I have a Copeland model ERF2-0310-CAB that was bought used and working by these mennonite fellows and they wanted me to hook it up to a milk cooler tank and it's being used as a turkey carcass cooler, filled with water. The milk cooler has 2 r12 TXVs on it. The bad news is this ran about 10 seconds with the discharge service valve closed before I realized it and shut it off. This was the first time it ran. In order to facilitate what they are trying to do I have the system filled with MO49 plus.
After opening the discharge valve, It started fine and my suction pressure is running about 45, the water temp in the cooler is about 60 degrees and my high side pressure is running about 110. The unit is drawing about 9 amps, seems like it isn't doing much work, however I shut it down for a different reason. The condenser fan did not come on the way I have the fan cycling control set.
There was some oil on the compressor and after about 10 minutes I guess it started evaporating and was a little smoky. The head on this compressor when I shut if off was smoking a little, and I measured the temperature of the head and it's running about 355 degrees... this seems way too hot.
I did not measure the temp of the discharge line but it's plenty hot, so it seems like it's working, but the high temp of the head and the smoking told me not to let it run unattended for a few hours.
Did I ruin the valves by running it with the discharge service valve closed that short of time?. Will a new valve plate kit fix it?
By the way, these guys were told these two units could work together by a couple bigger refrigeration companies that sold them the units.
Any advice would be helpful. Thanks