I've got 2 York YCWS water cooled chillers that we switch over every week.
It seems as though every time we swap chillers, after about 45 min. to an hour, our refrigerant monitor goes off at around 70ppm!
Now for the fun part, just after this happens, the refrigerant level slowly goes back down to normal (around 1 to 5ppm) in about 20 minutes.Then the system maintains like this for a week until it switches chillers again.
This happens no matter which chiller is swiching over to which!
My head pressures are steady around 200psi & low sides are around 62psi.
What could I be missing here?
Thanks for whatever replies I get!