Toggle navigation
Home
Help
Search
Register
Login
1 Hour
1 Day
1 Week
1 Month
Forever
Clean It Up
UK Window Cleaning Forum
Window Cleaning Forum
ro- info
This is an advertisement
Interested In Advertising? | Contact Us Here
Warning!
Welcome to
Clean It Up
; the UK`s largest cleaning forum with over 34,000 members
Please
login
or
register
to post and reply to topics.
Forgot your password? Click here
« previous
next »
Login
Register
Print
Pages: [
1
]
simbo
Cleanitup God
Posts:
609
ro- info
«
on:
October 12, 2006, 09:34:45 pm »
Can somebody please advise o upgrading my 75g per day ro from ro-man. I have spoken to them and been told that i can buy a 100g per day upgrade kit and also add another 100 membrane,giving a 200g per day, but wanted to know if i could add another and make 300.
can i do this, the only thing i think i will also need is another membrane housing for the third membrane but could not find one on their site
its time to expand this wf thing
cheers simbo
Logged
www.saferciggie.co.uk
freshwater
Cleanitup God
Posts:
277
Re: ro- info
«
Reply #1 on:
October 13, 2006, 09:02:02 am »
Simbo,
If you tap water flow and pressure can cope you can add up to 6 membranes.
steve@freshwatersystems.co.uk
Logged
Sunshine Cleaning
Guest
Re: ro- info
«
Reply #2 on:
October 13, 2006, 09:15:37 am »
What pressure do you need to maintain?
Logged
MNWC
Cleanitup God
Posts:
1549
Re: ro- info
«
Reply #3 on:
October 13, 2006, 04:27:43 pm »
Cant you just buy say a 200gal membrane and put it in the original housing
?
Logged
freshwater
Cleanitup God
Posts:
277
Re: ro- info
«
Reply #4 on:
October 13, 2006, 07:13:28 pm »
Bear,
you need a min of 40psi but 60-70psi is better.
Macus,
If you could get a 200GPD membrane then yes, but the biggest 12" membrane is 150GP. You will also need to change the drain restrictor to suit your new membrane.
steve@freshwatersystems.co.uk
Logged
Sunshine Cleaning
Guest
Re: ro- info
«
Reply #5 on:
October 13, 2006, 07:27:39 pm »
I dont understand the drain restrictor bit. I know i have one on a 200gpd unit. If as you suggest to marcus the membrane is replaced with 2 150's what drain restrictor would i need, or, would i do as you suggest in another post and get a needle valve?
Logged
freshwater
Cleanitup God
Posts:
277
Re: ro- info
«
Reply #6 on:
October 13, 2006, 07:33:12 pm »
Yes you can use a needle valve to control the flow to waste.
The general rule of thumb is 10ml per min per gpd of membrane at 70psi. So a 100GPD should run to drains at a rate on a bout 1 litre per min.
With a needle valve you can adjust this up or down. As you reduce the water to drain your production rate goes up, but your TDS also goes up, and contra for if increas the the drain.
steve@freshwatersystems.co.uk
Logged
simbo
Cleanitup God
Posts:
609
Re: ro- info
«
Reply #7 on:
October 13, 2006, 07:48:17 pm »
I am lost now!!
Logged
www.saferciggie.co.uk
freshwater
Cleanitup God
Posts:
277
Re: ro- info
«
Reply #8 on:
October 13, 2006, 11:39:12 pm »
Simbo,
When and if you buy a new membrane, who ever its from, ask for the correct drain restrictor, its as simple as that. If you are buying an add on membrane with a housing again ask for the correct restrictor. If (as it seems) you dont know a lot about ROs then dont bother with needle valves, just stick the easy route.
steve@freshwatersystems.co.uk
Logged
Login
Register
Print
Pages: [
1
]
« previous
next »
Clean It Up
UK Window Cleaning Forum
Window Cleaning Forum
ro- info