The other day I had to look at a 80ton McQuay RPS for a refrigerant leak. Noticed upon shutting down, that the electrical section was sweating. Later in the day I started it back up to checked temps and all, no sweating. So I tell them I need to get back when it's cold.
So I get there this morning. Open up the electrical, full of sweat again. It coming from the seams of the interior paneling. This includes inside the unit, too.
Return is 70 degrees 50%RH. Supply was 60 degrees 72%RH. No heat or cooling running. Fixed 33% OA.
Was thinking the only solution was to seal the panel joints inside the unit and install a electrical cabinet heater (like the air cooled chillers).
Anyone else run into this? I never have and I have work on quite a few RPS's.