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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: pete k on March 10, 2011, 10:59:23 am

Title: WFP problems
Post by: pete k on March 10, 2011, 10:59:23 am
hi guys,

i have recently bought a vna with wfp system in, everything is working fine, my tds readings are spot on too but when i clean a window im getting water marks drying onto it, this is happening about 50% of the time. have you guys got any ideas why this is happening? iv gone through and checked the whole system over to make sure its running properly and it seems to be.
thanks guys and girls
Title: Re: WFP problems
Post by: Perfect Windows on March 10, 2011, 11:10:04 am
Quote from: pete k on March 10, 2011, 10:59:23 am
hi guys,

i have recently bought a vna with wfp system in, everything is working fine, my tds readings are spot on too but when i clean a window im getting water marks drying onto it, this is happening about 50% of the time. have you guys got any ideas why this is happening? iv gone through and checked the whole system over to make sure its running properly and it seems to be.
thanks guys and girls

Ok, first thing is to check TDS where it matters.  Take a sample of the stuff coming out of the end of your pole.  Is that TDS 000?  You may already have done this but if not, it's the only place worth checking.  If it's out, you need to work backwards through your system (tank in van, holding tank, output from RO, etc) until you find the source.

If it's not that, then the rule "rinse, rinse and rinse again" might solve it.  Overdo it on a couple of houses and see how they dry.  If they come up fine, it's a technique problem and you just need to work on rinsing far too much at first, then ease off until you can see problems starting again.

Hope this helps.

Vin
Title: Re: WFP problems
Post by: pete k on March 10, 2011, 05:32:30 pm
vin, your spot on, its the rinse, rinse and rinse again that i need to do, tried it today and is now completely fine. am i right in thinking its salt that wont shift too easily? thanks for your help mate

pete
Title: Re: WFP problems
Post by: andyM on March 10, 2011, 06:25:05 pm
Quote from: pete k on March 10, 2011, 05:32:30 pm
vin, your spot on, its the rinse, rinse and rinse again that i need to do, tried it today and is now completely fine. am i right in thinking its salt that wont shift too easily? thanks for your help mate

pete

Are you near the coast?
Title: Re: WFP problems
Post by: pete k on March 16, 2011, 10:35:03 am
no mate, im in bucks.