Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: concept on July 26, 2009, 10:58:17 am
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Right, a lot of you on here will have read and re-read my various trials and tribulations of my merlin system, and TDS issues, but I will add a quick brief to bring you up to speed, just before I sling it out the window and reverse over it a few times...
ok, so, to get you up to speed:
Source: 335
After RO: 79
After DI: 18
So, took advise on here and from a supplier, ordered new filter and membranes for merlin.
Fitted, ran system, resulting in TDS after RO @ 60-65.
Spoke to supplier, who advised me it could be my water pressure, as i was running standard garden hose to garage, then through system.
Moved system to outdoor tap, which runs just under 30psi.
Ran system for hours, and still resulted in TDS after RO @ 60-65.
Ended up taking the system up to Steve CM, who kindly ran the system up to see if it was a pressure issue, it made no difference at his place, still ran @ 65 TDS.
Spoke to supplier again, who advised pressure may be too low, and to run system off washing machine outlet in the house, as the pressure is around 40psi.
They kindly sent me some fixings for the tap, and the original pipework, to give me the best possible chance of building pressure up.
Hooked it all up to the 40psi tap this morning, been running it around half an hour now, and still coming out at TDS of 60+/-.
I really am about to give up here, as this is just getting beyond a joke.
I have been told that 40psi is enough to get the membranes operating effectively, but it appears not.
I have spent a lot of time and money on this system, and can't afford to replace it just yet, however, it appears I am at a loss with it if my water pressure isn't sufficient to get the TDS down.
A question...would a 4040 be ok off a 30psi outdoor tap?
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your going to need a booster pump
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recently bought a booster pump...doesn't work with a Merlin.
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i was told 35 psi was good enough for the merlins , perhaps your membrain aint seated properly and its letting some tap water through .
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i was told 35 psi was good enough for the merlins , perhaps your membrain aint seated properly and its letting some tap water through .
how can i check that?
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look at the price of them!! :o
surely I would be better off selling it and buying a 4040?! or something else.
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http://www.windowcleaningwarehouse.co.uk/shop/index.php/NEW-PRODUCTS/Aquatec-100psi-Pump/Detailed-product-flyer.html
This is a great piece of kit.
Not that expensive.
no doubt wont work with a merlin...so frustrated right now, got jobs to do next week, and no pure water production.
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I got 4040 from purefreedom and my pressure in my old house was 30psi, my tap tds 290, after ro 005, id sell it and if you have enough money get hf5 a 6 month old one recently sold on ebay for £62
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http://cgi.ebay.co.uk/ro-man-reverse-osmosis-300gallen-a-day-filter_W0QQitemZ120451491952QQcmdZViewItemQQptZUK_Pet_Supplies_Fish?hash=item1c0b77e870&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A1%7C72%3A1686%7C293%3A1%7C294%3A50
would something like that be ok?
i need to fill a 650l tank roughly every 2 days.
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merlin pressure needs to be at least 60 psi for approx 20 degrees temp.
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merlin pressure needs to be at least 60 psi for approx 20 degrees temp.
thats done it for me, can't be doin with messing around, pumps that need shutting off every hour etc etc...
just want to produce water, reliably.
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merlin pressure needs to be at least 60 psi for approx 20 degrees temp.
thats done it for me, can't be doin with messing around, pumps that need shutting off every hour etc etc...
just want to produce water, reliably.
this is what you need then 8)
Reverse Osmosis Kit with RO Ultratec HF5-4040 membrane
This kit is identicle to the reverse osmosis kit above but uses the new revolutionary RO UltraTec HF5-4040 membrane instead.
This membrane is ideally suited to applications below 50 psi or where quick filling times are needed.
The HF5-4040 has much greater flow rates at lower pressure without loss of water quality than all other extra low pressure membranes (eg FilmTec XLE-4040, Hydranautics ESPA4-4040, Osmonic Desal AK4040 etc..). In almost all instances this membrane will negate the need for a pump making it an economical choice for any who need good quality water fast no matter what the inlet pressure.
The response from window cleaners up to now has been brilliant - everyone has been amazed at the sheer volume of water produced from a single 4040 membrane.
Price: £524.00 (£602.60 Including VAT at 15%)
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ouch....where's that from mike?
cheers for advice...wish i had gone down this route to begin with!!!
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sorry mate
www.gapswater.co.uk/
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they're on holiday now... :(
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recently bought a booster pump...doesn't work with a Merlin.
why does it not work with the merlin
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can't remember what purefreedom told me...
the lad did loads of research into what else was available, and basically there was only one that was compatible, and it was limited to 1 hours use at any one time... :'(
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is it a 12v pump
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not sure.
why do you ask?
