We have been running a Haas Gantry Router in our shop for about 3-1/2 years now. It's been a nice machine, but there has been one thing that we had to address. We use Kool Mist 77 and the MISTING PUMP UNIT failed TWICE in the first 18 months use and needed to be replaced. After the second time, we made our own Stainless Steel Misting Pump with a minor design change. Since installing the redesigned stainless pump, we've had no issues.
I was told by Haas that Kool Mist 77 was not the recommended Misting formula, but I really coudn't see spending 3 times as much on their recommended formula. I find it hard to believe that the Kool Mist could be the source of our problem. As mentioned, since redesigned, our pump has had NO ISSUES continuing to use the Kool Mist 77.
Buzzards Bay, MA