Chiller water is getting dirty and brownish color

[Coryhoeppner]

Water can be very problematic to injection molds and machines. I once had the same issues with water at a company that i worked for. This led to an extreme build up of calcium carbonate inside water channels, which pretty much rendered the water channels nearly ineffective. That company I worked for contracted help to remove all blockages and buildup caused by the water. After all were removed and the water was removed from the entire system, we started using 50/50 blend of gylcol and distilled water. Yes, this is a big investment but noticeable difference when your water (cooling) problems are erased. Today there are now many of products that will aid in the removal of this buildup, but many prove to be only somewhat effective. I have a friend that recently experienced this issue on a mold and a sales person from DME just so happened to be there talking about molds. The sales guy showed my friend a product that sounds like it would be perfect for you.

[JayDub]

We also use glycol in our tower water. It solves some water quality problems, but keep in mind it can also be detrimental to heat transfer in the mold.