Water pump surging, is it normal?

[Adam G]

Hi all. When on tank water and you turn a tap on very low, is it normal for the water pump to cycle on and off rapidly? By rapid I mean 2-3 on-off cycles per second.

 

[Brad]

You will hear the pump if you have any taps on.
But you should hear nothing if all taps are fully off.

 

[chartrock]

@Adam G, yes, we have a filter tap which only allows a small amount of water through and the pump cycles on and off all the time it is on. Also the tap on the sink in the shower/toilet is a low flow type and the pump does the same thing there.

 

[Adam G]

Im still not convinced it's normal, the pump cycles on and off very rapidly at a rate of about 5 hertz. I'll take a video and post it up next time I get the van out of storage.

 

[BUSH PALACE]

sounds to me that you are sucking in air from one of the fittings causing it to cavitate ..

 

[shiraz]

Hi all. When on tank water and you turn a tap on very low, is it normal for the water pump to cycle on and off rapidly? By rapid I mean 2-3 on-off cycles per second.

We had this problem early hrs of yhe morning pump would run for a couple of seconds,problem was the tap on drawbar just a drip every couple of mins pressure dropped over a few hrs, pump activated a few seconds , the other is the shower not quite sealing grit from the water
these are our common areas. hope it help.
regards Shiraz.

 

[Ch00ka77]

Im still not convinced it's normal, the pump cycles on and off very rapidly at a rate of about 5 hertz. I'll take a video and post it up next time I get the van out of storage.[/

Adam have you tried priming the hand pump to see if its not sucking air through this as ours was doing a similar thing when we first got it.

 

[Stone Stomper]

It could be some debris in the diagram of the pump, I have just installed one in the car and had to drill an extra hole in the tank for a breather and as soon as I did this and ran the pump it surge every few seconds.

On YouTube found a site on how to pull the pump apart and it was a small piece of swarf that stopped the diagram sealing.

Hope this helps.

Christian

 

[Adam G]

For clarification it is not surging every few seconds, it is surging multiple times per second, it is very rapid, too fast to count.

 

[macca]

Maybe a faulty non return valve or lack of one.