I was recently gifted an old water cooler that was taken out of service because it was leaking from the reservoir that the bottle sits in. Right now it is sitting in the back seat of my car. I know the cooling circuit works well. The unit is just the guts and frame with no outer case so I will need to figure something out for an enclosure.
I’m now sifting through my parts bins for controls and other pieces I will need to transform this into a functioning water chiller for my K40 laser. So far I have scrounged up a Watlow temperature controller.
and I think this is a temp sensor? I have to investigate it more.
I’m going to use an external pump in place of the pond pump that sits in the tank and adds heat to the water. I have a nice pump that I can use but I think it may be too much. It is a magnetic drive aquarium pump capable of, I think, 880 gal/hour.
I could make a bypass system that will regulate the flow to the tube and divert the excess back to the tank but I think it may be a waste. I know I have another pump somewhere. I do have an old junk RV that may still have the 12 volt water pump, hmmm.
More Later. . .