I was called in today to inspect this particular chiller. Trouble happened on Saturday. At approx 9AM the master compressor went into an alarm condition "Suction temp sensor failure". AT this point the compressor should have shut down but did not. It appears by reviewing the Alarm logs that the compressor ran in an unloaded condition for another hour before the operator pulled the disconnect to shut the compressor down. The lag compressor was also running during this time which was keeping the pumps on and the refrigerant pressures in the proper ranges. The alarm logs before shutdown indicate a discharge temp of 260F, a suction temp of 248F, oil sump temp of 166F and oil supply temp of 125F. Was able to determine that the Cutler Hammer soft start is the problem. Entered service test mode and started the oil pump, quickly threw the disconnect while the compressor is still in alarm mode and the compressor started. It was immediately shut down. The Cutler Hammer issue is going to be addressed tomorrow by others. I, however have a couple of concerns with respect to running this compressor after this situation. What type of damage if any may have been caused. I did not hear any unusual noises during the brief period that the compressor ran. I was considering running the compressor and have a vibration specialist check it. Also after reviewing McQuay info I cannot determine what kept the oil pump on. All thoughts will be appreciated.