I've posted some photos of the refrigeration system. Refrigerant is cooled by seawater pump on the Kubota. That coil is on the ceiling above the Kubota. Compressor is belt driven.
The filter/drier is at the floor against the wall. Mr Frost suggested that the filter/drier be relocated at a high point in the system.
You can see that the lines are on the wall and above some electrical wiring
and inverter/charger. We have talked about moving the lines or moving the electrical
components away from the wall that are directly above the lines. The lines are not currently insulated.
From what I can ascertain, the insulation on the box is a minimum of 4" thick and sometimes 4.5".
The Kubota is model EA300E.
I spoke with the $100/hr refer man (Mr Frost) tonight at length some more. I wish I could record
our conversations so that I could go back and listen to him explain again.
When He was here the first time, he put temp probes on the high and low lines inside the freezer box, monitoring the temp difference between the two. He was comparing those temperatures to the readings on the gauges at the compressor and made the determination that all the lines should be 1/2" to help achieve the right pressures in the lines.
He also explained that the compressor I'm running was built for a 5:1 compression
ratio, not the 12:1 ratio that the system needs to run it at to get the cooling done. Hence, working them over twice as hard will make them fail sooner. But he said you can carry a back up compressor unit because they are not that expensive ($350)?
He did mention that there are compressors that are 12:1 compression
ratio but it would not fit the form factor that is set up right now on the Kubota.
That's all I can think of right now.