[wayne m]

I need a booster pump as the pressure at the moment isn’t brilliant but haven’t tested it as I have no pressure gauge. Are any of these ideal https://www.machinemart.co.uk/p/051016200/ https://www.machinemart.co.uk/p/051012600/ your thoughts would be helpful?  Cheers

[Richard Groves]

I'd start with one of these and actually find out what you're working with
https://www.screwfix.com/p/monument-tools-mains-water-pressure-test-gauge/82412
What ro do you have ?  I'm presuming it's a 4040 going by what size pumps you're looking at.
You need an in-line pressure gauge really though to adjust your gate valve for waste /  pure ratio to optomise it. Personally I've no experience of the machinmart ones but after some research I spent a little more and went for one of these.
https://www.google.com/aclk?sa=l&ai=DChcSEwib9fLt8vvmAhUHtO0KHSfnCdwYABAQGgJkZw&ae=1&sig=AOD64_3levXjkx-HF8Eb-AlDjidIGCr-FA&ctype=5&q=&ved=2ahUKEwi_nezt8vvmAhXFSBUIHRO8AEgQwg96BAgLEBA&adurl=https://www.thecleaningwarehouse.co.uk/water-genie-4040-booster-pump-5688-p.asp%3Futm_medium%3Dgoogle%26utm_source%3Dppc%26utm_campaign%3Dtcw-shopping%26gclid%3DEAIaIQobChMIm_Xy7fL75gIVB7TtCh0n5wncEAQYAiABEgKMJvD_BwE
Its a rotary vane pump rated for continual use. Boosted my pressure from 30 psi up to 100, but by means of in line pressure gauge I set it to 80 psi via gate valve because that was the sweet spot.  18 months on, I haven't regretted it.

[wayne m]

https://purefreedom.co.uk/wp-content/uploads/2017/11/19396926_1534867886558356_9016792166802664646_n.jpg I have this setup. I’ll go and get one of the pressure gauges and see what it is from the source to the van. Cheers

[wayne m]

Does that pump have an auto cut off when the auto shut off cuts in from filling the van?

[Spruce]

Does that pump have an auto cut off when the auto shut off cuts in from filling the van?

No it doesn't.  But with a bit of ingenuity you could fit one. The only thing is that it needs to be mounted vertically. I wouldn't try tbh. I also don't like their hose connectors.

https://www.machinemart.co.uk/p/clarke-epc800-electronic-water-pump-control-un/

You can find similar items elsewhere.

https://www.clarkeservice.co.uk/manuals/water_pumps/EPC800_rev_2.pdf

[Spruce]

I need a booster pump as the pressure at the moment isn’t brilliant but haven’t tested it as I have no pressure gauge. Are any of these ideal https://www.machinemart.co.uk/p/051016200/ https://www.machinemart.co.uk/p/051012600/ your thoughts would be helpful?  Cheers

Neither of those are suitable.

This is
https://www.machinemart.co.uk/p/cbm240e-1in-multi-stage-230v-booster-pum/

You can find them cheaper from other suppliers. Machine Mart usually have them in stock but you pay for the privilege.

[david mark]

That's the one I use had it 6 years works perfect still

[wayne m]

Thanks for the replies glad I asked on here.

[wayne m]

That's the one I use had it 6 years works perfect still

you have had this one https://www.machinemart.co.uk/p/cbm240e-1in-multi-stage-230v-booster-pum/ for 6 years and cuts of when system for filling van cuts off? Also do you have it running non stop with no down time for cooling off or is it a continuous pump or fills your tank quick enough doesn't need down time? Cheers

[wayne m]

Tested the pressure of the tap and it’s 55psi so ideally needs topping up to 80 doesn’t it?

[Spruce]

Tested the pressure of the tap and it’s 55psi so ideally needs topping up to 80 doesn’t it?

I have a 4040 r/o and our water pressure is 50psi. I opted for an HF5 membrane which has worked well for over 6 years - same membrane. Our tds is below 150ppm and the membrane consistently removed 98% of the dissolved solids in our water for many years. I have never run a booster pump.
Currently we are running at a rejection rate of 97%  and we still get 2lpm of pure and fractionally over 2lpm of waste.

The next thing you need to check is how much water your tap to the r/o is delivering. Ours in 13lpm.

[wayne m]

I’ll check that shortly as going to check the tds reading before the di vessel as not sure when the filters were changed as brought the van as it was and never had to produce my own water until now. My tap TDS is much higher than that also so I’ll check that too. Cheers

[wayne m]

I was going to order some new pre filters and a ro membrane but these readings have confirmed this! My tap TDS is 292, after the pre filters and ro it’s only bringing it down to 92, my waste is roughly 3.75 lpm and good is roughly 1.5 lpm. Waste valve is as closed as can be on my system so assume they come pre set from pure freedom? Sorry to all you lot but this is all new to me even though been window cleaning for 19 years. So if I order a new set of filters and a booster pump would this be sorted and what ro filter is best with those figures a hf4 or hf5? Thanks again

[andyralph]

Hi Wayne I have a booster pump for sale if u  r intrested  it is a Clarke cbm240E 1 inch multi stage cheers andy

[wayne m]

Hi Andy, does this pump cut off automatically  due to the electronic control when the van stops filling? How old is the pump and how much you wanting mate? Also where are you based? Cheers

[andyralph]

Hi Wayne it don’t turn off automatically but I’ve just fitted a float switch fluid level controller I’m my new system and it’s great I want 200 pound and I’m in Redditch thanks andy

[Spruce]

I was going to order some new pre filters and a ro membrane but these readings have confirmed this! My tap TDS is 292, after the pre filters and ro it’s only bringing it down to 92, my waste is roughly 3.75 lpm and good is roughly 1.5 lpm. Waste valve is as closed as can be on my system so assume they come pre set from pure freedom? Sorry to all you lot but this is all new to me even though been window cleaning for 19 years. So if I order a new set of filters and a booster pump would this be sorted and what ro filter is best with those figures a hf4 or hf5? Thanks again

At 92ppm your membrane is shot. Its only removing 69% of the dissolved solids in the water. A supplier once told me that he says the cutoff point is around 94%.

I would order a new Axeon HF5 membrane, new sediment and carbon block filters and a new waste gate valve. But I would order the Gate valve from a local plumbing outlet. PureFreedom drill a hole through the paddle of the valve to ensure that Its impossible to close the waste off totally.
I would just instruct myself to never fully close the gate valve. (I drilled a 1mm hole through mine, but I believe PF drill a bigger hole. The idea is that if the valve is fully closed it will still allow a 3 to 1 waste to pure ratio.)

As far as I'm concerned you need to have a better control of your waste water. I would start at a ratio of 2 to 1 and slowly tweek the gate valve closed to see where your sweet spot is, ie where the membrane is working at its most efficient. This will take time as each adjustment needs time to settle in for you take a new reading. Then mark the gate valve so you know where to set it back to when you open the valve fully to flush the membrane.

[wayne m]

Thanks for your help spruce really appreciate it. I’ll order the new filters  etc tomorrow so hopefully have it sorted by midweek. I did think it was weird I couldn't adjust the waste a little more so will sort that out too.

[wayne m]

Any links to the waste gate valve would be great 👍🏻

[wayne m]

If I am getting a booster pump would the hf5 still be ok or will I need the hf4?