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02-06-2014, 10:59 AM #11
Re: Copeland Scroll compressor flooding in sub-zero temperatures
Bartek,
I think you are going to have to give us more information as we are only guessing, trying to read between the lines.
I think you need to give us a sketch of system with all components.
Water temperatures in/out heat exchangers or air on/off.
If you are using water through a heat exchanger then there is possibility of spot freezing, especially if water flow is down & below zero. Normally flows switch or evaporator pressure regulator.
A few other temperature readings along suction line would be helpful to determine flood back is occurring. if superheat immediately out of evaporator is example 5 degC at evaporator outlet,
what is it at compressor? is there anything else in the suction line.
Maybe discharge & sump temps when running"normal" compared to "flood back " condition.