[paul alan]

Does anyone know where to get these from?

Purefreedom do a kit at £62 but seems expensive to me, i have the float valve i just need a pressure switch.

Can see them on amazon but not sure if compatible.

Any help appreciated.

[Spruce]

Does anyone know where to get these from?

Purefreedom do a kit at £62 but seems expensive to me, i have the float valve i just need a pressure switch.

Can see them on amazon but not sure if compatible.

Any help appreciated.

You could take the micro switch out and take it to Maplins who will spec it for you.

Here are some details of the switch on this ebay page
http://www.ebay.com/itm/Aquatec-Pressure-Switch-6800-8800-Booster-Pump-PSW-340-PSW-X40-with-3-8-Port-/171650268664

[paul alan]

Does anyone know where to get these from?

Purefreedom do a kit at £62 but seems expensive to me, i have the float valve i just need a pressure switch.

Can see them on amazon but not sure if compatible.

Any help appreciated.

You could take the micro switch out and take it to Maplins who will spec it for you.

the microswitch ? Do these pumps already have auto shut off?
Thanks

[Spruce]

I haven't used one of these pumps so I don't know. I would have thought they would need something like that to control pressure the same as our wfp pumps have.

However, I saw this which appears to be an inline pressure switch.

http://www.chichesterpumps.co.uk/by-manufacturer/aquatec.html

[paul alan]

Spruce your a star! But ibcant seem to work out how many psi the pump is?

All i can see is its 40-80 psi depending, so i may need an 80psi switch.

Emailed purefreedom this a.m but no reply from them.

[paul alan]

I emailed purefreedom asking which pressure switch is compatible and where to get one, they have just replied with"our small ro booster pumps do not have pressure switches"  ......did they even read the question properly......

[Spruce]

They could possibly be correct as they should know their own product better than I do.

I have to believe that the pump would have some safety valve or switch to protect it against over pressure.

If the pump isn't working then you may have to explorer a little deeper to find the solution. For example, what switches the pump off when the water in the tank is full? PF use a float switch which I presume uses a mirco switch and a solenoid valve.
Is the power supply delivering 24 volts to the pump? If you put a multimeter across the wires to the pump which has been disconnected from the power supply, is there circuit?

ps

I found this in the description of the 8800 series booster pumps.

" A 3 chamber diaphragm pump, with 3/8" John Guest ports and a 24VDC motor. It has a bypass set at 110PSI, and a pump body made of nylon.
It delivers around 1.9 LPM open flow, and around 1.1 LPM at about 80PSI.

[Tosh]

Interesting pump on that site.


http://www.chichesterpumps.co.uk/550-series-rv-pump.html


19 litres a minute. Probably pushes out 5 litres, that's some going.

[Don Simon]

I got sick of those pumps packing in, so fitted sureflow , and they are a lot cheaper to buy a new pressure switch/