Gergorio, Rodney, Michael R

Today we moved the H2 spare chiller over to the H1 chiller room. We ran both upper and lower units in a closed loop with water filters for about an hour and a half to clean out any gunk that has been sitting inside. The diode chiller tank did have some algae in it but it looks like the filter took it out (see attached photo). We removed the broken chiller from the water lines and hooked up the spare chiller which ran with no problems. No leaks observed, so we went ahead and turned the laser back on. No problems getting it back on, but we still need to increase the diode current to get back some laser power.

We also unsuccessfully tried to fix the chiller by bleeding the pump per the manufacturers advice, but it had no effect. It may be a damaged flow sensor or clogged pipe.