket · Oct 2, 2016

Maybe this will be of help

Parksy · Oct 2, 2016

Hi Jaffa, welcome to the forum

Your system might be sucking in air.
Check the water pipes and the inlet hose to ensure that they are watertight and that the inlet is fully immersed in water.

Jaffa571 · Oct 2, 2016

Thanks parksy the pump is fully submersed do t think there are any leaks. Sprocket nothing there pal to help

Gagakev · Oct 2, 2016

Could check voltage at battery

Pump running continuously, even with tap closed. If
undiscovered, could result in pump failure and flat
battery. Most likely causes are that present voltage
is significantly lower when last adjusted, or water
container is empty.
CURE: Re-adjust switch or refill container

ProfJohnL · Oct 2, 2016

There is a another strong possibility that no one has mentioned yet. We have established the pump is controlled by a pressure switch, which will activate the pump if the pressure in the pipework drops too low. As you describe the action of the pump as pulsing, its more than likely there is a leak somewhere. However it may not be a leak you can see.

Built into the pressure switch, is a non return valve. If the valve is not closing properly, then the pressure in the pipes can leak back past the NRV into the water container. No obvious sign of this type of leak as all the water stays in the pipes or water container, but the switch will detect the drop in pressure which activates the pumps, which builds the pressure and trips the pressure switch, and so on.

The solution is to carefully disassemble the pressure switch and NRV, clean it. look for any obvious damage. I can't recall if the NRV seals are available separately, but an email to Whale or call the local stockist should tell you. either repair the existing pressure switch or replace it.

,

Hutch · Oct 2, 2016

Kev, the OP says the pump is pulsing, not continuse, so maybe something different. As the Prof says an NRV or a slight leak.

Jaffa571 · Oct 3, 2016

Thanks everyone for the advice it was I hope a leak on one of the barroom joints ( now replaced ) and a re set of the pump pressure as per sprockets link. Thanks again and I'm sure to be back wanting more advice next time

ProfJohnL · Oct 3, 2016

Its really good to get feedback

Thanks

20170602yuanyuan · Jun 2, 2017

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