Pump runs on after tap closed

[acropolis22]

Yes that does help. Pump is different but I have a similar filter. I plan to check all the connections and the filter today.

 

[Captain Yoghurtpot]

No idea but as I said sounds normal. Mine has always done it.

Mine too.
I always thought it was because as I was using water from a closed system, it was refilling any water taken out ready for the next time a tap was turned on or the toilet flushed, ie refilling my boiler within the system and also priming the rest of the systems pipes.

 

[acropolis22]

Mine too.
I always thought it was because as I was using water from a closed system, it was refilling any water taken out ready for the next time a tap was turned on or the toilet flushed, ie refilling my boiler within the system and also priming the rest of the systems pipes.

Well, it's doing that all the time the tap is open surely? The question is how long should it run after the tap is closed to reach the cut off pressure. Mine used to stop pumping almost immediately. Now it runs on for several seconds. TBH, this is probably all a bit of a red herring. Everything works fine, but I'd just like to know why it's changed. Call it curiosity, call it OCD.

 

[Captain Yoghurtpot]

Well, it's doing that all the time the tap is open surely? The question is how long should it run after the tap is closed to reach the cut off pressure. Mine used to stop pumping almost immediately. Now it runs on for several seconds. TBH, this is probably all a bit of a red herring. Everything works fine, but I'd just like to know why it's changed. Call it curiosity, call it OCD.

Our pump runs for about 3 to 5 seconds after taps or toilet flush are stopped, often a bit longer if more water is required to be drawn from the on board tank to replenish the system to a " full" pressurised flow.
I have never worried about it because the water gets hot from the boiler, we get good pressure from all taps in the van, and the shower.
It's not a mains system as at home.
And our van is 23 years old, 2000 vintage.
The onboard Hot Tub takes a bit of filling though!

 

[donkey]

Well, it's doing that all the time the tap is open surely? The question is how long should it run after the tap is closed to reach the cut off pressure. Mine used to stop pumping almost immediately. Now it runs on for several seconds. TBH, this is probably all a bit of a red herring. Everything works fine, but I'd just like to know why it's changed. Call it curiosity, call it OCD.

As I said earlier, these pressure switches require readjustment from time to time, due to pump were, supply voltage etc. Therefore, just loosen the pressure a quarter turn at a time and all be well.

Geoff

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[acropolis22]

As I said earlier, these pressure switches require readjustment from time to time, due to pump were, supply voltage etc. Therefore, just loosen the pressure a quarter turn at a time and all be well.

Geoff

Yeah, just need to dig out one of those screwdrivers with a 90 degree cranked handle.

Can't get to the adjuster any other way.

 

[donkey]

Sometimes easier to remove pump mounting screws to gain access to pressure screw.

Geoff

 

[acropolis22]

Quick update. The pump has now stopped running on as predicted by dunnah01. None of the connections seemed to need tightening, and I didn't adjust the pressure. Seems it just needed time. Thanks for all the suggestions; I now know a lot more about the pump system.

 

[JockandRita]

Quick update. The pump has now stopped running on as predicted by dunnah01. None of the connections seemed to need tightening, and I didn't adjust the pressure. Seems it just needed time. Thanks for all the suggestions; I now know a lot more about the pump system.

Glad to see that you are sorted now.
Two or three of us gave you the same advice, but you weren't convinced, were you?

Cheers,

Jock.