My machine got noisy during operation after swapping out the cartridge and I noticed it happened last time as well and got quieter over time. I assume it's air in the line getting into the machine?
How to avoid it or fix it? I ran a bunch of water and shots but still it sounds quiet cranky at me....
Evan
Noisy VII after changing softener
It depends how you hooked up the feed line & where your shut offs are. I have a drain/bleed line with shut off shortly after the cartridges & another shut off just before the machine. I bleed the cartridges fully through the bleed line & also disconnect/flush the feed line where the stainless line attaches from the machine. That way the only air left is in the short stainless line which passes through the machine quickly.