Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: andyralph on December 28, 2009, 12:01:50 pm
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hi all thinking of buying a merlin ro system that produces 720 gallons a day the cost is 215 pound could anybody tell me what else i would need to set it up as it seems good value and in litres what would that produce as is says 720 gallons a day thanks andy
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They work brilliant if you have good water pressure from the tap,.. 55-60 psi minimum. Any lower and you'll need a booster pump which can be costly for a merlin.
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I have one in the garage and it produces enough to fill and 850 ltr tank in about 4 hours each night.
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do i need a seperate di for the merlin thanks andy
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do i need a seperate di for the merlin thanks andy
Of course. You have to put DI after the Merlin.
regards,
Vadim
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Andy - yes you will need a Di vessel
i fill 400 ltrs in 4 hours - but i do use a booster pump to get 70 PSI water pressure
Darran
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They work brilliant if you have good water pressure from the tap,.. 55-60 psi minimum. Any lower and you'll need a booster pump which can be costly for a merlin.
Not necessarily a booster pump. It depends on requirements. I get about 30 - 35 litres per hour from mine at a TDS of around 015 once it's settled down. Resin polishes it off. The pressure is around 35 - 40 PSI. I'm a sole trader and it meets my needs. I agree that it's far from optimum performance and would be no good for supplying two vans on a regular basis - but I do get by on it.
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i dont know what my psi but in bar its about 6 and if i need a booster pump where is the best place to purchase one from and how much thank andy
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6 bar is approx 85psi which is ideal for ro performance. Are you filling a van or static system with it?
Personally would not use merlin. If van would go for 4040. Static 300gpd ro-man type unit (£200 from soap national). You will likely get away without having to use resin as that high pressure should give very low tds.
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hi use a ststic at moment i fill water butt up because i still use backpack and fill 25 litre tubs up and at night run water in to tank in van got a 300 gpd that i use but it dont seem to produce enough water at times how much would a 4040 cost thanks andy
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I use a 300gpd unit which produces around 700 litres a day and water comes out around 003-004 (200 in). My water pressure is 50-55psi. You should get better performnce as your water pressure is higher, unless membrane or pre-filters need changing.
4040 is around £450 plus I think which is why I like the small ro-man units as they work well and membranes are cheaper.
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I use a 300gpd unit which produces around 700 litres a day and water comes out around 003-004 (200 in). My water pressure is 50-55psi. You should get better performnce as your water pressure is higher, unless membrane or pre-filters need changing.
4040 is around £450 plus I think which is why I like the small ro-man units as they work well and membranes are cheaper.
Ionics are doing a champ housing and a HF5 membrane for £300 plus vat and £15 delivery. No booster pump required, but you would need pre-filters and di. Or have a word with Ste and see if you can purchase his 4040.
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