On Mon, 2021-06-21 at 17:26 -0400, William Donzelli via cctalk wrote: > > Of course, nowadays, the old R22 systems are being refilled with > > purified propane, called R290. Cheap, with better thermal properties > > than R22, but probably not legal when LCM picked up the 6500. > > When cleaning out a 3rd party CDC dealer quite a few years back, he > remarked that the CDC machines going way back all the way to the 800s > were fantastically unpicky about how they were cooled. He just used a > garden hose connected to the building potable water, and if the > machine under test needed more coolant because it was running warm, it > just pumped more supply. Heated waste water went down the drain. > > This unlike the IBM water machines.
I was once told that the most valuable guy in a Honeywell 6080 Multics shop was the plumber. > > -- > Will
