We have an ammonia plant running a freezer. On startup in the morning it keeps shutting down on high liquid level. After a few attempts we have managed to get it running, then it runs all day with no trouble. We had to shut the surge tank off this morning to get it pumped down enough and now its running. The only thing I can think of is either a check vallve causing the evaporator to fill up and flood or maybe a TX valve.
Any Ideas please???