Question about the liquid level in the chiller evaporator?
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In a York screw chiller, when it stops operating due to an excessive level of Freon in the evaporator, the sight glass shows that the liquid level is full. When the load is low and the unit runs for a long time, the liquid level in the sight glass remains normal and cooling works properly. However, once the load on the unit increases, the liquid level can no longer be seen, and cooling performance deteriorates significantly. I’m wondering what the possible reasons for this situation could be: is it a lack of Freon, a malfunction in the Freon return valve, or something else? I’m really worried. Thank you all! ! !
What model of unit? It’s possible that the liquid level setting is incorrect, the opening degree of the supply valve is not sufficient, and a lack of refrigerant in the system can also cause this issue
The York YS belongs to the full-liquid evaporator type, meaning that there is liquid outside the heat exchange tubes, with water at 5°C or 7°C inside them. You should top up the refrigerant; there must be a proper liquid level as required by the sight glass during operation. Or the flow bypass at the bottom is too small. There are many reasons for the low amount of refrigerant
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