I have a 90w CO2 tube where my chiller randomly sounded a low flow error when starting
So I need to clean the system. I’ve used RV antifreeze for years and don’t change it often. I removed the coolant and the inside had a film on it, possibly with buildup in the chiller. So I wanted to find something to clean it that wasn’t harsh, minimal chemicals, good on glass and doesn’t foam up. I decided to try one of those pods (cut the stuff out of the pod) you put in a dishwasher in a gallon of water. I ran it thru for over a half hour and it appeared to take any residue off the glass. I was also seeing a white wispy material in the coolant stream on inside corners that eventually went away.
You could take the opportunity, while you are cleaning, to replace your silicone hoses with new ones. It doesn’t cost much and has a relatively large (safety?) effect. Regarding chemicals, you can use anything - as long as it doesn’t damage your seals/hoses in the machine. When you have found something that can take the biofilm, lime or whatever it may be on the inside of your tube and cooling machine, you can let it circulate for 4-6 hours. Then it should be rinsed thoroughly, preferably with demineralized or distilled water. Finally, fill the distilled/demineralized water again with 2 drops of dishwashing liquid. If you have problems with possible frost in your workshop, you should use suitable antifreeze.
If you keep your water hoses and tube in dark, closed environments, no deposits will occur in the tube/cooler.
You can see this by the different colors your hoses have, depending on how much UV light they have been exposed to for a long time.
Of course, there must be no deposition, coating, discolouration in a CO2 tube, this affects the laser’s effect.