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UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: Pure Glass on June 07, 2011, 09:22:28 pm

Title: ppm after flushing
Post by: Pure Glass on June 07, 2011, 09:22:28 pm

Ive got a pure frredom van mount and flush every night for around 10 minutes or so before re-filling.

What sort of ppm reading should i be getting before reconnecting the di/resin??

Currently re-connecting at around 80 ish. My tap water is around 420ppm

Ta, Steve

Title: Re: ppm after flushing
Post by: luther1 on June 07, 2011, 09:43:41 pm

Is your ro a 4040? If so 8-10ppm,unless your van is a mile away from your tap.

Title: Re: ppm after flushing
Post by: richard jagger on June 07, 2011, 09:48:59 pm

Your ro should reduce you tds to 10% OF YOUR TAPS TDS. but AS YOU MEMBRANES BECOME CONTAMINATED THIS WILL RISE,
this WILL NOT RESTORE THE MEMBRANES WITH FLUSHING ONLY.