We have wrecked a compressor for liquid carryover. OEM says separator and suction piping sizing is perfect. Basically says operation or ammonia load was wrong.
Question is : how to check carryover calculation ? I mean checking the separator sizing and/or vapor speed in the suction line.
2nd question is : what is the right protection for the equipment in case OEM is right ? is suction superheat a good protection ? What should be the value ?

This is a York, chiller PAC 128 HR, rotatune compressor with frequency variator, cooling water from 14,5°C to 9°C, 490 MCal/hr capacity.