I do not understand there is no remote high side. I have knowledge on refrigeration but some of this I did not understand. I do for my job is refrigeration. But I do stuff down to -80C or minus 90C. I was just wanting some kind of rule of thumb or auto air. I have found my leak tonight. Need to have the low side hose repaired at a hose shop. I have found the 134A fitting on the suction accumilator. On the compressor I have found nothing but a fitting that looks like a safety disc. It has 1/8 inch mpt on it. but the body of the compressor is alum. I was alittle concerned about putting a brass fitting in to a alum compressor. I was hoping to get a general idea of pressures of a full refrigerant charge at say 80 or 85 outside temperature.

The system will be open for a while so I can get this hose repaired. I thought a tripple evacution would dry out the drier a little better than normal. My pump should pump on a tight normal system of refrigeration down to 150 microns. it will never happen on a auto system but I want to get a dry system the best that I can anyway. I would really apprecite any pressure on high side or low side to start me out. This disc looks like a safety disc. Do you know what pressure it is suppose to blow at.

Thanks
Roy