[suds window service]

had a 200 litre for about a month now when i first got it up and running the readings were 000 but now a month on 007.
flushed the system today but still 007 any ideas. this is my second unit ive had and never had as higher reading as this....tap tds 113 ppm.

[jonisondell]

had a 200 litre ?? gpd? what make?
sounds ok, are you expecting a tds of 0??
ive got a ro-man output from 6/8, your output tds depends on water pressure, temp, and condition of filters.

[suds window service]

what is the highest ppm you can safely clean glass and not leave marks?

[jonisondell]

some people say single figures but this still leaves marks, best to ro into single figures then finish with resin sounds like your trying to get away with using resin?? check it youself clean your windows with your 007 water will leave marks

[suds window service]

the system i have i got off p.f it is an ro and then di then into 1000lt ibc tank

[Ian_Giles]

I've just upgraded to a 4040 RO, it reduces my water sown to 0.007ppm

[sparklebright]

Might be worth checking what the unit puts out before resin, dependent on water pressure it will probably be about 7 ppm. Resin once dirty will start to dump impurities back into the water. Give your resin container a shake if you can to mix it up, but you may have to change your resin.
I always kept my ppm at 000, but I have cleaned windows with water up to 20ppm and had good results.
Depends, if it's very sunny it will leave marks, but if it's cloudy it'll be fine

[Ian_Giles]

I've just upgraded to a 4040 RO, it reduces my water down to 0.007ppm at the mo.

Will use it at that level for the next few days to see what the results are, if necessary I'll get a new DI vessel, though I'll probably link it direct to my van system to polish off the water...a bit tough on Squeaky perhaps (I supply his water) but the cost of upgrading isn't cheap!

Just prior to upgrading, and for a month or two at the very least, there has been loads of algae in the water...lots of little bits"!!!!
When I upgraded I cleaned out the main IBC tank...holy poo! the "Green" was almlost 6 inches deep!!!
To be fair it has made no difference to the window cleaning quality...absolutely none at all!
So it is going to be interesting to see whether or not I wil actually need to add a DI vessel to my kit.

I wonder how much hype is in WFP, and just how pure your water actually really needs to be to clean spot free windows.

I'm making no real comment until I have seen how the work turns out, until I cleaned out the tank the amount of algae had to be seen to be believed, and it made sod all difference to the quality of the windows once cleaned.

So what follows will be intersting..

Ian