Quote Originally Posted by sdumper View Post
Wow I took the temperature on this idea wrong. I had no idea so many folks were still using these.
Please disregard my earlier comments...
I think many early custom models were poorly designed with even poorer customer support. While more work and cost,people are used to(and like) things running automatically.

As most things today,they are a combination of mechanics run by electronics.

I think for cascades that operate colder than -80c, a warm up mode,just to open a bypass solenoid every so often(programmable) to allow the evap to warm to-40c for a few min. as needed to allow any oil there to thaw and return.

also a timer for total system run time,like a hobbs meter.......for feedback for builders.