Goooogle and download J site links did not load so after spending four hours with IR gun, tablet, calculator, aspirin, and Maalox...
The R factor of the double pane doors is almost identical to the five other sides. So it looks like R-12 is the winner. A 7-1/2 HP 3-phase compressor is not cheap to run 24/7
But I found another culprit. Their auto repair shop across the street is on the same four wire transformer. Their muffler shop wire welder kicks the demand digital meter up 2-full scales and holds it there 5-hours. They are not allowed a second meter and both the store and the shop use 3-phase and C.F.E. does not provide 3-phase transformers. The customers do.
So besides the insulation fix, I am now going to rewire a 6.5 NH Onan genset, then convert it to LPG with remote start/stop stations for the single phase welder. The store has three phase reefers the shop has 3 phase compressors, but relies on a gasoline driven compressor.
Life with Comision Federal de Electricidad, is not easy. Because I use less than 150 kWh every TWO months in my house, CFE has changed meters twice and obviously suspected a meter shunt wire bypass.
What costs perhaps $220.00 monthly in the states, costs more than $1,500 down here. That 30Kw transformer set them back almost six thousand dollars.
Thanks for the suggestions everyone! It turned out to be crucial moral support.
Sure wish I had my old Onan service manuals to do the genset stator re-connect. I'm sure it's presently connected for 65-amp 120vac service.