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i cannot see why i would not work
try hooking it up between your water supply and merlin
i think you will be pleasantly surprised
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i did that, its been sent back now...didnt increase production at all.
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i did that, its been sent back now...didnt increase production at all.
cannot understand why that is
but i have used one of these pumps
http://cgi.ebay.co.uk/Propump-12v-80psi-diaphragm-pump-New-Fits-TSR35-ESR18_W0QQitemZ130318118017QQcmdZViewItemQQptZUK_HomeGarden_CLV_Cleaning_CA?hash=item1e5790ac81&_trksid=p4634.c0.m14.l1262&_trkparms=|293:1|294:30
from a very low pressure to boost water up to between 70 to 80 psi no problem
and left it running 24 / 7
and there are forum members who have seen it in action
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mike, put that before ro yeah?
will it raise my 30psi (outdoor) tap pressure to the required levels for the merlin?
if so, i will be buying one!
what power supply does it come with? can you run it off mains?
thats what i had:
http://purefreedom.co.uk/aquatecbooster.html
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concept that pump linked is a battery operated pump. Its 12 V DC. your gonna need a transformer for that.
Its not a heavy duty pump designed to run 24/7
For a merlin you need a heavy duty booster pump run directly from the mains.
such as these..
http://www.ro-man.com/shop/product_info.php/cPath/28/products_id/245?osCsid=82b36b8e3d6cb7fe845c46a28245c037
http://www.wintecs.co.uk/catalog/product_info.php?cPath=58_79&products_id=650&osCsid=6f220e2897bb3be67af4859ad3a8034a
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Right, a lot of you on here will have read and re-read my various trials and tribulations of my merlin system, and TDS issues, but I will add a quick brief to bring you up to speed, just before I sling it out the window and reverse over it a few times...
ok, so, to get you up to speed:
Source: 335
After RO: 79
After DI: 18
So, took advise on here and from a supplier, ordered new filter and membranes for merlin.
Fitted, ran system, resulting in TDS after RO @ 60-65.
Spoke to supplier, who advised me it could be my water pressure, as i was running standard garden hose to garage, then through system.
Moved system to outdoor tap, which runs just under 30psi.
Ran system for hours, and still resulted in TDS after RO @ 60-65.
Ended up taking the system up to Steve CM, who kindly ran the system up to see if it was a pressure issue, it made no difference at his place, still ran @ 65 TDS.
Spoke to supplier again, who advised pressure may be too low, and to run system off washing machine outlet in the house, as the pressure is around 40psi.
They kindly sent me some fixings for the tap, and the original pipework, to give me the best possible chance of building pressure up.
Hooked it all up to the 40psi tap this morning, been running it around half an hour now, and still coming out at TDS of 60+/-.
I really am about to give up here, as this is just getting beyond a joke.
I have been told that 40psi is enough to get the membranes operating effectively, but it appears not.
I have spent a lot of time and money on this system, and can't afford to replace it just yet, however, it appears I am at a loss with it if my water pressure isn't sufficient to get the TDS down.
A question...would a 4040 be ok off a 30psi outdoor tap?
My merlin is running on about 35 - 38 PSI and produces at 025. Source water is about 200 though so that may be making the difference. In fact, before I restricted the waste, I was getting 006 from it. After restricting, it was 016 but has gradually climbed in the past few months.
PS. I restricted the waste as it goes into a ditch and there were complaints (justified) re mosquitoes. It's a good place to have a setup and I wouldn't want to risk annoying the owners.
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concept ive been thru the mill with my psi and merlin... all sorted now.. just got 300l in 1.5 hrs get on to cleanining spot they have just the booster pump you will need for yr merlin trust me i used to get about 25 psi now up to 60psi let us know how you get on
regards ffc
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ffc, you have mail
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just goin to have to bite the bullet and buy a booster, spent too much money on this set up to sell it for a loss now.
i am sure once i get the booster ffc mentions, it will produce lots of pure for me, and be just fine.
fingers crossed...
then in time i can get my 4040, sl pole, fixed hose reel, ibc, transfer pump, new pump and flow controller...lol
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Hi concept, your situation almost mirrors mine. Sorry it may not be what you want to hear but you are wasting your time and money with the merlin, go hf5 as soon as you can even if it means wasted money, you will not regret it and you can concentrate on the job in hand, running your business and cleaning windows and you will soon leave all this grief far behind you. good luck.
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thanks for that cybersye, i am 100% in that mindset, a hf5 as SOON as i can. my main aim is to get this thing sorted, so it will do me a few months, til i can afford the hf5.
also a priority is a carbon pole, to save my body!!!