My Father runs an ammonia refrigerant based plant which produces ICE blocks from last 30 years, I have some questions?

My Father has been successfully running a 5 tonnes ammonia based refrigeration plant which produces ICE blocks of 60kg each and has an overall capacity of around 120 ICE blocks. The cold ammonia refrigerant passes through a coil which is immersed in a large water tank. The refrigerant cools the water which freezes the molds of ICE cans which are immersed in this water tank. I have some questions regarding the compressor and the pressure values of oil and gas. Can anyone help me with it? submitted by /u/High_Voltage_Human [link] [comments]