Hi to all, need some advise to help solve my problem.
Before my last change of resin for my DI unit, water reading from outlet can go to as low as 0 ppm.
But now, even i changed 2 supply source for my DI resin, my water reading for outlet is always same as incoming. it is like no filter at all.
Anyone encounter this problem with crystal pro 3 stage unit before?
Asume the resin have no issue, what can cause this problem?