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Michael Peterson

  • Posts: 1741
4040 hf
« on: February 08, 2015, 04:11:57 pm »
I was wondering if any of you guys could help me here,

I have so far a 450 gpd system its boosted with a pure freedom booster pump and ran 24/7 I have never flushed it an had the thing four years, it takes water down from around about 300tds to 2 (unbelievable I know but have tried various different meters)
the trouble is I need a new one now as its just too slow, I checked this morning and its doing 1 liter per five mins

so..... I have just bought a 4040 h5 ro system from daqua and was wondering
1 , do I need a booster pump, I have no water pressure measuring device but can fill a liter from the tap in about 4 secs
(please tell me I don't because I really cant afford one now :-0)
2. without the pump im guessing the ro will still be faster than the 450gpd but will the tds be below 10 or am I going to be using loads of resin

thanks very much in advance for your help guys

 
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dd

  • Posts: 2623
Re: 4040 hf
« Reply #1 on: February 08, 2015, 04:53:51 pm »
Did you try changing the membranes on your old system?

I guess the only way to find out how the new RO performs (without being able to measure water pressure ) is to run it for a while and see. A decent water pressure is key to the membranes performing well.

Also I find with new membranes the water quality improves over time, can take a few weeks to get the tds right down though they should perform reasonably well after a good initial flush.
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andyM

  • Posts: 6100
Re: 4040 hf
« Reply #2 on: February 08, 2015, 05:16:23 pm »
You can't really tell what water pressure you have by just looking, you really have to get a pressure gauge on the tap.
I always thought I had quite good pressure on the outside tap until I used a pressure gauge and saw it's only 35 psi.
So I need to use a booster pump with the hf4 membrane i've got.

I believe Spruce runs a HF5 membrane without booster pump and gets a decent output.
Just hook your 4040 up when you get it and see how it performs.
If it's not very good I would recommend the Clarke cbm240e booster pump, not cheap but works well.
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One of the Plebs

Fieldsy

  • Posts: 615
Re: 4040 hf
« Reply #3 on: February 08, 2015, 05:51:45 pm »
I'm running a 4040 without booster pump on 45psi, and getting 90 litres per hour at the moment. Brand new system just installed.
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If Carlsberg made window cleaners....I'd be one of them....lol

Frankybadboy

  • Posts: 9024
Re: 4040 hf
« Reply #4 on: February 08, 2015, 05:56:19 pm »
buy a pressure guage which should be around £10/£15 and get it fitted asap

it give you a better idea whats happpening
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Spruce

  • Posts: 8645
Re: 4040 hf
« Reply #5 on: February 08, 2015, 07:24:47 pm »
AndyM is right. With that HF5 membrane I get just on 2 litres of pure a minute which keeps 3 of us going no problem. We have to fill vans at different times though.

I have a 230v solenoid valve controlled by a Machine Mart float switch. The beauty about that is that we can leave it and forget about it. It automatically ensures that the IBC tank is full. That full IBC tank is a good buffer.
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Success is 1% inspiration, 98% perspiration and 2% attention to detail!

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Michael Peterson

  • Posts: 1741
Re: 4040 hf
« Reply #6 on: February 11, 2015, 05:34:58 am »
i was thinking about getting one of those smart water boxes from gardiners to stop my tank overflowing what do you think, will this work ?
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Paul erithwc

Re: 4040 hf
« Reply #7 on: February 11, 2015, 08:11:27 am »
how much can a 40/40 with booster pump produce in 1 hr  ???

Paul
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