Water pump problem (1 Viewer)

[CRD]

We are experiencing yet another problem with our new Adria Matrix 670, unfortunately.

This time, it is an issue with the diaphragm water pump. When using a tap, the flow of water continuously pulses as the pump turns on for about two seconds and then switches off again for another two seconds. We can hear a switch clicking during each pulse.

I have spoken to our dealer who thinks it’s a faulty pressure sensor, and they want the van back to investigate and fix (along with a growing list of other issues), however we are currently in Europe for another 5 weeks and the flow pulsing is getting worse.

I’m concerned that the pump might fail so has anybody experienced this issue, or have you got any ideas how/if this can fixed whilst we are in Europe?

Any thoughts and suggestions much appreciated.

Thanks

 

[poppycamper]

Is it fitted with a pressure dampening chamber... if not IMO it should be...
If it is it may need recharged with air..

 

[Jev88]

Top centre screw adjusts sensor sensitivity I am told. Expansion vessel straight after the pump helps smooth flow and reduces noise too.

https://www.amazon.co.uk/Seaflo-SEAFLO-Pre-Pressurized-Accumulator-Tank/dp/B01MVA6GCC/?tag=mhf04-21

 

[Diabalo]

This will stop the pulsing.

https://www.leisureshopdirect.com/water/caravan-water-pump/fiamma-pumps/fiamma-expansion-tank

 

[CRD]

Is it fitted with a pressure dampening chamber... if not IMO it should be...
If it is it may need recharged with air..

This will stop the pulsing.

https://www.leisureshopdirect.com/water/caravan-water-pump/fiamma-pumps/fiamma-expansion-tank

Unless that yellow coloured chamber in the photo is a dampening chamber, I don’t think there is one.

It seems odd that Adria hasn’t fitted one as standard.

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[CRD]

Top centre screw adjusts sensor sensitivity I am told. Expansion vessel straight after the pump helps smooth flow and reduces noise too.

https://www.amazon.co.uk/Seaflo-SEAFLO-Pre-Pressurized-Accumulator-Tank/dp/B01MVA6GCC/?tag=mhf04-21

I’ve tried adjusting that screw, but not by much. It’s not making much difference. I’ll try turning it down (to the left) more.

Thanks for the suggestion.

 

[DerryW]

The yellow chamber is the actual water pump. the expansion vessel (white bottle shaped) should be fitted adjacent to the pump. see attached image of our previous 670 SL.