Recap: The TCS Y chiller was found to be very low on water on May 21 (alog49382). Since then there was a steady decrease in water, but over the weekend it seemed to have stopped leaking.

Today I turned off the chiller and started looking for any trace of a leak. This chiller has leaked before creating large corroded areas, so it is hard to find any new leaks that may have dried up. I was unable to find any water where it shouldn't be, but I did find some corrosion streaks that I didn't recall being there before. These streaks can be traced back to near the lip of the fill port.

I talked to Betsy and she mentioned that she had noticed the flow going into the filter splashing a bit more than usual when she had checked on the 23rd. She adjusted the wire mesh and the splashing went away. According to the fill log, this was right around the time that we stopped losing around 0.5L/day. Our current theory is that the wire mesh that the incoming water to the reservoir has to pass through, had moved a bit and caused some splashing. We have seen this before, and there is not much we can do to prevent it, other than check on it from time to time. We will keep an eye on it in the coming days to make sure that this is actually the cause. I fired up the chiller again and reset the controller and all seems well.

Side note: I swapped out the water and air filters for TCSY and just the air filter for TCSX because they were gross and probably past due to change. This is reflected in the paper log, as well as here, obviously. (The picture of the water filters has the one I just pulled from TCSY on the left, and the last one that I pulled from a chiller on the right. Seems that the color is a bit less green and more gray now.)